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1. continued from page 41 keyed in and retained during saves to enable a best score system to operate for games I have been asked that kind of question a surprising number of times The answer is that so long as you do not use RUN NEW or CLEAR all your variables are retained They are also copied on to cassette during SAVE and copied back into memory during LOAD Deleting lines by entering their line numbers in turn is a nuisance Is there a method for deleting blocks of lines asks Mike Chandler of Glasgow There is because the length in bytes of each line is held in two loca tions immediately following the line number and we can manipulate them to our advantage To see the LAST LINE NOS 9030 INPUT 1 9040 INPUT 2 9050 IF B 1 lt 0 OR B 2 lt OR B 1 gt 9999 OR 2 9999 THEN GOTO 9020 9100 FORI 1 02 9110 LET L PEEK START 2 256 PEEK START 3 9120 LET LINEND 256 PEEK START PEEK START 1 9130 LET START START L 4 9140 IF LINEND lt B I THEN GOTO 9110 9150 LET B 1 START L 4 I 1 9160 NEXT I The routine finishes with the two addresses held in B 1 and B 2 The next trick is to fool the ZX 81 into thinking that all the lines between and including the two line numbers line length clear your ZX 81 by entering NEW and then enter the following line 10 REM Then PEEK at the first few bytes in the program area which starts at 16
2. Proverbs Simies Anagrams ENGLISH 2 laore Opposites 1 Oppente harder Group Tem Od Word Out Spain ARITHMETIC FOR THE UNDER Ads Subvact Multiply Dive lows EDUCATIONAL QUIZ Y programe on Genera Knowledge Reasoning English Sind Mata AN questions use AND 480 per cassette or send sae for gue ic ROSE CASSETTES 148 FROGGER ANOTHER 16 ft 1 Moving Cars Logs Turnes Agate Dui Turies Tivee Screens of Acton Al Arcade Machine Code POP ZUCKMAN FOUR indepedent Ghost 1 Tre Energy Post et High score Hat of Fane Atenti Arcade Acton ONLY E36 ne Send PO or cheque to DJL SOFTWARE 9 Tweed Close Swindon Wits SN2 zXtPhOM ADD EPROM POWER TO YOUR 2x COMPUTERS Eprom Programmer mth ZF ow con m NIC and benc routines to be Stored in Eprom Simple to use and sofware rogram re merry Serm han hee M C Eprom Read Cani Programmer end Rasa connect PP om A and B CI U K 2 overseas IX SPECTRUM Poss snare ORME ELECTRONICS 2 Baripper Camborne Comma BINGO ON 1K 13 line listing calls 1 to 99 random order and displays tabulated check back Cheque or 1 to C Jefferies 280 Whi fields Rd West Midlands 891 ZX 81 IN CUSTOM BUILT CASE 16K RAM Power supply Full size keyboard leads manual 240V outlet ex
3. 1 Br PEINT FOR N 5 BRINT B2 PB ARIS TO Sein NEXT M PRINT TAB 6 5 6 Gosue 490 INPUT ns 102 IF A THEN RUN 105 PRINT AT 12 5 M 110 LEM THEN GOTO 10 115 LET A A i s 128 If ngiss 1 THEN GOTO 310 138 Ler 128 LET M niin 5252 150 FoR N G TO G leS STEP 15 169 IF ASUD 29 TREN NEXT M i76 Ler G 150 FOR ies STEP 15 199 IP AIN THEM NEXT 289 LET Hien LET 29 SF URL Agito VAL Aginers URL THEN 300 36 LET KSUAL ABN 15 URL ASIG gt IF K 2 INT he THEN GOT 300 255 LET R 8 107 260 LET 278 PRINT AT 2 2 850 20 588 IF VAL A iH 15 0 THEN GOTO E 295 isle 322 288 78 188 inm 2 ANE Nr Tore orto 4 a 218 288 Tao ponerse 440 PRINT 2 149 vou SINCLAIRUSER September 1962 29 eturning ermes screen 120 GrePl RT duet SINCLAIRU USER Sey ptember 1962 AMMETER amp VOLTMETER CONVERSION MMETER and Voltmeter Con A version isa program for the1K 81 which calculates the value of a resistor required to convert any meter to a voltmeter or ammeter of known range The program will
4. 35 LET SERIES WITH See coro PRINT 25 PRINT ALL THE TAR ARPSHOOTER 3 _PRINT KEY TO FIRE SS IF INK 35 42 75 es a2 3 LET As PRINT IF D i SHOT IF o e MISSED FOR NEXT J IF D INT IF PRINT OR NEXT m TiZzUnouzo 02279 o TAB 10 RIFLE RANGE BT 5 8 VOU MUST HIT GETS LEARN YOUR SH RATING PRESS THE F AT 18 0 TO START PR S E vs B THEN GOTO 35 n 2 TO 48 1 THEN GOTO 200 6 lt gt THEN LET Dz1 THEN LET AS 16 AT 10 0 n5 THEN PRINT AT THEN PRINT AT 8 TO 29 THEN LET 9 16 EY THEN GOTO 160 PRIMIN ALL GONE PRESS THEN GOTO 0 16 TARGET THEN LET R OH DE IN 35 THEN LET LET R amp aFI SHARP SHOOTE 3 OWNS is one of the best pro have received Itis Bh aid to teaching geography with vivid flashing displays and a neat map The program was sent by Newham of Worcester Park better his ew EBIRMINGHRM SEGURHEHDUTH scnnenipse Surrey and we description SLIUERPOOL 3LONDOR a5neneHESTER STMEUCRSTLE 15HDRUICH ZZZZZZZZZZZ 2222222271111 ABSSSHEFF IE SS OESDUTHARPTOM s5issunmsERn P OQNJQUR Ree the flashing and spelt correctly If two successive incorrect guesses made in either mode the computer gives the correc
5. Prices included VAT Delivery 3 days for in Official orders welcome P P Overseas add 1 80 postage items else allow 28 days Send sae for FREE catalogue 2X81 and SPECTRUM Top Quality Software from CAMPBELL SYSTEMS 2X81 16K GULP The best computer game have ever played it beats many actual arcade games BRILLIANT says John Fox of Osset Yorkshire Endless fun even just in demo mode and huge numbers of variations 4 75 2X81 16K 64K THE FAST ONE the best general purpose business filing system around Includes sorting totalling fully user definable data and reports comes with 11 page manual 15 00 SPECTRUM self relocating machine code Disassembler and Editor shows 280 ops and operands helps you develop your DrlanLogan usesit 5 95 SPECTRUM GULPMAN This is GULP I plus colour and sound and has to be seen and heard to be believed Totally machine coded and with scope to POKE your own joystick control 5 95 programs are supplied double recorded on cassette sped 1st class retum post Prices include VAT Dealer enquiries welcome Sae for full catalogue CAMPBELLSYSTEMS Dept SU 15 Rous Rd Buckhurst Hill Essex IGS 6BL England SINCLAIRUSER September 1982 ROGRA RINTOU will like Flycatcher A bug eating reptile squats at the top of the screen hungry for the flies which buzz past below it Pressing P causes
6. September 1982 The independent magazine for the independent user Getting to grips with Spectrum programs We profile Prestel Eric adaptor Deeson to be of EZUG launched Schools ZX 8l software sails reviewed to the South Spectrum Atlantic anger grows Plus Eight of progra prs helplilteyamindgames MICHAEL ORWIN S ZX81 CASSETTES THE BEST SOFTWARE BY VARIOUS AUTHORS AT LOW PRICES QUOTES Michael Orwin s 5 Cassette Two is very good value Itcontains 10 stolid well designed games which work offer plenty of variety and choice and are fun From the ZX Software review in Your Computer May 82 issue had your Invaders React cassette delighted with this first cassette P Rubython London NW10 I have been intending to write to you for some days to say how much enjoy the games on Cassette One which you supplied me with earlier this month E H London SW4 previously bought your Cassette One and consider it to be good value for money Richard Ross Langley Managing Director Mine of Information Ltd 1 was CASSETTE 2 Ten games in Basic for 16k ZX81 Cassette Two contains Reversi Awari Laser Bases Word Mastermind Rectangles Crash Roulette Pontoon Penny Shoot and Gun Command Cassette Two costs 5 CASSETTE 1 eleven 1k programs machine code React Invaders Phantom aliens Maze of death Planet lander Bouncing letters Bug splat Bas
7. The print position is determined by converting the value of I to a string and then calculating where the decimal point occurs it functions correctly even if I is an integer and hence has no decimal point 10 LET D 20 INPUTI 30 LET I INT 100 1 5 100 40 LET ZS STI 60 IF ZS J D THEN 70 NEXT 80 PRINT AT 21 16 Z 90 SCROLL 100 GOTO 20 Janet Peterson of Grove asks Is it possible for a cassette tape to wear out I am a teacher and my class has used a commercial cass ette of games many times but I am finding it increasingly difficult to load Yes magnetic tape will fail eventually There are several problems First simply reading a cassette degrades the signal stored on it by small amount so if you LOAD from it many times the signal will become weak Second if you leave a cassette untouched the signal from each layer of tape will print through on to the next causing an eventual degradation of the tape Finally if you always stop the cassette at the same place and then re wind it the tape will stretch My advice is always to make a second copy of important cassettes you have a commercial cassette which you cannot copy because you cannot break the program while it is running then exercise the cassette regularly by re winding it completely That will help to avoid print through and stretch Hewson Consultants 1982 Please address problems and que Andrew Hew
8. Z X81 S81C 16K Expandable RAM Uniquely expandable to 32K by the addition of our 16K Expansion Module Basic 16K RAM Pack 8116 16K Expansion Module 8116E Full 32K RAM Pack 8132 15 00 25 00 19 95 39 95 All prices fully inclusive of VAT and P amp P Send now to STONECHIP ELECTRONICS UNIT 4 HOSKINS PLACE WATCHETTS ROAD CAMBERLEY SURREY Tel 0276 681131 Make cheques or P O s payable to STONECHIP LTD PLEASE SEND O S32 B ssu 81 o 8116 8116 O 8132 ALLOW 28 DAYS DELIVERY 2 81 ADVENTURE SPECIALISTS C2 VOLCANIC DUNGEON HANGMAN 4 50 VOLCANIC DUNGEON Rescue if you can the Elfin Princess Mythical monsters pis caverns diminishing strength and water make yout Quest anything but easy FULL 16K PROGRAM SAVE GAME ROUTINE amp SINGLE KEY ENTRY Volcanic Dungeon is terrific value and would recommend it to anyone Mes Thomas Cornwall B HANGMAN Delux version of the classic game Puy or the computer s 400 word vocabulary Good graphics C3 ALIEN INTRUDER MIEROGLYPHICS 5 00 ALIEN INTRUDER You awaken to find you are the only sur Explorer Class 3 Starship Can you escape before you aso the Alen monstrosity that devoured the crew There are many ways to ond this adventure but only one way to survive FULL 16K PROGRAM INTERACTIVE GRAPHICS SAVE GAME ROUTINE B HEIR
9. and carriage by return of post requires 48k Spectrum rees now THE nanowane sornwane PACKAGE THAT LETS YOU LOAD AND SAVE POLL Te IN ORLY AN SECONDS FON LESS THAN Dn SAE TOR DETAIL All prices are inclusive Return of post service 49 Now For the SPECTRUM 48K EDUCATIONAL COMPUTING TORTOISE simplified version of the famous Turtle programme D MISSILE IK PROGRAMMES Combines the fun of arcade PRIMARY games with learning 4 95 only incl p amp p Graph ploter 9 Histogram Smon ipell Times table Sets Series quit XY coordinates Count Equations Areas Guess a Volume Angles Upstars Downstairs note Wipe out Spel 76 mee EDUCARE e eem posta ar Vr 139a Sloane St Name London Egit ie qn qn VA yew eid barots soriy Bend rom Say Make sure you get it each month What is the best way to guarantee that you Can you continue to obtain the most from never become bored with your Sinclair your Sinclair without reading Sinclair User computer every month So why not fill the subscription The answer is to subscribe to Sinclair User order form today Send it to Sinclair User written specifically for owners of ZX 80s ECC Publications 30 31 Islington Green ZX 81s and Spectrums Sinclair User is t
10. or a copy to INTERFACE Dept SC 44 46 Earls Court Road London W8 6EJ Paso stow up t0 28 ds or 22 FROM AFDEC ZX81 RAMPACKS 16K 25 00 Inclusive and post free Well proven design Simplicity itself Just plug in and Power derived from 2 81 without additional connections Ingenious flush mounting design eliminates Wobble and accidental memory loss Special feature LED On Off indicator Coming soon A professional keyboard at an affordable price Send the coupon TODAY for your Rampack Allow 14 21 days for delivery AFDEC ELECTRONICS LTD 318 Kempshott Lane Basingstoke Hants Please supply 16K Rampacks at 25 00 inclusive Cheque P 0 Money Order enclosed Please Print Clearly Name Address ZX sas Serious Application Software for your 16K ZX 81 SPECTRUM Please specify INCOME TAX Checks PAYE coding by offering you all likely allowances displays and prints your coding and its make up then powerful facilities automatically calculate NI and PAYE deductions to five years net pay for next week or month Options for overtime salary increases etc Plan your income for 6 50 BRIDGE Ideal for all bridge players Enter contract bid and made BRIDGE does the rest for you All over trick slam doubled points etc Displays and prints scorecard totals for 5 rubbers and hands played A high class program excellent
11. Argentinian Super which can win by sinking Etendard aircraft is firing the Hermes That needs at Hermes which is firing score of 12 which can be back The aircraft is achieved by receiving Trevor Walhon as he crosses the equator on his wa armed with Exocet mis three for every Exocet hit silesandbombs whichare and two for every bomb missiles which are also fired at random The carrier s other defence for decoying the Exocet continued from page 47 That is controlled by the shown by other members player who must press of the crew and it helped INKEY C as soon as it ease the tension says appears Nowheishome Walhen aircraft The player also is looking forward to a controls the movement of little relaxation and con Hermes by the 5 and 8 its chaff device below the Due to lack of space we have not been able to print our usual list of user groups We apologise for this released at random Hermes is also being omission and will attempt to include it in October Hermes has four Seacat attacked by a submarine 4B SINCLAIRUSER September 1982 THE PROFESSIONAL ONE ZX81 THERMAL PRINTER The Computer Printer high speed matrix printer combines contemporary printer mechanism design with advanced microprocessor based VLS control electronics and distinctive functional styling Wi Professional high performance 40 column line printer Attractively styled dur
12. PUNEO best invaders games we have S PACE TRAWLER is one of the seen for the unexpanded ZX 81 You blast through a scrolled up 34 hyper space attempting to avoid colliding with the dreaded black inverse spaces On the way you must do your best to trawl up as many comets and asteroids as possible As the program stands it is more a question of space dodgems than of amassing a high score but that could be amended easily by reducing the size of the black holes Congratulations to D Pickering of Bordon Hampshire for cramming so much into so little LET HzHeUINHEY E COINREY PRINT 165997 LET 5 139 HD F THEN GOTO PRINT 1007 AND INMEYS 5 INKEY 1 10 2053 CHAE RND 81 CHRE 25 AND RN SH CHR 10 8027 SCROLL GOTO 19 PRINT AT SINCLAIRUSER September THE EXPLORER S GUIDE A 20 ZX SPECTRUM PROGRAMS 500 usr def chrs generator To The ZX81 Tank battle Alien chase hi k for the ZX81 Enthusiast PSYGOL personality assessment TOPPED PLUS LOTS MORE By Mike Lord 120 pages 4 95 inc VAT P amp P on cassette Programs for 1K RAM and programs for 16K RAM Games Business and Engineering 40 essential PEEKS POKES for your Applications RAM amp 1 0 Circuits Useful Spe
13. computers by the Department of Education and Science and the many keen and interested heads of school and teachers who have introduced computing into their classrooms often using their own machines and programs Yet there lies the irony while machines were being bought there was little or no software available commercially which was written specifically for school use The programs reviewed show that the need for software has been recognised and is being filled There are several points which have to be borne in mind loading the programs has to be made as simple as possible and instructions should be clear and concise in booklet form where necessary with an explanation of what the program does and how it is operated since instructions included as text are often sparse and uninformative The programs should run without bugs use graphics if possible and have interesting content together with excellent error trapping Rose Cassettes sent six tapes for review Junior Maths 1 and 2 Junior English 1 and 2 Champion Quiz and Arithmetic for the under eights Junior English 1 and 2 and Champion Quiz are all quiz type programs and as such because of the limited content and vocabulary largely unsuitable for regular classroom use Champion Quiz however is better than most of its type Junior Maths 1 includes long multiplication and division fractions 1 and 2 and two other programs The level set is difficult but the child
14. goes and plan your spending more effectively Telephone Address Pad Instant access to many pages of information Sinclair ZX8l icrocomputer ZX81 Assembled 69 95 Calendar Displays a 3 month calendar past or future ideal for planning or tracing past 2x61 Kit 49 95 events 16K RAM 29 95 new PRICE E Printer 59 95 new PRICE ORDER FORM All units now in stock Send Cheque or P O with order to Wide range of books software Dept D Richard Francis Altwasser 22 Foxhollow Bar Hill and DCP packs also available Cambridge CB3 8EP Please send me Copies Cambridge Colour Collection Book only 6 95 each Copies Cambridge Colour Collection Book amp Cassette 9 90 each jene Cambridge Computer Store Address 1 Emmanuel Street Cambridge CB1 INE Phone 0223 358264 65334 Atom VIC 20 Tandy TRS 80 in our Budget Micros department m SINCLAIRUSER September 1982 software scene CX arcade games for 5 95 Babtech is at 3 Bakerton Mains View Edinburgh EH14 3BR The third Pac man look alike is the Abersoft Mazeman which also uses the standard cursor con trols this time on a 30x20 maze Once the mazeman starts moving he continues until he hits a wall or you change his direction The ghosts have four possible Shapes A means it is its Pac man hits the Sinclair scene PAC MAN the colourful controls are used for chomping vid
15. graphics symbols INSERTION AND DELETION of lines and characters HELP PAGE onto the screen at the touch of a key CENTRE text on the screen and move text left and right REFORMING of edited text to a neat layout with a single keystroke TASWORD TUTOR We send you manual and a cassette One side contains TASWORD The other side contains TASWORD and TASWORD TUTOR This teaches you word processing using TASWORD No programming knowledge is required to use TASWORD 6 50 wy incisive Mail order only Allow up to 14 days delivery Please make cheques P O payable to TASMAN SOFTWARE 17 HARTLEY CRESCENT LEEDS LS6 2LL COMPUTACALC ZX 362 187 167 16 An advanced spreadsheet program for the Sinclair ZX81 with 16K RAM This versatile software allows manipulation and inspection of data in the most convenient way ever Ideal for financial planning personal budgeting cashflow analysis and count less other business home scientific and technical applications The screen acts as a window on a much larger grid up to 38 x 38 of titles and numbers up to 9 digits Change one number or formula and all dependant results change auto matically Save on tape or printout for a permanent record Tasks that would take hours with pencil paper and calculator be performed in seconds with COMPUTACALC 2 Cassette and booklet 7 95 Available from W H Smith Better Computer shops and mail order from SILICON TRI
16. lan Loga O ZXBI ROM Disassembly Part B by Frank O Hara 8 00 Not only 30 Programs for the 281 IK 69 The Complete Sinclair 2 81 Basic Course Melbourne House Publishers esponde MELBOURNE HOUSE ZX81 SPECTRUM RECENT interview Clive Sinclair said that I day would come when the computer replaced the school He did not elaborate but said that computers would eventually become better teachers than human beings That conjures images of a special room in the home with a system permanently set up with a set of cassettes which have to be worked through There would be examination cassettes which have to be completed in a set time for a qualification to be obtained With even Sinclair having sold into only two percent of the homes in Britain it will be a long time before computerised home education is the most usual system throughout the country It is however something which can be introduced gradually with parents being offered the option of choosing traditional schooling or learning at home In the initial stages that could be expensive as Government help to buy the necessary hardware would be needed together with an investment in the cassettes The cost would be on top of normal educational costs Once the home schooling idea was accepted however the costs of providing education would fall dramatically Almost the whole of the present system would no longer be needed with consequent
17. savings in wages and building and maintenance costs Teachers would be replaced by a handful of people responsible for setting and updating the cassettes and marking the examination cassettes None of the thousands of anciliary staff caretakers cleaners and cooks would be needed School transport would become a thing of the past and crossing patrols would no longer halt traffic at the busy times of the day Additionally vast areas of land would become available for development Clive presumably visualises Sinclair Research playing a leading role in those developments The ZX 81 has long been a favourite machine for introducing children to computers and their educational possibilities The Spectrum has now received Government blessing by being placed on the Department of Industry Micros in Schools Scheme for primary schools Sinclair already provides a package of SINCLAIRUSER September 1982 Home schooling is a dangerous dream educational software and the moves into telesoftware will make the transmission of courses much easier In addition Sinclair has long had the declared intention of developing the educational side of its business the first clues to the ZX 83 being that it will take Sinclair further up market that could be the one which will begin the move to home schooling The only hints available so far are that it will have its own screen using the flat screen developed for the television set use two
18. 6 95 The ZX Spectrum has brought advanced computing power into your home The Cambridge Colour Collection a book of 20 programs is all you need to make it come alive No experience required Simply enter the programs from the book or load them from tape 2 95 extra and run Amazing effects All programs are fully animated using hi res graphics colour and sound wherever possible Entirely original None of these programs has ever been published before Proven Quality The author already has 30 000 satisfied purchasers of his book of ZXB1 programs lower case characters on the ZX printer Hours of entertainment Lunar Landing Control the angle of descent and jet thrust to steer the lunar module to a safe landing on the moon s surface Maze Find your way out from the centre of a random maze Android Nim Play the Spectrum at the ancient game of Nim using creatures from outer space Biorhythms Plot the cycles of your Emotional Intellectual and Physical activity Some would say this is not a game at all Improve your mind Morse Acomplete morse code training kit This program will take a complete beginner to RA E proficiency Maths Adjustable to various levels this program is an invaluable aid to anyone trying to improve their arithmetic Run your life more efficiently Home Accounts Keeping track of your finances with this easy to use program will enable you to see at a glance where the money
19. Some of the connections can easily work loose and everything which has been put in will be lost The manual is not to everyone s taste and if you find it difficult to follow a number of books on the market can help you Find the one which suits you best As a way of relaxing you can buy some of the growing range of commercially produced software That can be loaded directly from cassette but make sure that your machine is big enough to take the tapes you buy There are some programs for the unexpanded 1K machine but most of them require a 16K RAM pack The tapes vary in quality It is advisable to read the reviews in Sinclair User and use your judgment to find the best An alternative method to learn about the ZX 81 is to plunge in at the deep end and see what the computer will do Refer to the manual when you have difficulties You can ignore the functions and calculations initially and experiment with PRINT statements to obtain the feel of the machine You may have heard already about the problem involved in SAVEing and LOADing your own cassettes The m nual again gives detailed instructions but many of the early machines would not accept tapes from some recorders That problem is said to have been overcome but there can still be diffi culties They usually occur when LOADing tapes recorded by other people One simple method to over come this is to wind the tape to the middle of the program and type LOAD followe
20. ZX81 programs fit the 16K machine wane ve Td Gu xr fune sevo hm am atr thom and pay 16K MEMORY trom A voor computer as ng now marie ne sous Ta we nove fu oo a oer pues Sg Tom Machine code editor Wire star and load hax code rd a am DY SPACE INTRUDERS FOR THE ZX SPECTRUM Min score descende siens B4 atene in each Squadron ater squacton attack your poston ALLTHIS YOURS ron ontv 5 95 Barclaycard numb Oxon OX 100E 2 46 SINCLAIRUSER September 1962 sinclair user club Honorary club member served on HMS Hermes during the conflict in the South Atlantic ZX81 sails to Falkland Islands DURING the Falklands produced by a sailor on 36 anhonorarymemberof ZX 81 with him to provide crisis we received many HMS Hermes whilehe was the Sinclair User Club He relaxation from the strain programs simulating some on active service with the received whenhe ofthe conflict I used to of the events in the South Task Force returned to Britain with work during the night from Atlantic We havedecided Inrecognition ofhispart Hermestowardstheendof 8pm to and when 1 however to print only one the action we have de July It was marvellous came off I would spend special submission cided to make Chief Petty hesaid Itmademyhome about two hours at a time The list
21. additional information eg type of membership Cassette B3 VU CALC Psion Hardware required 2 81 16K RAM Price 7 95 Program VU CALC Description Turns your ZX81 into an immensely powerful analysis chart VU CALC constructs generates and calculates large tables for applications such as financial analysis budget sheets and projections Complete with full instructions Cassette B4 VU FILE Psion Hardware required 2 81 16K Price 7 95 Programs VU FILE Examples Description general purpose infor mation storage and retrieval program with emphasis on user friendliness and visual display Use it to catalogue your collection maintain records or club memberships keep track of your accounts or as a telephone directory How to order Simply use the FREEPOST order form below and either enclose a cheque or give us your credit card number Credit card holders can order by phone simply call Camberley 0276 66104 or 21282 during office hours Either way please allow up to 28 days for delivery and there s a 14 money back option of course exirac leair ZX8l SOFTWARE Sinclair Research Ltd Stanhope Road Camberley Surrey 815 3PS Tel Camberley 0276 66104 amp 21282 To Sinclair Research FREEPOST Camberley Surrey GUIS SBR Please send me the tems have indicated below __ Tem cossen ente pce roa
22. any dice game Cassette G11 Chess Psion Hardware required ZX81 16K RAM Price 695 Programs Chess Chess Clock Description Fast efficient machine code a graphic display of the board and pieces plus six levels of ability combine to make this one of the best chess pro grams available The Chess Clock program can be used at any time r 5 Hardware required 2 81 ZXBO with BK BASIC ROM 16K RAM Price 4 75 Programs Perilous Swamp Sorcerer s Island Description Perilous Swamp rescue a beautiful princess from the evil wizard Sorcerer s Island you re marooned To escape you ll probably need the help of the Grand Sorcerer Cassette G13 Space Raiders and Bomber Psion Hardware required ZXB1 16K RAM Price 3 95 Programs Space Raiders Bomber Description Space Raiders is the ZXB1 version of the popular pub game Bomber destroy a city before you hit a Sky scraper Cassette 614 Flight Simulation Psion Hardware required ZXB1 16K RAM Price 595 Program Flight Simulation plus blank tape on side 2 Description Simulates a highly manoeuvrable light aircraft with full controls instrumentation a view through the cockpit window and navigational aids Happy landings Education Cassette E1 Fun to Learn series English Literature 1 ICL Hardware required ZXB1 16K Price 6 95 Programs Novelists Authors D
23. cost of the kit for the 2X81 FREE INSIDE the first edition of our new Spectrum User section devoted to news about the Spectrum its uses and problems NEXT MONTH We look into the future and how microcomputers are likely to play a big part in our lives MELBOURNE HOUSE ZX8 Why is this man smiling You d be smiling too if you were Dr lan Logan SPECTRUM Dr Logan is shown receiving the Rosetta Stone Award for his perceptive insights into the way the ZX81 ROM operates Melbourne House are proud to be the publishers of Dr Logan s books Melbourne House are Sinclair specialists publishing books that are winners in every category Whether you are a beginner or an experienced programmer you ll need Melbourne House books If you ve got a Spectrum on order or better yet if you ve already got your Spectrum then you ll be glad to know that Dr Logan is working on Understanding Your Spectrum sure to become the definitive book on the Spectrum So if you want to smile like Dr Logan you can do one of two things Order one of our books from your bookseller or fill in the coupon and really understand Sinclair you can write a great book or program and send it to us Who knows Your smile may be in this ad next year Machine Language Made Simple For Your Sinclair Understanding Your ROM T 85 7 8 ROM Disassembly Part A by Dr
24. first ask if you require conversion to voltmeter or ammeter you need type in only V or A It then asks for the resistance of the meter and the Full Scale Deflection current and then depending on whether you entered V or A will ask either for the maximum reading of the converted meter IFLE RANGE is a straight Rees but entertaining game submitted by Eve Gorton of Stockport It involves blasting at a moving row of ducks fairground style You have 16 ducks to kill and an unlimited number of bullets Once you have run out of ducks you can press S for your score and sharp shooter rating To date she reports no one has managed to shoot all 16 targets in only 16 shots Graphics notes 85 Graphic shifted A 90 Alternate spaces and graphic shifted Ys 16 of each SINCLAIRUSER September 1962 19 PRINT 26 INPUT 34 PRINT 4e INPUT S PRINT INPUT 70 IF ASi PRINT NT PRINT 185 LET R 118 CET 8 MOLTHETER OR ANMETER AS AS RESISTANCE OF R R FSO CURRENT 1 275 THEN GOTO 300 2 REQUIRED FSD CURARE RAF y S F ise LET C 238 PRINT 140 PRINT 15 PRINT 160 PRINT 178 PRINT 18e PAUSE ise CLS 200 RUN PRINT 310 INPUT S88 PRINT 330 LET R 340 LET 8 COMHECT A Bs OF ZR OK S cs THe METER 11 PRESS KEY ace F MAXIMUM READING RAF MULTIPLIER
25. machine code video game with impressive graphics Features include best score of the day auto on the control keys auto return to the self demonstrating title page Requires 16k Supplied on tape with instructions Action packed fun for only 4 45 FIGHTER PILOT 15 feet 7feet Touchdown Another successful instrument landing Appoaching at 150 knots is not always as easy as this You are in full control from take off to landing during this real time flight simulation of a jet fighter The sky is the limit Fly a different mission every time Endless Scope for improving your instrument flying skills 16 RAM Required Suppied on tape with full instructions Supervalue at 4 45 prices inclusive Overseas add 0 55 p amp p per tape products guaranteed refund not satisified Digital Integration 22 Ash Church Road Ash Aldershot Hants GU12 6LX MAIL ORDER ONLY KEMPSTON Micro ELECTRONICS ZX81 Klik Keyboard This is a ful forty key mo which fits into the recess peeling off the existing touc sensitive keypad Consider E the following advantages Positive feedback from item 100 pence for 2 or more items Payment by cheque or P O Available by mail order from KEMPSTON Micro ELECTRONICS Adamson Court Hillgrounds Road Kempston Bedford MK42 BAZ Please allow 21 days for delivery S A E in all correspondence See us at the
26. or conset code pea rona SuperProgrms2 ___ 31 1495 Geography 1 s esos 22 ess IET Le a super Progomsa es Matemancet esos Ts Tease es Stee Propene ET evertere 97 use Jit cotectorspacr oo j Tes wea BA orton Ts eros jme rar m eae Tome enclose a cheque postal order to Sinclair Research Ltd for Please charge my Access Barclaycard Trustcard Please delete as applicable 1 Mr Mrs Miss address 1111111 Build your own Sinclair Special ZX 81 Kit Offer ONLY 29 95 plus p amp p SAVE 20 on a Sinclair ZX 81 kit A special offer open only to readers of Sinclair User has been negotiated with Sinclair Research which means you can buy the world beating ZX 81 for just 29 95 plus post and packing Stocks are limited so be sure to place your order soon Allow 28 days for delivery Maximum four units per applicant SSS ee Ee roe a To Sinclair User Special Offer ECC Publications 30 31 Islington Green London 1 8BJ 1 Please send me ZX 81 kit s at the special Sinclair User price of 29 95 plus 2 95 p amp p Please tick if you require a VAT receipt O I enclose che
27. rather than the standard board The Street map took up a few hundred kilobytes and thus was not easily put into the 2281 The basic mechanics of the game 1 for the ZX 81 but the game played on a blank map The streets are constructed with the buildings Now slong came the SPECTRUM With 48K of RAM and in went the street map not London but an imaginary town The colour facilities made the program simpler than the mainframe version because much more information can be displayed to the player on one screen In the end CITY is notat all ike the game that inspired t Everyone that we have invited o testit says that itis much better sex zx e1cirves 48 ZX SPECTRUM CITY 8 ZX ASSOCIATIVE DATABASE SYSTEM A variable format database in which nothing need to pre defined It adopts to your needs as you use i Conventional searches soris Updates merges ete become a thing of the past Our loca EXPERTS SYSTEMS expertis quite worried about I 16 2 41 08519 160 48K ZX SPECTRUM ADBS 14 DOCIMODUS 1161 Welmersiey Road Bury Lancashire BL9 SDE Le iii SINCLAIRUSER September 1982 Philip Joy considers a pair of old mind games anagram and crossword and finds them difficult for computers Good use of screen by rare word games HAVE decided to include details about two things a review of two programs which are old mind games Anagram and Crossword The second th
28. suppressor They can be obtained from a radio dealer and are sup plied by Radiospares the mains version is code 238 457 It is a small com ponent which requires soldering across the mains at the input to the trans former in the power supply unit which must of course be disconnected from the mains before dis mantling Although the loading of the Spectrum is far su perior to the ZX 81 the Spectrum has a slight idio syncrasy You can have saved your programs on tape and loaded success fully many times when it apparently refuses to do so The remedy is to ensure that your batteries are at full voltage apparently when the voltage drops below the control voltage for the tape recorder motor stabilisation circuit the speed of loading drops and the Spectrum notifies a tape loading fault Re placing the batteries will cure the fault F Harrop Hollingbury Brighton 21 MAKE THE MOST OF YOUR MICROCOMPUTER WITH OUR POPULAR RANGE OF PROVEN BOOKS GETTING ACQUAINTED WITH YOUR 2X81 by Tim Hartnell Eighty plus programs inthis 128 book including draughts 895 20 SIMPLE ELECTRONIC PROJECTS FOR THE 2X81 and other computers by Stephen Adams 6 45 MASTERING MACHINE CODE ON YOUR ZX81 OR ZX8BO by Ton Baker 180 pages teaches machine code from first principles 7 50 49 EXPLOSIVE GAMES FOR THE 2X81 by Tim Hartnell 5 95 AMAZING GAMES F
29. there is noneed to teach about computers without showing one in use continued on page 10 9 continued from page 9 Which one to show in use The 1K ZX 81 may be programmed to emulate every aspect of computing one may wish to discuss in awareness classes The 16K ZX 81 or Spectrum with printer can do so even better and at more depth but the programs need more effort to write Courses of that level need to deal with such things as the principles of data processing the databank number crunching interfacing Computing in situations such as hotel booking banking office work and the laboratory can all modelled adequately and cheaply by the ZX micros Some computer awareness courses introduce programming both as a logical concept and to provide the basis for voluntary computer club activities The Sinclairs are peculiarly suitable for such work being surely by far the best beginners machines available Iam not certain if that applies to the Spectrum the exceptional features of single key word entry and syntax checking mean that even seven privately owned equipment on loan Perhaps the best way of consolidating computer awareness is for the majority of teachers to use computers as a resource in their teaching That takes us to the broad important area of computer assisted learning The success and significance of Sinclair micros may be gauged from the facts There are about 25 software houses specia
30. your 2 81 work for you The one you ve been waiting for susan Cassette based Clear menu operation Facilities include sort search list delete change total numeric field save and load file line print etc Complete with demonstration file and full instruction application leaflet Requires 16K Ram pack Applications Recipe file Stamp coin collections Inventory Control Employee Data Record Collections Magazine article catalogue May be used for any application where fast access is required to stored information Access accepted ONLY Send cheque or P O or credit card number to 5 95 FULLY INCLUSIVE GEMINI MARKETING LTD 9 Solartron Road Exmouth Devon EX8 288 d OR telephone us with your credit card order aret Exmouth 03952 5832 oe DESPATCH BY RETURN SINCLAIRUSER September 1982 25 MICROWARE Retail Shop In LEICESTER for SINCLAIR Computers Keyboards Ram Packs 1 0 Ports Monitors G Roms Games Serious Home Business Education Programs Books amp Magazines Also Now stocking Books and Software for SPECTRUM BBC and VIC 20 MICROWARE 131 Melton Road Leicester Tel 0533 681812 Closed Thursday MICROWARE ZETA TEACHING PROGRAMS ZX81 16K Range of Professionally Produced Programs for Junior amp Middle Schools Ages 8 12 based on the Space invaders theme this SPELLINVADERS REACTIONTEST GRAPHS
31. 110 NEXT I 120 PRINT COMPLETE 130 GOTO 10 INITIALISATION 2000 PRINT SAVE ROUTINE ENTER PROGRAM NAME 2010 INPUT 25 2020 SAVE 25 2030 GO TO 10 For the purposes of the demon stration I have assumed that the important part of the program lies between lihes 200 and 1999 The initialising routine at lines 50 to 130 asks the user to enter the values which simulate the DATA state ment Those values need only be ered once because the save routine at line 2000 saves both the program and the variables on cassette and then jumps back to the beginning of the program Next time the program is loaded from cassette it will come in running and jump back to line 10 with the values of all the variables in particular the values in array B still intact He is then free to transfer the values out of the array later in his program In fact once the values of B are ablished lines 50 to 130 are dundant and could be deleted by entering each line number in turn in sual way see answer to Mike Chandler later for a more interesting method It is important however not to start a program by using RUN if you want to retain the variables You should use GOTO 1 or some other appropriate line number instead John Randall of Woking Surrey should note the use of GOTO instead of RUN He writes suggest a programming tech e so that initials and a score are continued on page 42
32. 1982 as The high speed arcade game Easily the fastest available 32 zones thrust and altitude controls ONLY 3 95 Other great ZX games and add ons from Mikro Gei A D Converter Board Space Invaders Lets you connect analogue the best you get with Joysticks to the 2 81 digital ever increasing rate of play inputs Suitable for many other applications easy to connect Breakout and it improves RAM pack with seven bat angles to it really difficult Bomber positively addictive Connect via our A D Board makes your ZX81 a true ZX Chess programmable games Theoriginal andstilihebest machine ONLY 9 50 EACH stie Sorcerer s Castle Disassembler Monitor Eres aat An absolute mustwhen NN learning machine code emm er 3 95 each ZX Chess 6 50 ONLY 3 95 RIBA 24 Agar Crescent Bracknell Berks RG12 2BK Tet Bracknell 0344 27317 36 TASWORD WORD PROCESSING ON THE ZX81 Your 2 81 becomes a word processor with TASWORD Type in letters documents and pictures store them on tape and edit and Update existing documents With a printer which is not essential you can print your documents TASWORD FEATURES INCLUDE IVER 300 LINES of text in a text file CURSOR CONTROL and auto repeat on all keys SCROLL up and down through the text file AUTOMATIC word wrap and right justification FULL ZX81 character set including inverse characters and
33. 509 and you will see Address Contents Meaning 16509 0 line number 16510 10 256 0 10 10 16511 2 line length 16512 0 2 256 0 2 16513 234 16514 118 newline Notice that the line length ex cludes the four bytes required for the line number and the line length The following routine finds the address of the first byte of two lines entered by the user 9000 DIM B 2 9101 LET START 16509 9020 PRINT ENTER FIRST AND 42 just one monster line by POKE ing the difference between B 2 and B 1 less 4 into the slot for the line length of the first line That is achieved by adding the lines 9200 LET 2 2 1 4 9210 POKE 2 B 2 256 INT 2256 9220 POKE 1 3 INT B 2 256 The monster line can then be deleted in the usual way by enter ing the line number alone Derek Chadwick of Kingston Surrey has an interesting question He asks Is there any way of lining up figures by the right I am cal culating interest amounts to two decimal places The following routine will round to two decimal places the data entered at line 20 and right justify the figure printed at line 80 Notice that 0 5 is added in the calculation to round the number in line 30 be A cause the INT function always rounds down If the 0 5 were not present then 9 877 for example would be rounded down to 9 87 when it should be rounded up to 9 88
34. 695 Programs Composers Musicians Description Which instrument does James Galway play Who composed Peter Grimes Cassette E7 Fun to Learn series Inventions 1 ICL Hardware required ZX81 16K RAM Price 6 95 Programs Inventions before 1850 Inventions since 1850 Description Who invented television What was the dangerous Lucifer Cassette EB Fun to Learn series Spelling 1 ICL Hardware required ZXB1 16K Price 6 95 Programs Series A1 A15 Series B1 B15 Description Listen to the word spoken your tape recorder then spell it out on your ZX81 300 words in total suitable for 6 11 year olds SINCLAIRUSER September 1982 Business household Cassette B1 The Collector s Pack ICL Hardware required ZXB1 16K RAM Price 9 95 Program Collector s Pack plus blank tape orside 2for program data storage Description This comprehensive gram should allow collectors of stamps coins etc to hold up to 400 records of up to 6 different items on one cassette Keep your records up to date and sorted into order Cassette B2 The Club Record Controller ICL Hardware required ZXB1 16K Price 9 95 Program Club Record Controller plus blank tape on side 2 for program data storage Description Enables clubs to hold records of up to 100 members on one cassette Allows for names addresses phone numbers plus five lots of
35. 95pep ZX99 SOFTWARE We now have available Editor 99 a quality word processing program including mail merge supplied on cassette for 9 95 Also following soon Stock Control Sales Ledger Business Accounts Dept SUS Data London Order Processing Debtors Ledger Tax Accounting Assette 4 16UG 01 58 04 399 CASSETTE RECORDER data asettes 25 inc P amp P Tel 01 258 0409 auto record le Tested with 2 81 and Acorn Ideal for recording Features Cue and Please enquire about our BBC recorders STAR DP8480S 299 RS232C interface bi 80 column printer W directional ks with 2 81 and ZX99 plus 6 Securicor delivery 80 CPS also BBC Atom Tandy and most other major E690 REVOLVING CASSETTE RACK BBC CASSETTE LEAD pin plug to two 3 5mm plugs and one 2 5mm plug Only 2 inc P amp P COMPUTER CASSETTES Single Double Treble Quad 2 99 holds 32 tapes or 20 in cases 5 99 holds 64 tapes or 40 in cases 8 99 holds 96 tapes or 60 in cases 11 99 holds 128 tapes or 80 in cases ORDER FORM Dept 505 Data Assette 44 Shroton Street London NW1 6UG 01 258 0409 Price inc P amp P ian a C5 35 C15 39 10 37 C20 41 C30 44 C12 38 C25 45 SINCLAIRUSER September 1982 7vcn J K GREYE SOFTWARE LTD LI GENCDOTIDN CACT
36. CKS Dept S7 2 4 Chichester Rents London WC2 1EJ Tel 01 603 NOW AVAILABLE SPECTRACALC for Spectrum 16K amp 48K a features of computacalc ZX 12 96 mail order only SINCLAIRUSER September 1982 hardware world US firm makes a new printer AN AMERICAN company stantly by typing in RAND Mindware has produced USR 16025 a blue ink on plain paper Itwill then provide faci printer for the ZX 81 lities such as a full re Having 16 characters number of GOTOs as well line it cannot produce the as GOSUBs and line full screen picture like the numbers Find Insert De Sinclair printer but the lete Move Copy and Keep usercansetvariousmodes Basic lines within pro to give the display he gram Keep and Insert wants by POKEing a store program lines above system variable 16417 RAMTOP to be Inserted with the mode required into another program After that the printer Alter allows you to search will react like the Sinclair the program for a string of printer to COPY LLIST and LPRINT The port used is the same as the Sinclair printer and an EPROM in the printer controls its operation without taking up any memory space Mode 1 is the screen split in half the left hand side being printed before the right hand side Mode 2 will be used for extra character sets in the printer Mode 3 is for a 16 character line LIST and Mode 0 is used for LLIST The paper used is the
37. ED FOR CATALOGUE e then 1 Groves 10 MONSTER MAZE would be the IX COMPUTING Bertier tare POPULAR COMPUTING WEEKLY te your home pret hom the rud Ale Spacecra fie SO your vewscraan shows you vew out Frou rie ccc wr acon avn sn Kaiu aniy ving it But nan YOU ARE The Enemy Saucers roam tomaran you in 30 and shoot you if you let them You TESS Stine Shae Senge Amuda Prony Forward Rade and vou wow vour read home paret backdrop of Stas Meteors Peara Biasa Your Proton Beams up 16 4 Enemy Saucers and X SMASH MIT et tha ZX Microtai imot of the other software houses want e Copy s gara not tobe mane GAMESTAPE foc 1K nss BREAKOUT Super Fast Ful Screen Game Your Me favourite wh an added how much Moray fou can win and watch the pounds conver to Dolan Gage tr Fav Acton wit 3 Speeds 2 Bat Sue ha three anges of rebound The best BREAKOUT oud tin a tea pie vou can go wrong GAMES MARKED INCL MACHINE CODE Prices include VAT and U K P amp P Add appropriate Postage on Foreign Orders Cheques P O s to J K GREYE SOFTWARE LTD 16 Brendon Close Oldland Common Bristol 8515 60E CREDIT CARD SALES Phone 01 930 9232 9 a m 7 p m FOR INSTANT DESPATCH you prat sae tora bung ou range of GAMESTAPES we socked by a stores BUFFER MICROSHOP 34A Sweatha
38. I I 7 THE NEU GENERATION SOFTWARE HOUSE Without question the finest machine code games available Today ROWLAND Product Manager for W H SMITH GAMESTAPE 1for 1K 9 To mer inch ASTEROIDS UFO CODE BOMBER GUILLOTINE KALEIDESCOPE PROBABLY THE BEST VALUE Tk TAPE AVAILABLE require 16h to do GAMESTAPE 2 for _______ SOYARRIOHTER Supers machos code Space Bare Set pane teckground i twain sar wih St it you can ht a enemy PYRAMID Can you move the Pym Make matake and Racal A Thiers game ARTIST The uitate Grape Designers a B Dvectons 10 Momonon SAVE COPY RUBOUT CLS GAMESTAPE 3 for Wk SCATACOMBS Muir levi con oman up to 9 Rooms 8 Food Ge Nore Yan excellent addictive game which wal keep you amused Tor hows COMPUTER 5 VIDEO GAMES mum 7 Monster SID MONSTER MAZE nbeievate Gragnani Can you ind you wav COMPUTER ts VIDEO GAMES pugremme to pres sudience with the capabes of BUFFER MICRO SHOP TO STREATHAM STATION NEW SOFTWARE SHOP EXCLUSIVELY FOR ZX81 PROGRAMS GAMES 5 MOST OF THE ORDER ITEMS ADVERTISED IN THIS MAGAZINE AVAILABLE OVER THE COUNTER LOADING PROBLEMS TRY OUR INTERFACE BUSINESS amp TECHNICAL DATA HANDLING PROGS PROPER KEYBOARDS CONSOLES VDUS 374A STREATHAM HIGH ROAD LONDON SW16 Tel 01 769 2887 S A E APPRECIAT
39. ICODER CAMBRIDGE der Cambridge 3PH zx SPECTRUMI6K GAMESPACK 1 Fast moving asteroids Batnum Bomb run missile command and defender only 5 50 the lot Sae for details Bhattacharya 3 Wensley Close Harpenden Herts OMEGA SOFT The last word in educational and games programs for the SPECTRUM and 281 Maths or English 9 14 only 3 95 for 5 prog cassette Sae for catalogue 299 Laburnum Grove Portsmouth ADVERTISEMENT INDEX ABERSOFT ADDICTIVE GAMES AFDEC ARTIC COMPUTING BUFFER MICRO CALPAC CAMBELLSYSTEMS CAMBRIDGE COMP SHOP CARNELLSOFTWARE CLASSIFIED COMPUTEX CASES D K TRONICS DATA DEAN ELECTRONICS DIGITALINTEGRATION DOCIMODUS EDUCARE ELECTRIC PENCIL CO FULLER MICRO GEMINI MARKETING HARRIS 8 LOCKYER HEWSON CONSULTANTS HILDERBAY INTERFACE J R S J K GREYE KAYDE 49 50 2 15 39 26 44 52 57658 SRSESRBRERSRRS 8a KEMPSTON LINSAC MCASSOCIATES MELBOURNE HOUSE MEMOTECH MIKRO GEN MICROWARE MICHAELORWIN NORTHERN PREMIER OASIS SOFTWARE PSS J G PRINCE PICTURESQUE PHOENIX MARKETING READOUT RICHARD ALTWASSER SCISOFT SOLENT SOFTWARE SILICONTRICKS SOFTWARE FARM SOFTWARE LIBRARY SILVERSOFT SECOND HAND SINCLAIR TASMAN TIMEDATA ZXSAS Sss SSSSENURES5NBETP ESEBAIBET SINCLAIRUSER September 1982 THE ZX BOOK CLUB DUE SEPTEMBER 1982 written by the man who helped write the documentation for the ZX Spectrum LEARNING TO U
40. Instructions to Scorpio Research 24 Geary Drive Brentwood Essex 10 2X81 1K GAMES including UFO Air Battle Doodle Bug Demon Kil stick on soft keys Send 4 00 Post Free to Jackett Software 48 Fairwater Ave Welling Kent AMAZING NEW BREAKOUT FOR 16K ZX 81 Features super fast machine code speed on screen scoring excellent graphics Before After game random graphics patterns Also two versions of Star Smash You whiz t flying stars Also in machine Code Just send 3 95 to Autosoft 5 Burnside East Bolden Tyne amp Wear NE36 OLS PO Cheques to M Watson SPECTRUM AUDIO AMPLIFIER really hear the keyboard and just plugs in only 9 95 complete A Pennell 14 Sweyn Rd Cliftonville Ken 57 GAMES 1 10K Tower of Brahma Wie out Maia Stopwatch Space Adventure and Depth Char Roe PoP PSE GAMES 2 OKI Fru Machine Fighter Plot Night Fighter Command Pb arcade games on Games 2 writen n machine code T piste GERMAN LANGUAGE EDUCATION SYSTEM Chir taking O or A levis Business Penanda Want t mprove yout standard Suiten covers grammar verbs vocabulary ht and aid fo tearing lading rendo tes to tet progress and Sve home amp taper GERMAN GRAMMAR V 2 and d and DATAPHRASE _ a c
41. OGLYPHICS Decode the ancient 39 symbol alphabet in time to save the famous explorer Wulle from a sandy grave FULL 16K PROGRAM sANIMATED GRAPHIC DISPLAY RANDOM CODE WUMPUS ADVENT RE MOVIE MOGUL 5 00 WUMPUS ADVENTURE FOR 1 TO 4 PLAYERS Seok the famous creature in the most dangerous Wumpus hunt ever All the usual features are there SUPERBATS PITS TREMORS SWAMPS MAGIC ARROWS PLUS Exciting new features EVIL GOBLINS that wir tosacficeyon to the Wur GIANT SERPENTS WUMPUS MUCK MAGIC SPRINGS FULL 16k PROGRAM RANDOM amp PRESET CAVE PATTERNS YOU CONTROL THE LEVEL OF DIFFICULTY GREAT FUN FOR YOU AND YOUR FRIENDS 8 MOVIE MOGUL Guide your film through the often hilarious traumas of production Use your Dudget wisely and you may make a fortune Success depends on many factors and not just luck FULL 16K PROGRAM ORDERS Plus 500 PEP or large S A E for list to CARNELL SOFTWARE ASTAUNTON ROAD SLOUGH BERKS 812 INT The above ae siso avai rom BUFFER MICROSHOP STREATHAM LONDON ZX SPECTRUM Wahina few weeks of getting our tirstZx 81 we had good working version of MONOPOLY We did not think it would sll so we crapped it We have been kicking one another ever However it was developed in parallel to mainframe game called CITY wich was an enhanced version ot MONOPOLY played a street map of London
42. OI 20 7 1 BAB BIO THEN gero ie Cer 318 ter 25223 THEN 85 THEM LET uzus1 THEN coro sigeg TO READER from Sleaford Lin writes I am always frustrated to find that programs in magazines are generally emulations of arcade space games I am sure there must be many readers who enjoy tackling a mind bender Further to his policy B McIntosh has sent a puzzle which depends more on tactical thinking than on quick work with the cursor finger You are given a column of numbers from 1 to 9 and are required to separate the odd and even numbers and place them in order of value on a second and third column You have two other columns to give you room to manoeuvre moves are input by typing the column on which your number appears then the destination column and then hitting the NewLine key The computer will count the number of moves taken and inform you of your score at the end of the game The snags are that a greater number may not be placed on a smaller one an even number may notbe placed on an odd one and vice versa once a number has left the first column it may not return 10 entries are separated by two spaces 60 Five graphic As inverse space two graphic spaces inverse space eight graphic As 105 Eleven spaces 400 See 10 X lom gue 600900 LET cts
43. OR THE 1K 2 81 by Alastair Gourlay 4 95 THE GATEWAY GUIDE TO THE ZXB AND ZXBO by Mark Charon Over 60 programs and routines ZX BASIC explained in detail 6 45 LEARN PASCAL ON ZXB ZX SPECTRUM OR BBC MICRO COMPUTER WITH PASCAL FOR HUMAN BEINGS by Jeremy Ruston which contains a 12K compiler so you can runa limited version Of Pascal on your 281 ZX Spectrum or BBC Microcomputer Book plus compiler listing 4 95 LET YOUR Hartnel over4O programs BBC BASIC trom first principles IC MICRO TEACH YOU TO PROGRAM by Tim 6 45 THE BBC MICRO REVEALED by Jeremy Rusto the BBC Microcomputer tor the serious user GETTING ACQUAINTED WITH YOUR VIC 20 by Tim Hartnel with over 60 programs to get your VIC up and running trom day one 6 95 SYMPHONY FOR A MELANCHOLY COMPUTER by Tim Hartnei 24 great Vic games 6 95 39 TESTED PROGRAMS FOR THE ACORN ATOM Best interlace edited by Tim Hartnett 6 45 GETTING ACQUAINTED WITH YOUR ACORN ATOM by Trevor Sharples and Tim Hartnell 184 pages 80 programs including draughts 7 95 INTERFACE the monthly magazine published by the NATIONAL ZX USERS CLUB is just 9 50 UK 12 50 Europe for 12 issues Sample copy with many programs for your ZX computer book software and hardware reviews education contact addresses just er Please send me the items marked 1 enclose Name Address Please make cheques payable to INTERFACE and send the above form
44. OTO 50 That was because in using RUN she cleared the variables loaded from the tape I feel that AVC should reconsider that part of its programming policy as one has to reload the program to re start it Tables Countdown is slightly expensive for what it does as the Rose cassette arithmetic for the under eights offers four programs of better presentation for 4 50 although a simple graphics reward is included It tests the four rules without help at four levels of difficulty Geography Hangperson tests knowledge of locations in the British Isles with the aid of graphics clues The locations are not well thought out and the contents of the program are limited but the clues are amazing 1 there a town that makes frisbees Sir It looks like a man with his head on the wrong way round I cannot recommend either of those two programs for school use There are better programs available and at lower cost Although the AVC programs can produce a pr ntout of scores so can the Rose software of which the children thought very highly and did I They were better thought out and far more comprehensive than other products with the exception of the Negus cassettes which were also very good Loading in all cases was first class and only proves that good cassettes are vital for easy loading Cheap tapes just will not suffice Instructions were poor for all the programs reviewed educational software real
45. PCW Show also ZX Microtair four Name and Address Description 2X81 Kiik Keyboard kit 40 keys ZBI KlikcKeyboard buit 40 keys Quantity Postage Unit Price Amount Northern Premier Exhibitions proudly announce their 1st ZX fair on Saturday 2nd October 10 a m till 5 p m Admission Adults 75p Children under 14 50p PUDSEY CIVIC CENTRE DAWSONS CORNER STANNINGLEY NR LI midway between Leeds amp Bradford Hardware Software Books and Magazines everything for the ZX User This Fair is exclusively for ZX Computers so come and enjoy A DAY OUT among friends SINCLAIRUSER September 1982 SCISOFT Great games packs for 16K 2 81 PACK 1 STUDY PACKS Taking Exams next year Superb book of Revision Notes ASTRO INVADERS Just look at these features then look at the price f BEETS bese n Shao ig min wove seg tte S each Answers given wer cody sauce aepo stack Program Hints on How o Revise ier hae Gn sce a count 4 Programs of Multiple choice questions H Seal satin esum Most original ated uzt iginal and useful J DERBYS Very pleased with Physics please send Chemistry Aatro invaders is yours on cassette for ONLY E288 with A A SUSSEX FOUR BONUS GAMES ARCADE GRAND PRIX PENALTY defend your
46. Parkway Regents Park London NW1 7AA Tel 01 485 1059 Telex 22870 SPECIAL GRAPHICS zx SCREEN KIT 1 Fou recone BORDERS mith SCROLL in FILL SCREEN character ART OF SCREEN any part So MORE POWER TO YOUR SCREEN in Basic programs FLASHING CURSOR anywhere on screen simulates INPUT wth DATA FILES toto Seka dat rogas t ana MEMORY iat DOUBLE SPEED d sche code re STANTAREOUS SCREEN RESPONSE nc bors 1o enning Tem M 65 705 ZXMC MACHINE CODE DE BUGIMONITOR Atlast ER FREEDOM FROM for programmers nant WE aa MC programming ERNEUT e SAVE LOAD VERIFY AT DOUBLE SPEED from any part of RAM meeps Beer 750 ferm MACHINE CODE ENTRY DE BUG cael bese eo Bane rogram of ME wot REM LOAD Hu 6 95 Wa ctr PLEASE SEND FOR DETAILS OF SPECTRUM SOFTWARE SINCLAIRUSER September 1982 Andrew Hewsor Data handling can be achieved on ZX 81 CANNOT claim that the column 1 has theme this month as the letters in my postbag have been too varied it must be something to do with the weather John Perry of New Malden Surrey writes I have been trying to convert a gram written for the TRS 80 but the program uses DATA and READ statements which are not available on the ZX 81 I am considering jumping on the machine because if it can
47. SE only THE ZX SPECTRUM COMPUTER 5 95 by Robin Bradbeer 100 pages fully illustrated This book has been written specially to help new and prospective owners of the ZX Spectrum to easily understand the operation and full capabilities of this amazing new microcomputer Provides clear descriptions of the hardware and functions describing use of the new keyboard command keys and editing facilities Explains simple programming using Sinclair BASIC Describes graphics and colour facilities in detail Includes many programs including animation Appendices cover technical details and a glossary ALSO DUE SEPTEMBER 1982 and also by Robin Bradbeer LEARNING TO USE THE only 2X81 COMPUTER 5 95 In the same series as the Learning to Use the ZX Spectrum this new book follows the same format style and content and will prove an invaluable guide for new and experienced 2 81 owners Other bestselling titles Byteing Deeper into Your ZX81 by Mark Harrison 20 Simple Electronic Projects for the ZX81 by Stephen Adams Mastering Machine Code on your ZX81 by Toni Baker The ZX81 Pocket Book by Trevor Toms READ OUT PUBLISHING COMPANY LTD 8 Camp Road Farnborough Hampshire GU24 6EW Telephone 0252 510331 2 Telex 858001 GOWER G lie READ OUT PUBLISHING COMPANY LTD 8 CAMP ROAD FARNBOROUGH HAMPSHIRE GU24 6EW Please reserve my copy ie
48. ZX 81 developed a fault Not to worry it was fully guaranteed or so I thought According to Sinclair Research I had in validated my guarantee by opening and removing the computer board from its casing he said The necessary repair work will cost him a minimum of 20 It is also thought it is a reaction to the announce ment by Binatone that it will be selling a micro costing less than 50 The machine is being imported from the Far East and the launch date depends on tests of the machine prov ing satisfactory It is hoped to have it on sale before Christmas The ZX 81 will soon be available through more retail outlets This follows the signing of an agree ment with Prism Micro products for sole distribu tion rights for the machine in Britain to small retail organisations with fewer than 20 outlets Prism is a sister com pany to ECC Publications which publishes Sinclair User Its future plans in clude increasing its dis tribution of hardware and software items in the Sinclair market Winner of the Spectrum is announced THE WINNER of the Spectrum and printer we offered in our June competition is S J Church man of Blandford Camp Dorset From a high quality entry the judges decided that his version of an EPROM blower was the best We will print an outline of the hardware and a review of its capabilities in our next issue ridge oftware RAM Pack Software 2 81 l
49. able housing Total interfacing Quiet operation Graphics capability standard Wi Uses Olivetti dot matrix thermal print mechanism 8 Low cost thermal paper supply 94 50 Wi Price includes ZX interface and one roll of paper inclusive of ZX interface and one roll of paper COMPUTER PRINTER DIVISION Please add 16 47 to cover postage packing and DEAN ELECTRONICS LIMITED VAT total 110 97 Glendale Park Fernbank Road Ascot Berkshire England Please allow maximum of 28 days for delivery Telephone 0344 885661 Telex 849242 e 7 MAESAFALLEN BOW ST DYFED SY24 SBA te SO ARE ZX81 amp Spectrum Games IN PACKAGE FORM AY UNDELIEVADLEPRICES Now NEW LOW prices PROGRAM OLD NEW 81 SPECTRUM SPACE PACK 5 i Chess 1 4 10 00 8 95 5 oft San AUEN 10 levels Adventure 1000 895 140 locations based on the original GAMES P ore At 10 00 well worth the money rums Sinclair User Issue 2 review PERRE PAAK SURER BREAKOUT IMG and HIGH RISE Invaders 5 00 445 Fast mic arcade action OF Quatty programms at ry PERSONAL SOFTWARE SERVICES 12 OLIVER STREET COVENTRY CVE SFE Mazeman 500 445 Trove pact All the features of the original es re arcade version mic Coventry CVESFE eno cas jes are avaiable at 4 96 each 6 95 for two or 8 80 for three All
50. aimed to be to one degree centi grade The ZR3 can be obtained from Cheshire Micro Design Lane Alsager Stok Trent ST7 2TR Tel 093 63 6196 It costs 17 50 including post and VAT for the U K Foreign orders should add postage for 240 grammes Ad Lib plot for graphics A GRAPHICS plotter sheet for the ZX 81 is available from Ad Lib for formatting your screen display It con sists of a plastic coated paper sheet 8 by 11 in with the screen PRINT squares on one side and the PLOT squares on the other On the PRINT side there is also a list of the graphics symbols The sheets are supplied with an overhead projection pen which must be used They can be re used by erasing the draw ing with a damp cloth The cost of five sheets and one pen is 2 50 and a pack of coloured pens for formatting on the Spec trum is available at 4 75 from Ad Lib 2A Grove lands Avenue Hitchin Herts Tel 0462 56074 Twin EPROM from Taurus TAURUS Computer Design has produced two EPROMs on a board for fitting inside the ZX 81 The first contains a moni tor plus an added dis continued on page 38 continued from page 37 the character set EPROM is 37 50 including VAT Memotech added to give assembler in 4K The 10 and the assembler and postage 48K of usable memory second contains assem EPROM 12 Cassette ver Gordon Electronics 76 black box is Cen for rapid translat
51. alien spaceships DROPOUT 5 95 Exciting NEW arcade game Can you destroy the aliens before they build up in their atomic plies and overwhelm you Dealers enquires welcome generous discounts When ordering 2 or more deduct 1 00 Send S A E for Catalogue Tick boxe s required to SILVERSOFT Cheques POs pay Name WANTED spectrum Micro Software games run in 4K Ar HILDERBAY LTD Professional Software SPECTRUM SOFTWARE now available Details from us 48K Payroll 25 until 21 September Tape recorder suitable for microcomputer use aligned and tested on computer signals 22 2 p amp p Hiderbay Loading Aid Load your microcomputer from tape first time every time 5 95 ZX 81 16K RAM packs comprehensively tested for bad bits addressing faults printer saving 30 HILDERBAY SUMMER ZX 81 SALE Beamscan beam analysis Payroll Stock Control 13each Optimax 20 until21 September Budget amp 9 2 programs Time Ledger Critical Path 8each Financial id Gol 5each These programs have been described and reviewed previously or we can prove details Ali prices include VAT and are post free Sale prices are valid until 21 September 1982 Free updates comprehensive telephone and personal support and competition prizes are not available for summer sale purchases HILDERBAY LTD Professional Software 8 10
52. apable of driving LEDs directly so using the RAM I O enables traffic light sequences to be produced with LED switches to be monitored and other electrical items to be controlled The opportunity for experiments is enormous A second unit called the Control Pack contains eight relays each capable of switching 1A at up to 30V The Control Pack uses mechan ical relays so the external circuitry is isolated from the ZX 81 with a high degree of protection provided for the computer The unit plugs directly into the rear of Pack from which it draws its power teaching hardware supply All external connections both input and output are via 2mm sockets The third in the range is an Analogue Pack Again it plugs directly into the rear of the Pack The unit will convert an analogue input voltage in the range 0 to 2 55V to a digital signal to feed to the computer When outputting from the com puter it will convert a digital value from 0 to 255 to an analgue output in the range 0 to 2 55V External con nections 10 the Analogue Pack are via 2mm socket three packs are housed in a robust plastic case The Control Pack and Analogue Pack are used in conjunction with the RAM I O Pack and not on their own Full operating instructions are supplied with each pack Prices are CRA 720 H ZX 81 RAM I O Pack 35 54 CRA 724 520D Analogue Pack 18 69 CRA 724 5400 Control Pack 28 05 To keep to
53. ape control system for e ZX 81 This month our competition is based on an idea from a reader Tony Poulter of Meopham Kent The aim is to write a program for the 1K ZX 81 which will display a full screen of 748 characters As that is regarded as impossible it may be necessary to award the prize to the person who manages to achieve the greatest number of characters We shall be looking also for the most elegant and flexible solution As a tie break should one be necessary we want you to write a slogan beginning with the words I would like a Spectrum because Entries should reach us by September 13 The usual rules about the editor s decision being final and employees of ECC Publications being ineligible apply 1 1 1 E b nh Le Pinter than Septe omy to arrive not late SINCLAIRUSER September 1962 51 SPECTRUM 32K upgrade your 16k Spectrum to full 48K Easy to fit No soldering needed Full instructions supplied 32 39 95 Sound Amplifier and Tape Switching Unit Add on unit for your Spectrum Amplifies the sound output Separate tone and volume controls Eliminates hum loops when saving to tape Eliminates plug swapping when loading or saving programs on cassette No extra power supply required 550 22 50 Spectrum ZX81 Converter Use your ZX81 Rampacks and other 2 81 units on your new Spectrum in addition to your Spectrum
54. btains but in some cases That means that where nothing had been Sinclair is not obliged to disturbed inside the Science dominates contest ENTRIES for mathematics printers went to Dave and science applications Fisher of Coventry in the dominated theeducational primary maths science software awards organis section for Bomber to ed by Muse the educa Charles Rowbotham of tional computing associa Manchester under other tion There were more primary for Forensic than 100 entries but the under secondary maths s Science bias resulted in cience to John McMullan prizes being awarded in of Stechford for Forensic only five of the six under other secondary to categories Richard Mariot of Many of the entries Kenilworth for Bigspell have now been accepted and under other to Ian into the ZX 81 section of Souter of Tunbridge Wells the Muse library which for TLOG with nearly 50 programs No award was made in is now the biggest section the administration Prizes of Sinclair category SINCLAIRUSER September 1982 repairs might still be free That came to light after a reader wrote to Sinclair User of his experience Shaw of Basingstoke Road Reading wrote that like many other ZX 81 owners he had bought a full size keyboard The model re quired the removal of the computer board from its casing and fixing it into the new keyboard It was a great improvement and Shaw was very happy with his machine Then one day my
55. built unit is tested and comes with a money back guarantee Spectrum Keyboard and Case Kit 33 95 Our Mother Board for the spectrum has 2 slots at 15 95 or 3 slots at 19 95 this unit also fixes inside the case p amp p 80p SPECTRUM SOUND AMPLIFIER 5 95 80p p amp Complete with leads volume control and loud speaker in tough ABS Plastic case measuring 5 x 3 x 1 just plugs into your spectrum MIC T input D SPECTRUM PLUG PLANNER 18 95 100 p amp p Complete with 3 metres of cable three 13 amp sockets for TV Tape etc AND 9 volt at 2 amp power supply with power jack to fit Spectrum or 2 81 E The ever popular FD42 Keyboard and case for ZX81 39 93 including VAT amp Post FD42 as a kit 33 95 including VAT amp Post FD42 Built only 24 95 including VAT amp Post FD42 Keyboard Kit 18 95 including VAT amp Post GUARANTEED 14 DAYS DELIVERY FROM RECEIPT OF ORDER OR CALL TO THE ZX CENTRE Mail to FULLER MICRO SYSTEMS LT The ZX Centre Sweeting Street Liverpool 2 England U K Please Supply Name Address SAE for more details Enquiries Tel 051 236 6109 ZLAIRUSER FULLER FD SYSTEM September 1982 teaching software HE NUMBER of micro computers in schools is growing rapidly in both the secondary and primary sectors The increase in the use of micros in education has been stimulated by two things the part funding of the purchase of
56. cher clearing out current on going project files Other commitments prevent completion Satellite Documentation in the form of Original material photographic photostatic reproductions Computer listings programme cassette Incl Technical Descriptive literature buzzword jargon dictionary what s what who s who directory satellite disposition schedule dish antenna parabolic curve form generator A vast amount of facts figures etc giving a valuable insight into tomorrows boom business of the electronics industry Send cheque PO to the value of 5 0010 A J Innes 82 St Pauls Parade Cusworth Doncaster South Yorkshire DNS SPECTRUM AND 2281 SOFTWARE COSMOS Save Your fest from the marauding alena this new m e apace ds TABLE TUTOR complete menu drven tes homework and answer 3 QUARTET A compendium o putres and memory with up culis TRIAD Three now pussies to perplex ard estat Cube Supplied on cansatia SAE for catalogue VORTEX SOFTWARE 26 Crawiord Koad Matted Hertfordshire SINCLAIR ZX 81 16K RAM 9 months old complete Excellent condition 80 Marmer Whitehall Cottage Rhodes Minnis Canterbury Kent 6YA Tel Lyminge 862604 WANTED WANTED Top quality 16K 2 81 and Spectrum programs Mighest commi paid Please send taj
57. ct READ DATA arguably unnecessary in real life but part of school syllabuses and easy entry at machine code level have also been quoted as precluding its effective use 1 would not go so far with the 7 81 one can emulate those facilities adequately enough to allow the necessary demonstration and exploration Certainly many schools had no choice but to use this micro as the basis of much if not all of their practical work Still we now have the Spectrum easier to use and more versatile and reliable and not much more cost ly That is indubitably able to meet all formal school needs to advanced level and once the Microdrive and network interfaces are available is almost certain to become the main micro for everyday use in British schools SINCLAIRUSER September 1982 teaching hardware is an bk Again it plugs rear of the RAM I O sternal connections output are via 2mm the range 05 59209 eero 11 i Lau 56613 931534 GaTaWassy ATINA AMOWSIW NO Gay 3AISSVIW X91 SDINOUL 0 3 ped ped pase 2 0852 SINCLAIRUSER September 1982 continued from page 9 Which to show i ZX 81 may be pro emulate every aspect one may wish to awareness classes T or Spectrum with pri even b
58. ctrum and 2 81 including BREAK IN get ROM Routines Hints and Tips into h any ZX81 auto run program em Booklet 2 00p Vj What Can Do with 1K Bee AN The ZX80 Magic Book f Mastering Machine Code on your ZX81 2 STEROIDS 2X81 only ALL PRICES INCLUDE P amp Raquel Welch 4 95p sw Rer rcr Be ese ELECTRIC PENCIL COMPANY TIMEDATA LTD Dept 57 Swallowdale Basildon y Mount Vernon Hull Essex SS16 5JG Tel 0268 411125 MON FRI N Humberside Tel 0482 825234 Y Trade enquiries welcome THE BEST ZX81 BOOK Ifyou ave a SincisirZXB1 and want to useit toits fullpotential documented programa the Eras of gaming information retrieval sad education as weii as COMPANION Far and away thebest once again Linsac has produced the hook forthe serious and af tha mart Your Compute November 1981 The 2X81 Companion a most professional product with many good istrative programa toe and Warnings ducation Equipment October 1981 Bob Maunder s attempt to show meaningful uses of the machine ie brilianty successful thoughtfully written detailed took is definitely an outstandingly useful second step for the 2 1 user Educational ZX80 81 Users Group Newsletter September 1987 Bob Maunder Send your cheque for 7 95 includes UK p amp p to LINSAC 68 Barker Road Linthorpe SU eu 1884090721101 1 Price 7 98 SINCLAIRUSER September
59. d by NEWLINE then slowly increase the volume of the recorder with the tape running until the television screen shows four or five thick horizontal black bands If you then re wind the tape the program should LOAD normally Finally a health warning Apart fr m any practical uses computing with your ZX 81 can be a very enter taining hobby and is almost certainly habit forming You may easily find yourself crouched over your machine red eyed in the early hours of the morning thinking that in another five minutes you will sort out the problem Try to break that habit by getting into the fresh air and meeting other Sinclair users By obtaining a ZX 81 you find that you have joined a not very exclusive club with many thousands of members many of whom would be only too happy to advise you if you have difficulties Make sure of your regular copies of Sinclair User and Sinclair Programs and you can be guaran teed many happy hours with your Sinclair machine 23 TURN YOUR ZX81 INTO CASH Send details of your equipment with S A E for latest prices why start with 1k Buy secondhand and get more for your money 2 815 RAM packs etc S A E for prices list SECONDHAND SINCLAIRS 23 The Bourne Brimscombe Stroud Glos GL5 2RP 24804 SOFTWARE NIGHT GUNNER Enemy aircraft approaching from the rear Can you detend your plane against enemy attack Beware the more you shoot down the faster they get An exciting
60. e The MIS scheme has always had its critics among whom are of course Sinclair users It has been claimed frequently by teachers that despite the exclusion of Sinclair from the original scheme there are more ZX 81s in use in schools than all other micros com bined Cost is the reason as much as anything else one can buy six ZXs for the price of the cheapest version of the machines in the scheme The inclusion of the Spectrum in the Government list of machines ap proved for support in primary schools is of course a victory for Sinclair and a recognition of com monsense arguments Does it imply that Sinclair micros are not suited to work at secondary level and above I would like to reject that implica tion by looking at the educational uses of micros at all levels The question to air must simply be whether the ZX range can cope with educational needs If the machines can their remarkable cheapness is an added bonus in that several can be used instead of one larger machine Educational uses can be broken down into a number of categorie Computer awareness the aim being to maximise familiarity with computers their use their uses and their abuses Many schools include at least a few hours of such work in general courses followed by all pupils Computer studies the use of computer hardware as the ap paratus of the formal examination orientated computer science teaching Computer assisted learn
61. eogame from movement The four ghosts the U S has hit the move from the central Sinclair scene with a areaoneafteranotherand vengeance Not content roam the maze in search of with having a book and their prey Eating the even a hit record about it dollar signs in the corners no fewer than three makestheghostsediblefor companies have de a short time but Babtech own normal unpleasant veloped versions for the warns that they are and dangerous self 16K ZX 81 slippery creatures and from which to choose to moving randomly round The DJL Software Zuck may pass youifyourush at keep you on your toes the maze B means you man is written in 10K of them The 4K machine code have eaten a corner machine code and has all You have three lives but Zedman is complete with power capsule and the the addictive features of if you find it all too easy Spacers invaders type ghosts are vulnerable the original within thelimi you have 10 skill levels program giving two inverse B means they are tations posed by the ZX 81 about to turn nasty again character set You are the 4 5 Written in 5K of gobble man 0 being Pl t b machine code the game Playing at business x ne sm inverse commas as you mazeman if you score make your way round IF YOUFANCY yourselfas a profit at the end of 10 000 points Mazeman 29 21 maze eating the financial whizz kid test firstyear Inthenextyear costs 4 45 from Abersoft dots in your path your ski
62. escription Who wrote Robinson Crusoe Which novelist do you associate with Father Brown Cassette E2 Fun to Learn serie English Literature 2 ICL Hardware required 2 1 16K RAM Price 695 Programs Poets Playwrights Modern Authors Description Who wrote Song of the Shirt Which playwright also played cricket for England SINCLAIRUSER September 1982 B ion A nk gh Cassette Fun to Learn series Geography 1 ICL Hardware required 2 81 16K Price 6 95 Programs Towns in England and Wales Countries and Capitals of Europe Description The computer shows you and list of towns You locate the towns correctly Or the computer challenges you to name a pinpointed location Cassette E4 Fun to Learn series History 1 ICL Hardware required ZX81 16K Price 6 95 Programs Events in British History British Monarchs Description From 1066 to 1981 find out when important events occurred Recognise monarchs in an identity parade Cassette E5 Fun to Learn series Mathematics 1 ICL Hardware required ZX81 16K Price 6 95 Programs Addition Subtraction Multiplication Division Description Questions and answers on basic mathematics at different levels of difficulty Cassette E6 Fun to Learn series Music 1 ICL Hardware required ZXB1 16K RAM Price
63. etter and at AASE economic prices have put the ZX 81 at the top of the class according to informed sources in the field of education Reasonably priced hardware must be the criterion when an education authority or buyer in the profession is buying a system It must also be versatile and easy enough too for primary school and senior school use That permits more children to benefit from a number of economically priced machines than only one more expensive type serving fewer students Also the lower priced systems release more money for peripherals such as Tony Dutton looks at the expanding market for hardware add ons available for primary and secondary schools Peripherals can boost uses in education VDUs and printers From the summer of 1981 just a few months after the introduction of ZX 81 Sinclair had already planned to chalk up the education market on its blackboard of success Following that line of thought it mounted highly successful subsidised computer purchase scheme for U K secondary schools The result was that more than 2 300 schools took advantage of the offer to buy one range of the interfaces supplied by Griffin and George 12 ZX 81 and 16K RAM pack each at half price In all approaching 20 000 ZX 81s have been sold to schools at normal and subsidised prices making it the most widely used computer in U K education The company developed its commi
64. ew keyboard template and operating manual At 19 95 the chip provides all the features of the ZX 81 except graphics If however a graphics facility is required on the ZX 81 the graphics mode function on the 40 key keyboard allows 20 graphical and 54 inverse video characters to be entered directly Recently Griffin amp George intro duced two new interfaces for the ZX 81 They interface the computer to external peripherals so that the system can talk to the outside world Simple programs permit control of equipment such as motors lights and buzzers Even conventional lab oratory experiments can be moni tored data collected and manipu lated by the ZX 81 Results can then be displayed in graphic or numeric formon the TV screen or printed out permanently using the ZX printer Three interfaces are available The first the RAM I O Pack plugs straight into the expansion port on the back of the ZX 81 It contains SINCLAIRUSER September 1982 4KB so reasonably programs can be written without running out of memory space In addition to that memory the unit has a separate 8 bit input and 8 bit output port complex That port can be accessed directly from the ZX 81 Basic without the need to use the machine code routines to input and output information The eight input and output lines along with a 5V and ground line are taken to two inde pendent 10 pin connectors on the rear of the module The output lines are c
65. f money and various spaceships and knack can soon be it helps to have pen and excitement is added by the acquired Zuckman costs some paper to keep track capacity of the Swordfish 5 95 from DJL Software 9 of cost forecasts rent and to surface and dive to Tweed Close Swindon other vital factors avoid enemy fire Wiltshire The games cost 475 An especially good des In the Babtech Zedman each and are available truction sequence com youare a mouse in a 19x19 from CCS 14 Langton pensates for the mis maze the standard cursor Way London 7TL continued on page 46 SINCLAIRUSER September 1982 45 continued page 45 cannot guarantee it will fortune of suffering a work for you direct hit The instructions The game is in three a little confusing at parts so that it is in effect first but stay with it It a 48K saga with plenty to costs 5 50 for the ZX 81 keep you absorbed to the version end The complete thing There are outstanding costs 10 50 Both games graphics in Trader too are available from Pixel many of them animated Productions 39 Ripley and the story Gardens London SW14 original and entertaining Gases of Go Aste hohe You are an intergalactic based mainly on graphics trader trying to make a called Revenge of the depicting fiendish dangers EE Adventurous s picting are lively and because the hazard is a random one the suspense builds up especially whe
66. for machine They include the 2385 MEMBERSHIP 24line user portwhich The other part of our allows you to have 24 indi offer involves the range of FORM vidually controlled lines software from Carnell ee 0 Normally it costs 16 50 Software Members I wish to join the Sinclair User Club and enclose but club members can save 25 percent of the my subscription of 12 obtain it for 14 90 normal price of the three Nine including VAT cassettes sold by Carnell Two items which have That reduces the cost of Address beenproducedforthetime the Volcanic Dungeon when the Microdrive is Hangman from 4 50 to 00000000000 nn ready towards the end of 3 40 and Alien Intruder the year are also being and Wumpus Adventure offered A ZX mother from 5to 3 75 Allprices board which normally include VAT costs 16 95 is available usual to permit Which computer do you own 15 25andaZXstack members to take ZX 810 Spectrum O able connector costing advantage of these offers dd Coupons Wi Sacla Usar Ghib pes will cost members ECC Publications 30 31 Islington Green London Kempston s other major application A form is 88 Cheques should be made payable to product its 41 key click printed below L Sinclair User Club E SINCLAIRUSER September 1962 47 sidering which computer keys to buy next To win the player has to In the game an knock out 10 aircraft
67. gether all ZX equip ment in a neat working package a desk console is supplied by G amp G It provides security as all the pieces arestuck on the console so that they Desk console are difficult to remove and it can be seen at a glance that all equipment is present pieces are stuck with double sided tape which prevents bad con nections and prevents the equip ment moving The unit can also be transported easily between class rooms The console accommodates a ZX 81 computer 16K memory ex pansion unit ZX printer power supply cassette recorder cas settes and pens and pencils Elec trical connections are made through the console via 3 5mm jacks New From Fuller FD System for the ZX SPECTRUM 39 95 2 50 p amp p Professional Keyboard amp Case This unit has the same high standard as our ZX81 unit Tough A B S Plastic case encloses our Keyboard the Spectrum Printed Circuit Board and the Power Supply Our own Power supply is available 9 volts DC at 2 amps Mains either 110v or 240v AC at 5 95 80p p amp p The Keyboard has 42 keys with all the spectrum functions printed onto them the full travel key switches have gold plated contacts and a guaranteed life of 10 operations INSTALLATION Simply unscrew the ZX printed circuit board from its case and screw it into the FD case plug in the keyboard and that s it No technical know how or soldering required the
68. goal against the sharp shooting 2 81 GOLF judge your shot strength angles bunkers plus machine code insect fun with SWAT PACK2 Physics O Chemistry O C Biology O 7 50 50p p amp p Maths O Pani 5 50 p amp p JUNIOR SCHOOL PACK 10 00 50p p amp p Contains 1 Teachers also suitable or sec schools 450 2 New improved version of JUNGLE MATHS One of the best Junior programmes 5 Minster available B J Lancaster 2450 Gardens 3 MAGIC SPELL A versatile Newthorpe spelling test program 450 Eastwood Notts PLANET DEFENDER blast aliens in planet orbit utro dynamic machine code action hostile alien waves last responsive controls ship up down thrust laser bolt and smart bomb comprehensive scoring esplosive graphics explosive price Planet Defender comes on cassettes for ONLY 3 85 with machine code STORM FIGHTERS combat 5 fleets of swooping aliens as you blast through space BREAKOUT machine code race against the clock plus GRAPHIC HANGMAN 16K 2 81 cassette packs 1 and 2 3 05 each post free in U K Fast despatch trom o gt 7 John Prince 29 Brook Avenue Levenshulme Manchester M19 1 VARS for B B C SPECTRUM The ultimate SINCLAIR ZX 81 16K DATABASE FILING SYSTEM by DALE HUBBARD Fed up with boring games make
69. he fault can be ascribed only to the power pack which seems unable to cope with the printer for LLIST of more than 1K programs My only solution at present is to copy long pro grams screen by screen with a long cooling period between each screen copy Marion Stubbs Southampton Sinclair Research says SINCLAIRUSER September 1982 that it has never met this problem previously but thinks it might be due to a heat sensitive component ineither themains adaptor or the computer Do readers have other sug gestions Contact made with flicker THANK YOU for the machine code survey but I make two points A tip When typing in programs if the machine is in FAST mode the screen flicker tells one if a key has made contact more cheaply than buying beep systems and just as effectively The only thing is not to forget to revert to SLOW before SAVING or you might produce a blank screen when the program is RUN I want to know more about what machine code does I want a better feel of what an address means not just jargon by way of definition I want to get behind the feel of hex and the mnemonics so that I can understand what I am doing So how about some articles from people who can communicate their knowledge before I go out and buy another book I want to be sure of under standing what I read RevRJRedrup Truro Cornwall Thank you for your com ments on machine code and we will be tryi
70. he technical side By the late 608 terminals were entering some schools and in 1969 Deeson wrote an article on the impact of computers in the next decade He describes it as more of a sci fi piece than anything else and even he could not have foreseen the microchip but the potential even then was exciting and it is the potential which still intrigues him I much prefer teaching computer awareness courses The examinations try to include technical facts as well as concepts but it becomes very difficult because those facts are changing all the time SINCLAIRUSER September 1982 When the Sinclair ZX 80 emerged it was very exciting because at last schools could have computers in sufficient quantity for them to explore It was a very crude computer but it had advantages over the 2 81 and the Spectrum because of its very simple range of facilities The other two are very sophisticated but particularly in junior schools the keyboard is a problem I believe Sinclair greatness lies in the fact that one key has many functions Deeson owns all three Sinclair models as well as a BBC home education machine and an Acorn Atom They are indispensible to him for his work enabling him to develop programs write reviews SINCLAIRUSER September 1982 and produce books It is really en couraging to find that my children and all their friends love playing with the computers When the Spec trum arrived I could no
71. he London N1 8 latest montly from ECC Publications 6 pioneers of Practical Computing WHICH t COMPUTER and Computer amp Video Games Whether you bought your system Subscription Order Form yesterday or are an old hand you are probably I wish to start a subscription to Sinclair User an enthusiast for your machine ad your biggest understand that 1 may cancel my subscription at any time problem is likely to be obtaining all the and you will refund the balance information to satisfy your interest Sinclair 1 0 Lenclose a cheque for 9 for 12issues U K only User is devoted to quenching your thirst for including postage information As the name suggests the content is geared 3 Pest noe ey specifically to helping you the user There CerName pages of information on available hardware Address and software Our aim is to make Sinclair User invaluable and we chronicle applications which are of special interest Date l 50 SINCLAIRUSER September 1962 competition Win a ZX 99 by filling the screen Our competitions have proved so popular that we are to continue them despite having awarded the last of our printers in last month s contest the winner of which will be announced next month We have decided to continue our policy of offering major prizes and this month we will be giving 1 MS a ZX 99 t
72. hine by pulling out the power plug for a second and try tuning in again If still nothing appears check the power supply unit by shaking it If it rattles return it If it is satis factory check your system with that of a friend Once the K appears you are ready to begin learning about the ZX 81 It can save family arguments if you can afford a separate television set for your system It also makes life easier if you can find somewhere to leave your equipment set up per manently You will find that a few power sockets are needed and a four way block connector on a short length of extension cable will help to SINCLAIRUSER September 1982 tidy trailing leads The manual is written in great detail and is reasonably easy to follow Some of the chapters may not seem immediately relevant but it is worthwhile reading them as you might miss something which is important Patience is needed at that stage to learn the ways in which the computer will accept information It is tempting to try to enter programs before you are really ready but that is likely to lead to errors For example words like AND THEN and AT should not be typed in letter by letter By the time you have reached chapter 11 you should have accumulated sufficient know ledge to be able to type in other people s programs such as those in Sinclair User and Sinclair Pro grams without too much difficulty Itisimportant that when using the machine it is not jolted
73. ic Ching Mastermind Robots Basic Hangman PLUS Large screen versions of Invaders and Maze of Death Ready for when you get 16k Cassette One costs 3 80 CASSETTE 3 8 programs for 16k ZX81 STARSHIP TROJAN Repair your Starship before disaster strikes Hazards include 5 asphyxiation radiation escaped biological specimens and plunging into a Supernova STARTREK This version of the well known space adventure game features variable Klingon mobillity and graphic photon torpedo tracking PRINCESS OF KRAAL An adventure game BATTLE Strategy game for 1 to 4 players KALABRIASZ World s silliest card game full of pointless complicated rules CUBE Rubik Cube simulator with lots of functions including Backstep SECRET MESSAGES This message coding program is very txip qexi jf MARTIAN CRICKET A simple but addictive game totally unlike Earth cricket in machine code The speed is variable and its top speed is very fast Cassette 3 costs 5 CASSETTE 4 ZX SCRAMBLE machine code with 3 stages Bomb and shoot your way through the fortified caves 8 games for 16k ZX81 GUNFIGHT machine code INVADERS machine code GALAXY INVADERS machine code Fleets of swooping and diving alien craft to fight off SNAKEBITE machine code Eat the snake before it eats you Variable speed very fast at top speed LIFE machine code A ZX81 version of the well known game 3D TIC TAC TOE Basic P
74. imilar to Basic plot unplot commands Contains 2K EPROM monitor with full range of graphics subroutines controlled by machine code or USR function MEMOPAK CENTRONICS TYPE PARALLEL PRINTER INTERFACE Main Features Interfaces 2 8 and parallel printers of the Centronics type Enables use of a range of det matrix and daisy wheel printers with ZX8I Compatible with ZX8I Basic prints from LLIST LPRINT and COPY Contains firmware to convert ZXBI characters to ASCII code Gives lower case characters from ZXBI inverse character set RAM Please make Price No Toll 7900 Coming Soon HERES GRAPHICS cheques payable to 88 70 10 30 VAT lese CENTRONICS UF MEMOTECH Lid 32K RAM 43 43 s 66 49 95 5980 39 99 complete range of ZX81 plug in penpherais Digitising Tablet RS232Interface AcceseiGarcinyca E TOTAL ENC We regret we a orders or enquiries co ducts but we ll let you know as soon 5 yet unable to ac cerning the above We want to be sure you are satisfied with your Memopak so we offer a 14 day money back Guarantee on all our products Memotech Limited 3 Collins Street Oxford OX4 1XL England Tel Oxford 0865 722102 Telex 837220 Orchid G SINCLAIRUSER September 1982 a LTEXT AND 2 2X81 WORD PROCESSORS ZX Spectrum 20 Programs
75. ing in which computer power is one of the many resources available for R EPORTS are appearing that Sin SINCLAIRUSER September 1982 education uses Although omitted from the Government support scheme Sinclair is making an impact in schools Keith Jammer investigates Cost boosts the use of ZX maximally effective teaching in most subjects Administration with the com puter aiding the general running of school as in the case of any other business Data capture and process control again helping as in any other relevant business with equipment interfacing Computer awareness concerns the provision of courses and ex perience designed to make all future itizens familiar with computers and their strengths weaknesses It is surely potentially the most important aspect of work in primary schools as well as at secon dary level all other applications af 81 in education fect only the minority of pupils but this is essential for every one It is also important in the sense that it can and must involve a large proportion of the staff of a school at the moment there are surprisingly few teachers who know much about computers Computer awareness almost ex plicitly excludes hands on ex perience and programming skills Many schools with no computer power available have developed successful schemes of this nature in the last few years It is a pity that happens and now
76. ing is adventure games on which I have received some very interesting comments First Anagram and Crossword both on one cassette and sent for review It is obtainable from Warren Newman 3 Thalia Close Greenwich SE10 9NA The tape arrived with a brief description about both games Crossword was difficult to load with the volume level critical but that is common and is something ZX 81 owners expect Newman s letter says It is so far as I am aware the first electronic version of a crossword puzzle I am not sure about it being the first but they are not very common One reason is that they can be done only once apart from changing the clues and answers nothing else can be done when you finish it You need someone else to make up and type the crossword otherwise you will know the answers For the same reason you must not list the program or the answers will be shown and the puzzle ruined I SINCLAIRUSER September 1982 It has a fast response time using the fast mode of the ZX 81 and uses the screen well One point is that there is an option to display the crossword If you did that surely the whole puzzle would be ruined The clues are related to ZX 81 computer terms and so will appeal to enthusiasts On the Bside of the tape Newman money and if you like that kind of puzzle you will like these programs My thanks also to Leo Amatino who looked at these games and gave unbiased remarks I w
77. ing overleaf was Officer Trevor Walhen coming even better with the 2 81 He has had his ZX 81 He adds that he had since March and had a ordered a 16K RAM pack 2 ff K 1 ZX 80 previously from Sinclair Research DPC Kempston nis an el butas it had not arrived tronics engineer in the heusedtoborrowonefrom Royal Navy in which he a colleague who also had pectrum add on did not start takinga deep He sent his first pro CONTINUING the policy interest in computers until gram to Sinclair User in we began last month we he saw a colleague witha May but while he was in are again making two ex ZX 80 the South Atlantic he clusive offers to members STAR I read about them improved it twice before of the Sinclair User Club BARGAIN when they were first on he submitted the final This month it involves sale but 1 was not really version which is printed Carnell Sofware and interested until here and titled HMS Kempston Electronics and saw what it was cap Hermes It takes 5K of To link with the start of able of doing Walhen memory our new Spectrum User keyboard is also available says Because of its topica section we are offering a in this exclusive offer to When the Task Force lity great interest was discount of 10 percent off members The normal moved south he took his continued on page 48 the add ones developed by price is 26 50 but mem Kempston for the new bers can obtain it
78. ion sions monitor 8 75 dis Mountbatten Road Brain tronics parallel port plus of machine code programs assembler 6 50 char tree Essex CM7 6 Tel driving software to run into bytes on which the acter set 6 50 assembler 0376 26048 printer The 32K RAM Z 80A can run 6 50 a user manual is PETE RK costs 49 95 Hi res Together they make provided with each Memotech 61 80 Centronics port very powerful machine Taurusisat47HighStreet 1 41 90 code facility which is Baldock Herts SG7 680 101 Memotech Ltd 3 Collins available at switch on by Tel 0492 893900 MEMOTECH has added street Oxford OX4 1XL using a USR routine The 1 three new black boxes to Tel 0865 722102 board fits underneath the Gordon its range A hi res board Keyboard and resides in b d 192 x 256 pixels can Mansfield the memory from 8K 16K eydoar have its memory page any Thereisalsoawordpro GORDON Electronics has where in RAM and it can Printer paper cessing EPROM 4 which produced a keyboard in also have more thanone of MANSFIELD Computers will provide up to five case which requires no the 6 5K pages stored and Electronics now sup character sets including solderingtoattachittothe in memory for rapid plies printer paper at lower case characters ZX 81 The pins provided graphics Thehi rescanbe 10 95 for six rolls as well The monitor dis the end of the ribbon used with any of the as soft
79. its long dripping tongue to slide out and if a fly is caught on its tip the tongue is retracted and the player scores 10 points There are two snags One is that the flies reduce speed when they see the tongue moving in their direction The other is that the tongue cannot be retracted until it bags the blue bottle missing causes it to hang helplessly until another victim strays into its clutches You lose one point for every fly which starts and the game ends when the tongue touches line 16 without catching anything Graphics notes M Graphic W graphic 6 graphic I YOU like creepy crawlies you m Graphic Q graphic R graphic 90 Space shifted shifted 190 Graphic 5 SINCLAIRUSER September 1982 programs PRINT AT 0 10 PRINT AT 1 18 3 THEN 1 gt 4 pois THEN ir INKEYS P THEN GOTO 180 IF Big anD D114 THEM GOTO gt 16 THEN STOP Goro 19e 27 28 6 Niel explains the 068 rung 40 wee tei in the hope of shifted 7 Eo shifted 5 shifted 5 reaching A sed or sghtandleftand 70 Graphic shifted spaces wo graphic shi ills you andafter spaces EO shifted W 12 graphic partof out of me 90 shifted 5 u INDOU CLEANER 4 PRINT cu Hi Beni ARNO S AND Ste r T
80. ity MULTIGRAPHICS 2 3 RAM o OFTWARE 3 FERNWOOD MARPLE BRIDGE the BEST yet from M C Associates PELOPONNESIAN WAR a brand new 16K game Your ultimate goal is a final victory over the Spartans but you will need to deploy all your skill in a combination of diplomacy and military force before you even stand a chance Price 5 95 also TYRANT OF ATHENS Price 4 95 ROMAN EMPIRE Price 5 95 Buy more than one cassette and deduct 50p from the price of each Cheques or POs please made payable to M C ASSOCIATES 4 GRANBY ROAD CHEADLE HULME CHESHIRE SK8 6LS 20 AGOGELERS PUCKMAN FOR 16K ZX81 BEAT THAT HIGH SCOREI GOBBLE THOSE DOTS BEFORE THOSE MEANIES GOBBLE YOU YOUR ONLY AIDES ARE FOUR POWER PILLS WHICH MAKE THE MEANIES EDIBLE BUT NOT FOR LONGI MACHINE CODED FOR FAST ACTION XTRA GOBBLER FOR 10 000 POINTS IN SCREEN SCORING IGH SCORE WITH ENTER NAME FACILITY UP TO 4 PLAYERS AN ANNOYINGLY FRUSTRATING GAME FOR ONLY 5 95 eROIDS FOR 16K AN OFFER FOR REAL MASOCHISTS BOTH TAPES FOR 9 95 MAIL ORDER ONLY PLEASE MAKE CHEQUE PO PAYABLE THE SOFTWARE FARM ZX81 16K LOTHLORIEN COMPUTER GAMES New release Warlord 4 95 game set in 13th Century Japan Can you rule a warring village to survive for 30 years Can you defeat the a
81. layed on a 4 x 4 x 4 board this is game for the brain it is very hard to beat the computer at it 7 of the 8 games are in machine code because this is much faster than Basic Some of these games were previously available from J Steadman Cassette 4 costs 5 Recorded on quality cassettes sent by first class post from Michael Orwin 26 Brownlow Rd Willesden London NW10 9QL mail order only please Nigel Clark Consultant editor Mike Johnston Production editor Harold Mayes MBE Design William Scolding Editorial director John Sterlicchi Advertisement director Simon Horgan Advertisement manager John Ross Editorial production assistant Margaret Hawkins Managing director Terry Cartwright Chairman Richard Hease Sinclair User is published monthly by Publications Ltd It is not in way connected with Sinclair Research Ltd Telephone All departments 01 359 7481 If you would like to contribute to Sinclair User please send typed or beautifully hand written articles or programs to Sinclair ECC Publications 30 31 Islington Green London N1 8BJ We will pay 10 for each program printed and 50 for each article Which should be approximately 1 000 words long Copyright 1982 Sinclair User ISSN 0262 5458 Origination by Outline Graphics Printed by Eden Fisher Southend Ltd Distributed by Spotlight Magazine Distribution Ltd 1 Benwell Road Holl
82. le TV screen without the need for further instructions So now you can print out your results for a permanent record The ZX Printer plugs into the rear of your ZXBI and you can connect a RAM pack as well Games Cassette G1 Super Programs 1 ICL Hardware required ZX81 Price 4 95 Programs Invasion from Jupiter Skittles Magic Square Doodle Kim Liquid Capacity Description Five games programs plus easy conversion between pints gallons and litres Cassette G2 Super Programs 2 ICL Hardware required ZX81 Price 4 95 Programs Rings around Saturn Secret Code Mindboggling Silhouette Memory Test Metric conversion Description Five games plus easy conversion between inches feet yards and centimetres metres Cassette G3 Super Programs 3 ICL Hardware required 281 Price 4 95 Programs Train Race Challenge Secret Message Mind that Meteor Character Doodle Currency Conversion Description Fives games plus currency conversion at will for example dollars to pounds Cassette G4 Super Programs 4 ICL Hardware required 281 Price 4 95 Programs Down Under Submarines Doodling with Graphics The Invisible Invader Reaction Petrol Description Five games plus easy conversion between miles per gallon and European fuel consumption figures 54 Cassette G5 Super Programs Hardware required ZXB1 16K RAM Price 4 95 Programs Martian Knock Out G
83. lising in ZX learning products two of them AVC Software and Rose Cassettes are well established and successful The educational MUSE software Library administered by EZUG contains some 50 ZX cassettes after only six months more than are available for any other micro The first software and the first publication in the Spectrum market were both for education both from AVC Software The majority of all those products can be classified as computer aided learning material between them they offer assistance in 12 school subjects Eric Deeson of EZUG has estimated that a complete library of It has been claimed by teachers that there are more ZX 81s in use in schools than all other micros combined year olds can quickly produce pleasing routines I still bemoan the demise of the ZX 80 in fact it was remarkably effective even for advanced work and of course involved a less daunting task of keyboard familiarisation Having introduced the subject of computer club work i e the un structured playing with micros 1 can note yet another area in which Sinclairs deservedly reign supreme There is the added advantage that probably all schools have at least few pupils by now with Sinclairs at home The resulting facility of enabling school ideas to be developed at home is of great value So too conversely is the possibility of upgrading school facilities with 10 CAL programs covering the needs
84. lls with two new however we overspenton 7 Maesafallen Bow One of the reasons for business games from CCS staff and faced the Street Dyfed SY24 5BA the enormous popularity Airline has good animated prospect of resigning of Pacman is the way ho bar chart and histograms There are some pertinent hunter the and is full of unexpected decisions to be made and s one ofthe hazards the game provides a useful Pixel makes four corner energy were hi jat introduction to the posts the ghosts change PLO butmanagediomake business world and its USC of space their appearance and you terminology The aim of TWO INTERESTING new can then chase them and Airline is to take over space games both in 16K win bonus if you catch British Airwaysassoonas are from Pixel Produc them possible tions In Subspace Striker You have to be careful In Autochef it is to you are the captain of the as after a few seconds buy Trusthouse Forte by Swordfish which lurks in they revert to their old the judicious management hyperspace shooting nasty selves of a chain of restaurants down enemy vessels with DJL made an unusual and fast food outlets its deadly Antimat torpe choice of keys for There are three levels of does A fairly familiar movement Q and P for difficulty although even themeisenlivened by some left and right M and X for on the easy level we lost a splendid graphics of the up and down but the fair amount o
85. ly should be supported by comprehensive instructions in booklet form SINCLAIRUSER September 1982 ZX99 DATA PROCESSING The 2 99 gives you software control of up to four tape drives two for reading two for writing allowing merging of data files This is achieved by using the remote sockets of the tape drives controlled by USR statements or commands RS232C INTERFACE The ZX99 has an RS232C output allowing connecting with any such printer using the full ASCIIcharacter code you can now print on plain paper in upper or lower case and up to 132 characters per line at variable band rate up to 9 600 SPECIAL FEATURES There are so many special features it is difficult to list them all for example AUTOMATIC TAPE COPY You can copy a data file regardless of your memory capacity as it is processed through the Sinclair block by block TAPE BLOCK SKIP Without destroying the contents of RAM DIAGNOSTIC INFORMATION To assist in achieving the best recording settings The 2 99 contains a 2K ROM which acts as an extension to the firmware in the Sinclair ROM The ZX99 s ROM contains the tape drive operating system and the conversion to ASCII for the RS232C output There is an extension board on the rear to plug in your RAM pack larger than 16K if required The unit is supplied with special tape drive lead more are available at 1 each AUTOMATIC TAPE CONTROLLER FOR THE SINCLAIR ZX81 59 95 plus 2
86. m Migh Rd London 576 GAMER Bron GEORGES Bron St Brat Avons MICROSTLE Larson Ra Bath Avon MICROWARE SCREEN SCENE 11 Menon Ra Laces TA St Georges Ad Chetenham Gios WH SMITH Dew 200 Computer Branches ZEDXTRA 3 Schoo Lane Kran Bournemouth Dorset TRADE amp EXPORT ENQUIRIES WELCOME MOVING AHEAD WITH ZX SOFTWARE ZX CHESS amp ADVENTURES PROGRAMS FOR THE ZXB1 80 INCLUDING EM DCEORTH ol FORTH h ZX 10 28 Pap oh ig la Breer EIU 16K RAM PACKS RAM PACKS no wobble problems 1 year 23 50 guarantee on each RAM PACK The best you can buy IKZX CHESSI We dn f was possible but the game pays we 295 against you two opening moves only 1K of memory ZXCHESS machine code program with seve ot reduced 10 piy and an one oium ra er Sere move eden wi aane ute CHESS UL elena oy on eun ADVENTURES Encar machine code gres with responee ADVENTURES Coors from me range Vou fed Your ENTRE te ADVENTURE B in a jungle cieanng you come across an Inca temple E700 Yon m break colec and escape ave Beware Includes a cassette save routine You unfortunate enough to be drawn to ar cruiser Can you reach the control room and free Yourself or wil they get you frst includes a cassette save routine ADVENTURE 8 00 GALAXIANS Alv features
87. n safety is in sight Escaping before the oxygen runs out is problematic but not impossible The other adventure is profit on your wares while saucers such as falling boulders escaping a variety of pit Each side also features and bridges which close as falls on your journey from Synacroop more sophisticated youare about to jump on to moon to moon SYNACROOP Software adventure one of whichis them You will need nimble You willneedtodosome has produced acassetteof called Escape from the fingers the control keys quick thinking and ithelps four games allin16K Two Pyramid of Mars There and perhaps a practice io have pen and paper are short and simple the aim is to collect four game or two to earn a high handytokeeptabsonyour There is a two player keysfromthedepthsofthe score The cassette costs stocks We made a killing gamblinggame Upagainst pyramid without being 4 95 andisavailable from Synthomunch the wall and a annihilated by a myster Synacroop Software 63 kind of staple food popular straightforward shoot out ious flashing defence Cedar Avenue Cosely in the Meridien area but with alien spacecraft mechanism The graphics West Midlands ZX81 HEWSON CONSULTANTS ZX SPECTRUM HINTS AND TIPS FOR THE 280 OP CODES 145 20 BEST PROGRAMS FOR 2X81 by Andrew Hewson 3 95 THE ZX SPECTRUM 7 95 Them at he pre m av ANDREW HEWSON a PROGRAMMERS VA TOOLKIT
88. ng to deal with the points you make in future editions Better munch saves battles MY SONS and myself enjoy Sinclair User both for articles and programs which I input and they use The Monster Munch by Tim Hartnell May 1982 however almost resulted in a full scale war when one of them dis covered how to escape from the maze If you are at either side of the board you can escape using a two part instruction i e That transfers the to the E side of the board but the monster cannot follow Heis therefore safe so long he travels or S By adding the following I cut off that escape route 217 LET BS BS SPACE 218 IF BS 2 E AND P gt 9 ORBS 2 W AND P lt 2 THEN 215 Now the monster always munches Harold Cather Yate Bristol Appeal for pen friend I WOULD like a pen friend who has a ZX 81 with whom I can exchange programs and other things I can be contacted at Mollagatan 16 50246 Boras Sweden Magnus Nygren Mains filter advisers WITH REGARD to Paul Coker s letter in the July issue of Sinclair User Dis play Electronics has a mains filter which it recommends for com puters Further details obtainable from 64 66 Melfort Road Thornton Heath Croydon Surrey Tel 01 689 7702 TDawson Prestwick Ayrshire WITH REFERENCE 10 the letter from Paul Coker on mains spike suppression in July what is required is transient
89. ng to each other and enjoying their discoveries It all part of the learning experience Deeson is touching on the future of our educational system in his PhD but he is aware that for the majority of teachers projections even a decade ahead can seem little more than suspect and disruptive The majority of teachers like the majority of people still have no contact with computers They do not think about the long term implications 1 do not think they want to but I don t think computers will go away Deeson who is chairman of the West Midlands committee of the Association for Science in Education has so much work outside his school job that it would be fair to assume he was p nning to cease being a teacher soon That is not so Apart from the fact that I love teaching there are all these changes on the horizon which will affect schools as much as anything else The best part of it all is that I shall still be around to see them y Use your computer in the case Foam rubber gives complete protection Purpose built forthe ZX system ZX81 amp Spectrum Custom Cases Just 3495 Turn your ZX system into a portable computing centre Spectrum Send for your ZX Custom Case now could fcase he FREEPOST it card ne 0276 62155 Mon Fri 9 30 5 30 OMPUTEX CASES clair Research has succeeded in its campaign for inclusion in the Micros in Schools Schem
90. not handle data it is useless There is a solution to the problem but first let me explain that DATA and READ statements provide a method for declaring the value of variables at the time the program is written to save the user from ing the items at run time For example the lines 10 DATA 1 2 20 READ A B C will assign the values 1 2 and 3 to A B and C respectively every time the program is RUN The same effect could of course be achieved by using 10LETA 1 15 LETB 2 20LETC 3 The real power of DATA and SINCLAIRUSER September 1982 READ statements is that they allow the programmer to change the values of variables during execu tion For example 10 DATA 1 2 3 4 5 6 20 READ A B C 1000 READ A B C will cause B C to take the values 1 2 3 initially and then 4 5 6 at line 1000 Once again the same effect could be achieved using LET state ments and so the ZX 81 Basic pro gramming manual is correct in pointing out on pages 145 and 146 that READ and DATA are more or less superfluous instructions To prevent Perry jumping on his ZX 81 here is a method of simulat ing READ and DATA 10 PRINT INITIALISE CALCULATE OR SAVE LC S 20 INPUT 25 30 GOTO 10 40 Z T 190 Z 1990 Z S 50 PRINT INITIAL ENTER TEN SETS OF THREE CONSTANTS 60 DIM B 3 70 FORI 80 FORJ 90 INPUT 100 NEXT J
91. of children aged from five to 16 would need to contain upwards of 5 000 titles Any assessment of the validity of given micro for education must rest in particular on its ability to cope with the formal needs of formal computing courses at CSE level and above Those needs are two fold First the students have to undertake a fairly lengthy programming project assessed as up to one quarter of the marks for the examination Second they must have equipment available with which they can practise and explore the various concepts studied There is little difficulty with the project the student must By hind permission of Griffin and George demonstrate his programming abili ty and that will be restricted to some extent whatever machine he uses This year for the first time ZX 81s have been used for computing pro jects even at advanced level The equipment involved needs to be easy to use and readily available and must include a printer The ZX is by far the best in that context as it meets the requirements so cheaply that schools can readily have a fair number of keyboards available The aim must be at least one between each two students If one spends money on ZXs for formal school projects one must be sure that they also meet the needs of the theoretical components of the course The ZX 81 is only just about suitable there Its major lack is the ability to handle files meaningfully but its omission of dire
92. of he acorde ge in a fast machine 23 95 e Swooping attackers explosions and sergio seon ZXBUG Tir machine code tool and dase ows access to ali registers and 10 search through and modify memory with cassette routines and many more For a catalogue giving full details lease send a S A E to Artic Computing Dept EE 396 James Reckitt Avenue Hull HUB OJA 18 SINCLAIRUSER September 1962 TAS IN THE CROWD Clive Sinclair left Nigel head of Sinclair Research computer division in Festival half marathon The men s race was won by lan Thompson with Carol Gould coming first in the women s section ZX 81 price cut to keep sales THE PRICE of the 2 81 has been reduced to 49 95 It is believed that the move was prompted by the need to keep sales mov ing in Britain since there has been a big fall in the number of orders since the announcement of the Spec trum It was felt that the gap between the prices of the ZX 81 and the Spectrum was not big enough Sinclair Research has always maintained that there was a market for both machines Add on guarantee gamble ANYONE attaching add repair the machine should ons to their Sinclair anything go wrong A machines which require spokesman for Sinclair opening the case or remov Research said that once ing the keyboard the case had been opened automatically invalidates the guarantee no longer the guarantee o
93. of the forthcoming Microdrives and be easily portable With the cost of hardware falling steadily it would allow everyone at last to enjoy cheap high quality education in a form which is already achieving good results It all sounds too good to be true It is Schools are much more than places for learning the subjects which appear in the curriculum They are a major stage in learning social skills All children make friends in their neighbourhood but most friends are made at school They also gain by having contact with others from different backgrounds There are sufficient problems in the world caused by a lack of understanding between groups of people without increasing the divisions by removing an effective way of bringing people together Human beings have achieved their development through being able to co operate with each other to do things which would have been impossible individually Anything which reduces the ability to work together will work against that continued development With the swift advances which have already been made in computer aided education it is unlikely that the development will not continue At the moment however the problems of transferring learning to the home seem too great to be surmounted sinclairvoyance The best man for the jobs convincingly authoritative glare und announces In 10 years everyone will have a 10 computer and in 50 years there will be no need for scho
94. ols Such he believes will be the impact of computers on our lives and he finds the whole prospect exciting The 40 year old science teacher who happens to have written some 30 books and to be studying for his PhD is forceful in his views so forceful that my initial reaction was to wonder whether he might be an egomaniac He lives and breathes work and lets you know that he has a finger in almost every pie because his fingers are the best for the job The trouble was that after 90 minutes 1 believed him I too was convinced there was no better person to fill the role of head of science and computing at Highgate School Birmingham No better person to hold the five year honorary post of editor of Physics Education mind you even Deeson admits that is the biggest honour I have had in my life No better person to head the Educational ZX Users Group with its 1 500 members world wide and its boast of having the largest Sinclair software library in the world No better person to act as consultant to so many people in the field of computing or to lecture at their conferences or to squeeze time for his own PhD on the side Certainly he is justified in having six computers in his home although E DEESON fixes you with a moment Eric Deeson speaks to Claudia Cooke his three school age children can be a problem when they are programming with a vengeance when he needs to use the machines Deeson is pu
95. omputerised phrasebook al vases in common tage tape 65 80 or E 96 for al 4 Prices Include POP FRENCH LANGUAGE EDUCATION SYSTEM 6K Avatabe shorty Software Engneenng 30 Shanon fave Newent Nom TAX SAE tor 2X 81 16K RAM SINCLAIR BUILT Leads adaptor manual all boxed Hardly used plus computable ZX and phone pad etc 70 Write Harrison Flat 583 19 Newport Court London WC2H 748 ZX81 MEMOTECH 64K Cost 150 but will accept 1100 n 0 JD Peel 10 Croftlands Bigrigg Egremont Cumbria Phone Seascale 28333 ext 23393 in day PERSONNEL RECORD SYSTEM Controls records of holidays and sickness with management reports Menu driven Displays records on screen direct to ZX Printer High speed machine code save and load facility to create data files Two programs one cassette priced 9 95 Send cheque postal order to Warren Newman 3 Thalia Close Greenwich SE10 SNA SPECTRUM WORD PROCESSOR On screen edit insert replace scroll Word wrap justification fiie handling double space printing Cassette and manual 15 L GAME new based de Bono 5 Brian Hebbes Newlands Avenue Southampton 2X81 16k educational softwar ON YOUR MARKS Primary arithmetic in the form of games Five routines on one cassette accessed by menu selection Superb graphics enhancement Price 6 95 Computatu
96. ould like to mention another game I received on tape an unbeatable version of multiple pile Nim I say unbeatable in quotes because no one I have asked to play it has beaten it including me It has won some games and drawn some but has not been beaten a remarkable achievement With some of the rubbish pro grams on the market for the ZX 81 this program I think should be sold but the sender has plans to do so so far as I know My favourite type of mind game is the adventure type a game which is a total mind game like chess but with more fun and general appeal Adventures are the type of game in which you are projected into some castle forest and you have to solve some problem like finding the long lost treasure Along the way there are numerous problems and each has an exceptional solution Most microcomputer adventures have completion times of around a month The idea is derived from the large mainframe computers where large Crosswords can be done only once apart from changing the clues and answers nothing else can be done says that a standard game of Anagram is offered with three levels of play Again though the game was difficult to load but once in you can make a back up for your day to day use One thing about this type of game is that it becomes uninteresting after playing many games Again as in Crossword the screen is well used not all games make good use of the screen bu
97. oway London N 01 607 6411 SINCLAIRUSER September 1982 5 SINCLAIRVOYANCE Schools could soon be thing of the past We consider the dangers of this idea 6 PROFILE We speak to Eric Deeson who has firm views on the future of computers in education 9 EDUCATION USES Keith Jammer looks at the advantages of the ZX 81 compared to other computers in education 12 TEACHING HARDWARE A number of add ons have been produced for the schools market Tony Dutton investigates 15 SCHOOLS SOFTWARE Dave Sayers reports on how commercial software is helping to teach traditional subjects 19 NEWS Clive Sinclair runs in the Cambridge half marathon price cut for the ZX 81 and much more 21 YOUR LETTERS You keep us in touch with your thoughts on the world of Sinclair 23 STARTING FROM SCRATCH Our guide on how to learn to use your 7 81 27 PROGRAM PRINTOUT Eight more pages of our popular programs 37 HARDWARE WORLD Our reviewors look at what is new in add ons 41 HELPLINE Andrew Hewson looks at a variety of problems facing readers 45 SOFTWARE SCENE Pac man games have been produced for the ZX 81 in large numbers We assess some of the earliest attempts 47 SINCLAIR USER CLUB More news from our rapidly expanding club and a new offer to members 51 COMPETITION Another of our great competitions in which we offer 7499 53 MIND GAMES Anagrams and crosswords are considered by Philip Joy 56 SPECIAL OFFER We repeat our amazing offer of 20 off the
98. que postal order payable to Sinclair Research Ltd for __ Please charge to Access Barclaycard Trustcard account no Please delete complete as applicable Signature Mr Mrs Miss 1 Address l S zl SINCLAIRUSER September 1982 SQ S Mey are The computer pedore dt mum chet ax yo ant and duplas e amber ic cheques or ep SUL ZX 81 16K ADVENTURE GAME Full 16K used Plenty of Action map supplied plus detective game of Logic 2 4 players Both on cassette only 3 50 Taylor 2 Greenway Eltham London SES 552 SPECTRUM PROGRAMS BOMBER high quality sive basic program plus PAINTBOX sketch draw print save and load for cartoons displays etc 5 00 on cassette D R Pope 62 Cockereil Close Wimborne Dorset BH21 1XT SINCLAIR BUILT ZX 81 Bi pac sound box Original packing manual leads power pack 3 cassettes for 16K 2 81 companion 800 n 0 Phone Oxted 2834 EDUCATIONAL SOFTWARE X 36K 0 LEVEL FRENCH REVISION 3 tesch and test Grammar Drame piue 3 Vocabulary programa CE d Levit MATHS REVISION Tisach and tet program plu 2 programe M generated auestiora from 0 lev Seius th espana JUNIOR MATHS 1 Long Mulipieaton long Dison MGF LCM Factona 11 T 20 JUNIOR MATHS 2 Areas Peimete Simple Equavons Percentages Sets Venn Oigrams JUNIOR d
99. raffiti Find the Mate Labyrinth Drop a Brick Continental Description Five games plus easy conversion between English and continental dress sizes Cassette G6 Super Programs 6 ICL Hardware required ZXB1 16K RAM Price 4 95 Programs Galactic Invasion Journey into Danger Create Nine Hole Golf Solitaire Daylight Robbery Description Six games making full use of the ZXB s moving graphics capability Cassette G7 Super Programs 7 ICL Hardware required 2 81 Price 4 95 Programs Racetrack Chase NIM Tower of Hanoi Docking the Spaceship Description Six games including the fascinating Tower of Hanoi problem Cassette G8 Super Programs 8 ICL Hardware required ZX81 16K RAM Price 4 95 Programs Star Trail plus blank tape on side 2 Description Can you as Captain Church of the UK spaceship Endeavour rid the galaxy of the Klingon menace Cassette G9 Biorhythms ICL Hardware required ZXB1 16K Price 2695 Programs What are Biorhythms Your Biohythms Description When will you be at your peak and trough physically emotionally and intellectually Cassette G10 Backgammon Psion Hardware required ZX81 16K RAM Price 5 95 Programs Backgammon Dice Description A great program using fast and efficient machine code with graphics board rolling dice and doub ling dice The dice program can be used for
100. ren are taken through each stage of working the answer SINCLAIRUSER September 1982 As the ZX 81 becomes more popular in education more software is being written Dave Sayers tests a sample P rograms can help to brighten school days J Junior Maths 2 includes areas perimeters sets and Venn diagrams as well as two other programs The standard of the tape is really very high with good diagrams and instructions t was moreover a winner with the children Arithmetic for the under eights is a superb cassette dealing with addition subtraction multiplication and division The level can be set at units tens and units or hundreds tens and units The numbers are shown in large characters well suited to a classroom monitor and carrying is illustrated on screen in stages A really good worthwhile tape for classroom use well put together and like all the Rose software properly error trapped Junior Maths 1 and 2 and Arithmetic for the under eights look like essential buys for any school using the ZX 81 in the classroom I hope they will also be available for the Spectrum too The tapes cost 4 50 each and each cassette runs itself from loading The Fun to Learn cassettes available from W H Smith and direct from Sinclair by post at 6 95 per cassette were the to be ex amined Eight titles were reviewed continued on page 16 5 continued from page 15 Engli
101. rmies and samurai of other warlords challenging game where all results are dictated by your own decision SAMURAI WARRIOR Could you survive in 13th century Japan In combat with other Samurai Fighting bandit groups Assisting villages or will you commit ritual suicide Become engrossed in this game of skill for only 5 95 Cheques or POs please payable to LOTHLORIEN COMPUTER GAMES 94 Flixton Road Urmston Manchester M31 34D SINC AIRUSER September 1982 Over heating stops printer MY ZX 81 with 16K and printer arrived in mid May from Sinclair After two days I stopped 16K RAM wobble by putting a large tea tray into an old cushion cover The ZX 81 RAM and printer live permanently on the tray and there has never been any further trouble with wobble Nearly every time I try to LLIST a long program however the power supply pack becomes very hot and eventually the printer goes dead with white out on screen Moreover it does not come alive again for several hours i e until the power pack has cooled This is no glitch or mains fluctuation It happens at any time of day or night including 3 am and no printer for several hours Since my RAM pack is now free from wobble and anyway without touching anything except to unplug from the wall socket a memory test shows 16K available when switched on again after the cooling period t
102. rstand that am under no obligation to hire minimum number ol further tapes and that H m dissatisfied with my Arat tage you will refund my money in full and without question NAME ADDRESS Tel No Sinclair 2 81 1K 2 81 16K ZX Spectrum delete as appropriate STARTREK 4 95 16K STARTREK Exciting space adventure game including Klingons starbases phasors 8 8 galaxy 4 levels of play long and short range scanners etc SUPER WIMPUS 4 95 16K SUPER WUMPUS Can you hunt and catch the mysterious wumpus in his underground labyrinth Intriguing underground adventure GRAPHIC GOLF 4 95 16K GRAPHIC GOLF Try out your golfing expertise on the computer s golf course 18 different graphically display holes Hazards include lakes trees wind rough etc GAMES PACK 1 4 95 16K GAMES PACK 1 Fantastic value for money nearly 50K of programs on one cassette Five games including Real Time Graphic Lunar Lander Starwars Hammurabi Minefield Mastermind SILVERSOFT Dep 507 35 Bader Park Bowerhil Melksham Wiltshire SINCLAIRUSER September 1982 ZX Educational Software Spectrum Junior Education 5 50 Use your Spectrum to help your children with their school work This cassette contains eight attractive easy to use programs for the 7 to 11 age group Topics include English comprehension spellings homophones junior science math
103. s and history Entering your own questions and answers allows you to adapt two of these programs for exercises in any subject area Moving colour graphics and sound are extensively used to improve motivation Suitable for 16K and 48K machines User documentation supplied with the cassette O Level Chemistry C1 5 50 This cassette contains four clearly presented revision tutorial programs The subject matter has been carefully structured to cover the most important aspects of Elements compounds and mixtures Structure bonding and properties Redox electrolysis and the activity series Acids bases and salts 48K Spectrum and 16K 2 81 versions of the cassette are available Please specify which you require Professional Computer Assisted Learning materials from CALPAC COMPUTER SOFTWARE 108 Hermitage Woods Crescent St Johns Woking Surrey GU21 10 Overseas orders 6 50 11 60 per cassette includes AIRMAIL postage X81 16K SOFTWARE ZX ARCADE ACTION NEW MUNCHER 5 95 At last Pacman for your ZX 81 all the arcade features plus software for the QS character board SPACE INVADERS 4 95 Simply the best yet the closest thing to real Invaders on the ZXB1 Full arcade features including 1 or 2 player option and Software to drive the OS character board ASTEROIDS 5 95 Authentic representation of the arcade game including L R thrust and fire controls 5 levels of play and
104. s of Learning to Use the 2X Spectrum 24 hour answering service Telephone 0252 510331 2 5 5 95 Name Learning to Use the 2X81 7 5 95 Please send __ copy iesof Byteing Deeper into Your 2X81 6 45 20 Simple Electronic Projects for the ZX81 745 Mastering Machine Code on Your 2X81 850 The 2X81 Pocket Book 6 95 Read Out 1 Address KAYDE Electronic Systems ZX80 1 ZX KEYBOARD WITH REPEAT KEY Fully cased keyboard Uncased keyboard Keyboard KA YDE FLEXIBLE RIBBON CONNECTOR j Stops movement of RAM PACK and other accessories Not needed with a KAYDE RAMPACK vay 95 KAYDE 4K GRAPHICS BOARD amp NO EXTRA POWER NEEDED KAYDE 1 6K i ale ny sae SPET WARE ly Dept SU Kayde Electronic Systems Ltd The Conge Great Yarmouth Norfolk NR30 Tel 0493 57867 Dept SU Don t Forget you can always order on the telephone with your credit card All products include VAT all hardware Please add 1 50 PP for hardware and 0p forall software comes fully built and tested with Please make cheques payable to Keyde Electronic Systems Ltd a 14 day money back option
105. same type as for till rolls and the ink cartridges are easily available All graphics are printed The printer costs 65 Mind ware is at 70 Boston Post Road Wayland MA 01778 U S A ZXED is now _ Mitdware printer characters and replace on EPROM them A help instruction is ZXED d Ktronics Basic also included giving in editor is now available on structions on using ZXED EPROM for those with the 4K EPROM is in the graphics board from the RAM socket provided on same firm Instead of a the graphics board and long wait for the cassette does not affect the use of to load it is available in the other EPROM The cost SINCLAIRUSER September 1982 of the EPROM is 9 95 from d Ktrontics 23 Sussex Road Gorleston Great Yarmouth Norfolk A key board is also available for the Spectrum complete with numeric pad for 30 plus 15 for the case but you have to add 1 50 for postage and packing ZX 81 tests the temperature CHESHIRE Micro Design has produced a tempera ture sensor for the ZX 81 The device called the ZR3 plugs into the EAR and power sockets of a ZX 81 and can measure tempera tures from 5 to 100 degrees centigrade The measurement time is one second and a USR machine code routine is provided as a listing or on cassette The unit is hermetically sealed and the probe can be up to 35 metres long two metres is provided The probe returns a number between 500 and 2000 Accuracy is cl
106. sh literature 1 and 2 History 1 Mathematics 1 Music 1 Inventions 1 Spelling 1 and Geography 1 Spelling 1 is an interesting idea which unfortunately is not suitable for school use Words are played from tape listened to by the child and the child s spelling of the word is checked by the computer The only trouble is that there are too many sets of words on each side of the cassette 15 to be precise and the time involved in searching for sets as well as the fixed nature of the words renders it unsuitable for schools Nevertheless any parent interested in helping a child with spelling should consider it Geography 1 is very good indeed with two programs cities and countries in Europe and towns in England and Wales When run the relevant maps appear although borders in Europe are not marked An atlas would help The children enjoyed it and I felt it was useful to them as it can teach them as well as quiz them A good buy Mathematics 1 is a fairly ordinary mathematics tester The Rose cassettes do the same job better I feel although this one deals with decimals as well Apart from Spelling 1 Geography 1 and Maths 1 the other programs are simple quizzes That again beats and note times The four clef programs cover alto and tenor bass and treble When run notes appear one at a time a short bar which is suitably large for use on a classroom monitor the graphics are very good The children are then q
107. son Helpline Graham Blewbury Oxfordshire SINCLAIRUSER September 1982 MEMOTECH Explores the Excellence of your mums All five of the currently available Memopaks are housed in elegant black anodised aluminium cases and are styled to tit wobbie tree onto the back of the 2 8 allowing more add ons from Memotech or Sinclair to be connected MEMOPAK 64K MEMORY EXTENSION The 64K Memopak extends the memory of the ZX81 by 56K and with the 2 81 gives 64K which is neither switched nor paged and is directly addressable The unit is user transparent and accepts commands such as 10 DIM A 9000 Breakdown of memory areas 0 8K Sinclair ROM 8 16K This area can be used to hold machine code for communication between programmes or peripherals 16 64K A straight 48K for normal Basic use MEMOPAK 32K and 16K MEMORY EXTENSIONS These two packs extend and complete the Memotech RAM range for the time being A notable feature of the 32K pack is that it will run in tandem with the Sinclair 16K memory extension to give 48K RAM total MEMOPAK HIGH RES GRAPHICS PACK HRG Main Features Fully programmable Hi Res 192 x 248 pixels Video page is both memory and bit mapped and can be located anywhere in RAM Number of Video pages is limited only by RAM size each takes about 6 5K RAM Instant inverse video on off gives flashing characters Video pages can be superimposed Video page access is s
108. t answer There is scoring system to record performance Graphics hotes all entries are for graphic shifted keys except spaces whicl are inverse 100 Q Q space 5 three spaces W three spaces Q 8 four spaces W 2 five spaces W Q four spaces R space 6 two spaces E twospaces W 2 8 five spaces od We Q four sp 6 two 1 spaces E two 24 spaces 6 6 5 W space Q three spaces 3 ten spaces 1 7 57 8 six spaces W two spaces 6 9 PLoT EN opo 55e two spaces W 8 four spaces E 600 546 Sarg 760 eight spaces Q five spaces W 5509 J four spaces to 5 6 fourteen spaces 7 Q five spaces 1 2 spaces R space 3 Q spaces spaces T 7 2 2 6 space 5 space 2 7 space 3 W Q E 7 920 space 5 T 5 8 two spaces W Q space 5 1020 W 8 space E R Q space 5 8 5 R space w Q 1120 1230 J M d DEBA s 9956 9 32 INCLAIR 3 USER September 1982 969 Que 6566 55966 p pep PII dii OU 5 86 BOURNEMOUTH BRISTOL CAMBRIDGE CARDIFF COVENTRY DOVER LEEDS LIVERPOOL LONDON MANCHESTER NEUCASTLE NORWICH NOTTINGHAM OXFORD PLYMOUTH PORTSMOUTH READING SHEFFIELD SOUTHAMPTON SUANSEA YORK ppi
109. t these two certainly do My thanks to Newman for supplying the cassette for review The cost is 4 95 and you will need 16K I think itis reasonable value for disc packs are used to store the game and your progress It is a fact that some computer centres stopped work while the workers tried to finish a problem Of course the ones on micro computers like the ZX 81 are not so complicated but just as much fun to play and there are many for the 16K 2 81 They often produce much frustration but there is great satisfaction when a month of work produces a result Please send details of Mind Games to Philip Joy 130 Rush Green Road Romford Essex RM7 0QA 53 New 2 81 Software from Sincla A whole new range of software for the Sinclair 2 81 Personal Computer is available direct from Sinclair Produced by ICL and Psion these really excellent cassettes cover games education and business household management Some of the more elaborate pro grams can only be run on a 2 81 augmented by the ZX 16K RAM pack The description of each cassette makes clear what hardware is required The RAM pack provides 16 times more memory in one complete module and simply plugs into the rear ofa 2 81 And the price has just been dramatically reduced to only 29 95 The Sinclair ZX Printer offer full alphanumerics andhighly sophisticated graphics A special feature is COPY which prints out exactly what is on the who
110. t get my hands on it for two days I find in school that most of the children are interested in the concept of computers if not the technical side It is the girls as well as the boys although it is important to make sure the girls do not feel shy at the beginning because they feel the boys will know automatically what to do with a computer For three years from 1975 to 1978 Deeson took his family when he went to Nigeria as principal of a teacher training college There was no electricity hence no computers but surprisingly he loved e minute of it I enjoy responsibility and I like administration too I was in charge of hiring and firing selecting pupils arranging accommodation and all kinds of tasks The beauty of it was that my bosses were thousands of miles away He enjoys the challenge of the classroom too and feels he has sufficient experience to be in control of almost any situation which might arise but he also knows that the traditional classroom scene may not be with us much longer sure that within the next 50 years perhaps less schools will no longer be required We will get away from the classroom with its one teacher and 30 children and find real freedom I call it computer assisted freedom Obviously I do not want to see a police state but I think with computers that all the problems of discipline will disappear I want the children to wander round the room playing and talki
111. t speaker Tape power outlet Fully fused must be een Plus programs 100 CAR LOG new USEFUL suite of profecsional programs for the 2 16K 1 Very simple to use with ful Instructions 2 Complete cassette record of ruleage and itemised expenses 3 conceivable ratios totals and projections computed CAR LOG is suitable for your car your dad s car or your whole let of trucks Only 8 96 NIMROD SORTWARE Widney Lane Sout West Midlands 4 Stanley Rd London SW14 702 SINCLAIRUSER September 1982 ZX 16K MARVELS 4 QUALITY GAMES ON ONE CASSETTE FOR D EVOLVE FULL SCREEN INTERACTIVE t BREAKOUT NIM 4 SKILL LEVELS amp UNBEATABLE METEOR STORM FAST MOVING GRAPHICS GAME SEND CHEQUE PO WITH ORDER TO ONLY 3 95 ror 2 81 GAMES FROGGING larcade frogger Guide your frog across the river Becomes harder crocodiles etc MINOTAUR Beat the monster to maze exit 4 cassette D Warrington 1 Haddon Drive Bakewell DE4 1 BD 16 81 GAMES TAPE includes Chinvader 1 Chinvader 2 ChScramble ChCentipede Ch3 D Maze ChStartrek All in m c very fast and addictive On tape for only 5 2 81 16K REI Cr e repe MEI LU C HAMM tn ater gong 9 bref Of Te HARTLAND SOFTWARE Dept Si PENZANCE PLACE LONDON WII 2X 81 SATELLITE Independent resear
112. tment to the schools sector in November by sponsoring a special award scheme for ZX educational software Sinclair said The company has also not been slow in developing of all places the Japanese educational computer hardware market The ZX 81 is selling by mail order from Mitsui and through selected dealers to the key student market The company projects sales of 20 000 units in the first full year and 50 000 in the second Peripherals for the ZX 81 for the educational market are limited and few with the majority of the few being adequate for tutorial purposes That is with the exception of the ZX printer offering full alpha numerics across 32 columns and sophisticated graphics if used by commerce students for operations such as printing ready gummed labels The fault lies with the special aluminium coated paper supplied with the unit This situation however can easily be overcome by attaching a printer interface allowing the system to operate a conventional printer Nevertheless that limitation does not outweigh a reasonable price of 59 95 inc VAT A very useful feature is the 8K basic ROM allowing flicker free graphics Although it is generally accepted that graphics play a small SINCLAIRUSER September 1982 part if any in school computer use it is worthwhile to have available Also for any ZX 80 systems in the classroom it is equally expedient as drop in replacement chip It is supplied with n
113. tor 3 Thalia Close Greenwich 5 10 Supermart cost n bold type Your nar Note thia sen Sell your used computer or peripherals through Sinc up to 30 words for only 5 Should be mcluded Please print block captas Have you included the te al id 58 SPECTRUM 2X81 BUSINESS GAMES AUTOCHEF As you must negotiate decia on menu prices eve of AIRLINE You rust decide on number ot ath to by sr rur rd ew ot PRINT SHOP As owner of a pining Company vou have to deci on sag necks quotations won schedule 4 75 for one 800 for any two or Tid oo tor throw ien _ BINGO ON 1K 13 line listing calls 1 to 99 random order and displays tabulated check back Cheque PO 1 to C Jefferies 280 Whitefields Rd West Midlands B91 10 AMAZING 16K 2 81 GAMES Includes startrek Pacmaze and vampires Very good graphics 8 on cassette P O cheques to Michael Bredbury 25 Brynhedydd Road Rhyl Clwyd North Wales LL 18 SPECTRUM NEW GAME 2 PLAYERS 16k Spectrum gt STELLAR DUEL riy one Starship Captain wl survive wie Your LAND ON PLANETS PHASORS SEND IN ASSAULT TROOPS 2 WARP SUD LIGHT SPEED COLOUR SOUND CARNAGE SPECRUM ON ITS WAY Hae Tua SUPER NEW GAME ready soy load camem 5 78 c pos t TR
114. uizzed on the notes shown A help facility is included Beats aims to teach children rhythm by having them follow moving graphics In mystery beats the graphics are static and the children have to discover the beat for themselves As in Arithmetic for the under eights the large graphics fit these programs well for use in front of a class At 12 for three they must rank as good value essential for music teachers They also run themselves from loading a good Instructions were poor Educational software should be supported by comprehensive instructions renders them on account of content and age level unsuitable for schools Geography 1 is very good value for money and highly recommended All the programs were well error trapped although they did not run themselves from loading 7 81 Software published by Brian Negus of 19 Westfield Drive Loughborough Leics has three music teaching cassettes on offer These cassettes were well error trapped two of them dealing with the various clefs and the third with 16 feature Negus informs us that these programs will soon be available for the Spectrum AVC Software of PO Box 415 Harborne Birmingham B17 9TT submitted two programs for review Tables Countdown and Geography Hangperson at 3 per program The programs are claimed to be completely error trapped but one girl still managed to crash one when she typed RUN NEWLINE instead of G
115. used as an electronic blackboard fo draw ber charts level 1 S M P DEPTHCHARGE practice in ordered triple co ordinates in submarines dered cc zMC2 260 dinates in ZMA2 OXO ZMA3 Price Each Tape oxo dond VAT ade 1 for post amp packing Please tick which cassette required 2 51 SPELL INVADERS 2 2 2160 REACTION Test zmar Oxo ZMGi GRAPHS _ zmaz oxo zmct DEPTH CHARGE Nome Adress Please make cheque PO payable to Solent Software Engineering Ltd and post to SSEL Brookvale Waterworks Road Otterbourne Winchester 5021 20 l 26 ZX HARDWARE PROFESSIONAL 40 KEY KEYBOARD legends and graphics in 2 colours No soldering to ZX81 just plug in Proper typewriter keys RAM Printer compatable Kit 19 95 Built 24 95 Case 10 20 Repeat key add on TBA Range of in out ports music boards motherboards D to A converter boards write for catalogue 23 Way double sided gold female wirewrap type 2 95 Male connector 1 25 Ribbon cable 1 40 per metre Mastering Machine code book 5 50 Programming for real application 6 50 Tape for real applications 11 25 HARRIS amp LOCKYER ASSOCIATES Sole distributors for Redditch Electronics Dept YC 33 Pedmore Close Woodrow South Redditch Worcs Tel 0527 24452 edge connector
116. value at 6 50 SALES LEDGER Excellent small business system prints cash received sales day books on monthly basis maintains ledger for 50 accounts prints statements names and addresses etc Only 10 Also RETAIL ACCOUNTING 8 SYSTEM 6 50 2 off any 2 5 off any 4 software developed please contact us for a prompt quotation 42 45 New Broad St London EC2M 1QY ZX SAS INDEX RETRIEVAL Tailor ma SINCLAIRUSER September 1982 starting from scratch Come to the ZX 81 with a clear mind to make the best use of your new machine Lifetime s obsession can easily be acquired UYING a ZX 81 can be the of a lifetime obsession with home computing It is easy however to become discouraged if everything does not go to plan from the beginning For those with only a little knowledge of computers and their capabilities the best way to approach the ZX 81 is to abandon any ideas for special uses While the basic machine is ideal for learning how to use computers it is too small for any major uses It is better to become accustomed to the many facilities and then decide how you wish to ue them Begin by unpacking the machine overcoming your surprise at its size and weight and following the manual set up the system If you cannot get the K on the screen check that everything is plugged into its correct socket and re set the mac
117. ware and books for assembler assembler and cable push into the key company s RAM packs the ZX user Mansfield character set are also boardsocketsontheZX 81 cluding the new 32K Computers andElectronics available on cassette printed circuit board The 32K RAM pack is at 76 Ratcliffe Gate The board and monitor Thecostofthekeyboard have anexisting16KRAM Mansfield Notts NG18 disassembler costs 30 is 25 50 and in case it pack not only from 2 Tel 0623 31202 New for 2 81 users EVEN MORE MEMORY WITH OUR BYGER BYTE 32K RAM PACK Why put aside your 16K RAM Pack when you can use it together with the new Byger Byte 2 Ram Pack to give Address pen Make cheques payable to Pheonix Marketing and enclose No traling leads all you need dois plug Eh uer coc trailing leads or wires all you existing 16K Ram Pack into the back of the new Byger Byte Please debit my Access Barclay Card 2 Ram Pack and Bingo 48K of memory Date Uses existing power supply New 32K Ram Pack is tested and guaranteed with the following 16K Ram Packs Byg Byte Seat Dorma New 32K Ram Pack Also available 16K Ram Packs 22 new 32K Ram Pack oes 39 50 Standard 32K Ram Pack 35 64K Ram Pack 53 95 e Tepsbowding Tape loading interface for trouble free loading of program 9 50 New high qualit
118. y keyboard with bleep and reset 249 35 one 2 keyboard Al prices are inclusive of VAT and free postage and packing Please indicate order by ticking boxes PHEONIX MARKETING OAKLANDS HOUSE SOLARTRON ROAD FARNBOROUGH HANTS TEL 09552 514990 38 SINCLAIRUSER September 1982 GREAT NEWS for ZX81 Spectrum owners H ZX cassettes for just 1 each Why pay up to 10 more for a single cassette of programs which may only interest you for a while when you can hire from vast range of 130 programs for just 1 plus 25p p p for a fortnight Software Library caters for users of ZX81 1K and 16K and Spectrum and it s ideal if you re thinking of upgrading for you can switch to tapes suitable for your new hardware at any time al no extra cost knowing you haven t tied up your money unnecessarily Subjects include exciting machine code games educational toolkit and home club business utility programs ALL cassettes are genuine commercial originals and a free quarterly newsletter packed with tips keeps you up to date with new introductions SPECIAL OFFER Join NOW and get your first tape on FREE hire The Sinclair Owners SOFTWARE LIBRARY Heather Cottage Warren Road N a lke to join the Software Library for the next 12 months and enclose membership fee of 5 Please send my fira program tape on free hire pius list of others available unde
119. zzled by the concept of holidays free evenings and spare time it is one of the few things he admits is not his forte don t think I m in danger of having a nervous breakdown or anything I have the right personality to cope with all that but I admit that my family suffers I don t give them enough time Yet we have a really big super expensive family holiday about once every 18 months Last time we went to the States and I thought I would hate it taking no work with me but I found I could still switch off and I wasn t bored at all I loved it I never take a day off even at weekends there is just so much to do I read computing books instead of novels and I rarely watch television perhaps occasionally the news Deeson lives with his wife maths teacher their children and dog anda cat in a large comfortable house in a leafy suburb of Birmingham We know now about many of the things he does but why does he do them all It all began in 1968 Deeson a graduate of Keele University in physics and economics had trained as a teacher and was by then working as a teacher trainer a job to which he hopes to return one day People did not see the applications for computers in education at that time but I could see they were beginning to influence Ina rare spare ee our lives he says It was computer awareness which he found impor tant far more so than a grasp of t

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