Kouwei KW-518 User`s Manual
Contents
1. i 2 5 MB RAM CARD USER S MANUAL TABLE OF CONTENTS Page SECTION 1 INTRODUCTION 1 1 1 PORHUTGS 1550 Aa ire da idas 1 12 brstallation Ea 5e En maak Aries A0 1 SECTION 2 CONFIGURATION WITH DIP SWEDEN sas cm oie raras 4 2 1 IC inserted memory banks 4 2 2 partite address sa 50235445253 5 SECTION 3 SET UP EXAMPLES 8 FIGURES Fig 1 1 Board Layout of KW 518 3 APPENDIX Block Diagram of KW 518 1 All rights reserved reproduction of any part of this manual in any form is forbidden without express written permission from Kouwei Electronic Corporation CAUTION In order to avoid damaging the DRAM Chips always remember to 1 Discharge yourself of static electricity before handling KW 518 2 Insert or remove the DRAM chips only at a static free workstation Manufacturer Kouwei Electronic Corporation SECTION 1 INTRODUCTION KW 518 is an adapter designec for use in 286 microcomputer systems with up to 2 5 Mb of memory expansion capacity The split memory addressing function of KW 518 can round out the base memory of 286 system to its 640 Kb limit in addition to providing memory in the 15 Mb memory expansion area Throughout this manual the term base memory is defined as the user accessible memory in the address range prior to the 640K to 1024K reserved area and the term extension memory defined as the user accessible memor2. guralion will help illustrate this example SWI SW2 fr Y YH hr EE 4 ES ON ON ON Ob OFF OFF OFT ON ON ON ON ON Amount of inserted memory Vs banks RANK BANK BANK3 BANK4 BANKS SIIRI 5 2Kh 12Kb SI2Kb 512Kb 3 A system board has 1024 Kb of DRAM installed of which 512 Kb are assigned to be the base memory and another 512 Kb to the expansion memory area To install a KW 518 the starting address has to be set adjacent to the upper limit of the extension memory existed which is 1024 K 512 K 1536 K all the memory on KW 518 will contribute to the extension memory Suppose each of tue five banks are inserted with 41256 type ICs the ex ension memory resulted will be re 512 Kb 512 Kb 5 3072 Kb The base memory size will stay at 512 Kb To help illustrate this example please refer to the following configuration SWI sw a 3 4 5 fy 7 H 2 4 4 OVT OPT ON OTE OTT OFF OFF ON ON ON ON ON Amount of memory inserted vs banks BANK RANES BANKI BANKA BANKS 412 191 41 12Kh 1 2Kb 512Kb 4 The DRAM IC installed on a system board ac counts to 1024 Kb and 640 Kb of which are assigned to be the base memory with the rest 384 Kb to the expansion memory area To install a KW 518 the starting address has to be set at the lowest unclaimed address space in the expansion memory area which is 1024 K 384 K 1408 K In case all the five banks are inserted with 41256 type ICs the resulted extension memory will be 384 Kb
3. 1 BOARD LAYOUT OF KW 518 0000000 10000001 00000000 y IE 0 li iki 10000000 100000000 0 SECTION 2 CONFIGURATION WITH DIP SWITCHES 2 1 IC inserted memory banks To configure the IC inserted memory banks on KW 518 adjust SW1 8 number 8 on DIP switch SW1 and SW2 1 through SW2 4 to enabie the IC inserted bank s and disable the vacant bank s according to Table 2 1 This configuration will define the address space range your KW 518 can I 1 1 5 1 respond Each bank consists of two 9 chip sockets Table 2 1 SW1 8 SW2 L SW2 2 SW2 3 SW24 BANKI HANK BANK3 BANK4 BANKS ON ON ON ON ON F E E t ON ON ON ON OFF E E F l ON ON ON Obl OFF b E 1 ON ON OFF Ort OF E E D 1 ON OFF OFF Ott ODI E D 1 y OFF OFF OFF Olt Ol D pD 1 D E enable D disable 1 F A 2 2 STARTING ADDRESS To select the starting address for KW 518 provided memory expansion abide by the following guide lines Addresses are expressed in decimal with K meaning 2 to the power of 10 and M meaning 2 to the power of 20 a KW 518 shall not be made responding to addresses already used by memories from system board or other RAM expansion cards The base memory before installing KW 518 has to be correctly reflected by switch or jumper settings on the system board to avoid overlap ping menticned above The address range 640K through 1024K are re served for video RAM I O ROM etc and are un
4. 512 Kb 5 2944 Kb The base memory remains at 640 Kb To better understand pleaserefer to the following configuration SW SW2 Ll wa 4 amp hb F amp I Yu 4 ON OFF ON OFF OFF OFT OFF ON ON ON ON ON Amount of memory inserted vs banks BANK BANK BANKI BANK4 BANKS 512Kb 512Kb 512kb 512kb 512Kh I the system incorporates other adapter with RAM expansion to respond extension memory before installing KW 518 then the starting addresses and extension memories concluded from the above examples has to be added with the corresponding adapter s memory dimension APPENDIX BLOCK DIAGRAM OF KW 518 SBHE Ei AQ O O XA MEMR as SMERU rose f RAM SWi sl a7 HIGH BYTE A17 423 i DECODER RAM DQ DIS DATA BUS LOW BYTE BUFFER AQ DATA FLOW SBHE DIRECTION I O CHK MEMR CONTROL MEMW LOGIC
5. FF OFF OFF ON ON ON ON ON OM OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF ON ON ON ON ON CN OFF OFF OFF OFF OFF OFF S5 OFF OFF ON ON ON ON ON ON N ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON S6 ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFE OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON selecting this starting address for system board with 512Kb base memory and no extension memory only bank 1 on KW 518 is preferably pluged with 4164 type DRAM for only 128Kb can be enabled on bank 1 under these conditions SECTION 3 SET UP EXAMPLES The following examples are used to illustrate methods in setting up the switches in each ex ample we hypothesize that no other adapters were used to provide extension memory The units used in these examples to express memory size and addressing in decimal are Kb and K they can be converted to Mb or M for your reference with the formulas 1M 1024K 1 Mb 1024 Kb 1 A system board has 512 Kb of DRAM installe
6. N 56 ON ON OFF OFF OFF OFF OFF OFF OFF OLF OIF OFF OFF OFF OFF OVI Or Orb Ol OFI OFI Obl OFT OFF ON ON ON ON ON ON Starting address in M inK 8 750 R960 8 875 9088 9 000 9216 9 250 9472 9 375 9600 9500 9728 9 750 9984 9 875 10112 10 000 10240 10 254 10496 10 375 10624 10 500 10752 10 750 11008 114 875 11136 11000 11264 11 250 11520 11 375 11648 11 500 11776 11 750 12032 11 875 12160 12000 12288 12 250 12544 12 375 12672 12500 12809 12 750 13056 12 473 13184 13 000 13312 13250 13568 133758 13696 13 500 13824 13750 14080 13875 14208 14 000 14356 14250 14592 14375 14720 14 500 14848 14730 15104 14875 15292 15 000 15360 15 350 156l6 15375 15743 15 500 5872 15750 16128 15 975 162560 When S1 ON OFF ON OFF ON DPF ON OFF Ot OFF ON OFF ON OFF ON OFF ON OFF ON Ork ON OFF ON OFF OM OFF ON OF ON OFF ON OFF ON OEF ON OEL ON OFE ON OF ON OFF CN Ol 1 Table 2 2 Toggle switch settings on SW1 52 OFF OFF ON ON OFF OFF OFF OFF ON ON OFF OFF OFF OFF ON ON OFF OFF OFF OFF ON ON OFT CFE OMI OFF ON ON OFF OFF OFF OVE ON ON OFF OFF OER OFF ON ON OFF OFF OFT UPF 53 OFF OFF ON ON ON ON OFF OFF ON ON ON ON OFF OFF ON ON ON ON OFF OFF ON ON ON ON OFF OFF ON ON ON ON DFV OFF ON ON ON ON Ort OFF ON ON OM ON UFF OFF 54 ON ON OFF OFF OFF O
7. able to be set as the starting address _ For systems with 512Kb of base memory and no extension memory the starting address assigned to KW 518 can be 512K or 1024K In general for expansion beyond address 1024K no gaps between memory are allowed The switch 1 through 7 on SW1 are used to con figure the starting address determined by the following table Starting address inM inK Sl 0 250 256 OFF 1000 10240 1 250 1280 OF 1 375 1408 ON 1 500 1536 OFF 1 750 1792 ON 1 875 1920 OFF 2 000 2048 ON 2 250 2304 OFF 2 375 2432 ON 2 500 2560 OFF 2750 2816 ON 2815 2944 OFF 3 000 3072 ON 3250 3328 OFF 3375 3456 ON 3 500 3584 OFF 3 750 3840 ON 3 875 3968 OFF 4 000 4096 ON 4 250 4352 OFF 4 375 4480 ON 4 500 4608 OFF 4 750 4864 ON 4 875 4992 OFF 5000 5120 ON 5 250 5376 OFF 5 375 5504 ON 5 500 5632 OFF 5 750 5888 ON 5 875 6016 OFF 6 000 6144 ON 6 250 6400 OFF 6 375 6528 ON 6 500 6656 OFF 6 750 6912 ON 6 875 7040 OFF 7 000 7168 ON 7 250 7424 OFF 7 375 7552 ON 7 500 7680 OFF 7 750 7936 ON 7 875 8064 OFF 8 000 8192 ON 8 250 8448 OPL 8 375 8576 ON 8 500 8704 OFT Table 2 2 Toggle switch settings on SW 52 53 OFT OFF ON ON ON OFF OFF ON ON ON ON OFF OFF S4 ON OLE OFF OFF OFI OFF ON ON UN ON ON OFF OFF OFE OFF OIT OTI UN ON ON ON OLT Obl Obl Ol Obl DPT ON ON UN ON ON DN OPE kal Oly GET OF Ol ON ON IN ON 55 O
8. d with no extension memory To install a KW 518 two approaches in determining the starting address can be selected each supported by in serting a different type of memurv IC into bank is Case 1 Starting address set at 1024K The base memory size 512 Kb is not affect ed and all the KW 51S memory contribute to the extension memory Use only 41256 type to fill any bank s including bank 1 Case 2 Starting address set al 512 K The memory on bank 1 will contribute t gt the base memory the memory from other banks will contribute to extension memory Because only 128 Kb on bank 1 can be enabled in this case the recommended DRAM for bank is 4164 type To illustrate case 2 refer to the following configuration suppose bank 1 is inserted with 4164 type ICs bank 2 3 4 5 are inserted with 41256 type ICs SWI SW2 NIE 1 h Be FT AB ke 2 Cd ON ON OFF ON ON ON ON ON ON ON ON ON Amount of memory inserted vs banks BANKI BANK2 BANKA BANKA BANKS 28Kh 512Kb 512kb 512Kh 512Kh 2 A system board has 640Kb of DRAM installed with no extension memory To install a KW 518 to it the starting address has to be set at the lowest unclaimed address space in the expansion memory area which is 1024 K all the memory from the KW 518 will contribute to the exten sion memory The base memory will remain at 640 Kb Suppose that all five banks are inserted with 41256 type ICs the extension memory is now 512 Kb 5 2560 Kb the following confi
9. y in the 15Mb memory expansion area which starts at 1024K 1 1 FEATURES Sockets for all memory chips User upgradable memory size Split memory addressing to address base memory completely before addressing the extension memory 1 2 INSTALLATION The steps listed below are to be followed when installing KW 518 1 Insert DRAM chips into the vacant memory bank s one bank at a time according to the ex pected expansion Memory ICs are to be inserted from the lowest order vacant bank to contiguous higher order bank s with 41256 type The only exception is using 4164 type on bank 1 under the following conditions 1 Base memory is 512Kb 2 Extension memory is 0 Kb 3 Starting address is selected at 512K In this case only 128 Kb of memory can be en abled on bank 1 therefore the use of 4164 type to insert into bank 1 is recommended 2 Configure the IC inserted banks and starting address with DIP switches following directions in section 2 Plug KW 518 into one of the I O slots with a 36 pin and 62 pin card edge socket power must be turned off when installing 4 Turn on the power and run SETUP program to reflect the switch configuration the program 1S usually supplied with your personal computer system s Fig 1 1 shows a draft board layout of KW 518 indicating locations of DIP switches and memory banks Note each bank is consisted of two 9 socket rows with the nineth chip used for parity checking FIG 1
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