Epson 4+ Laptop User Manual
Contents
1. EE2 EE3 Dala acquisition adapter 3 22E1_ GPIB adapter 1 42E1 GPIB adapter oS 62E1 GPIB adapter3 i y 82E1 GPIB adapter o A2E1 GPIB adapter BL E21 GPIB adapter 7 VO addresses hex 000 to OFF are reserved for the system board 1 0 Hex 100 to 3FF are available on the system channel EPSON Equity 4 5 EPSON Equity 4 System Memory Map 23FFFFF 36MB Extended memory 0100000 1MB System BIOS Shadow RAM 64KB R 00E0000 ee 00c0000 ae ean Rua E 0000000 Jumper and DIP Switch Settings Display Adapter and CPU Jumper Settings Jumper Setting Function _ _ _ J3 A Enable the built in VGA adapter B Disable the built in VGA adapter so you can use a d amp play adapter on an option card as your primary adapter B select sx CPU Factory setting Factory set according to system CPU External Cache Jumper Settings Factory setting change jumpers only if external cache chips are installed EPSON Equity 4 6 Hard Disk Drive Jumper Settings Mode Number Master Drive Slave Drive ConnerCP30104H C D jumpered ic D and DSP jumpered no jumpers _ Quantum LPS240AT DS jumperad DS jumpered no jumpers H CS cable selection is jumpered the drive is a master if pin 28 is grounded and a stave if pin 28 is not grounded DIP Switch Settings Setting Function 1 ON 33 MHz CPU speed ae a Fit OFF 33 MHz CPU spe2. lock setting selectable through SETUP 6 pin mini DIN connector PS 2 compatible mouse interface built into main system board 6 pin mini DIN connector Four 16 bit or S bit I O expansion slots ISA compatible 8 MHz bus speed three slots accommodate any size card bottom slot can hold reduced size card 4 4 inch 110 mm Internal piezo electric speaker on main board IBM compatible VGA pass through interface built into main system board 26 pin connector Three half height drives maximum configurable using the following 25 inch 1 2MB high density capacity 3 5 inch 1 44MB high density capacity 5 25inch 360KB double density capacity 3 5 Inch 720KB double density capacity Dual diskette drive 3 5 inch 1 44MB and 5 25 inch 1 2MB 3 inch form factor hard disk drive s up to half height size the first mounted vertically second mounted _horizontall Half height tape drive CD ROM or other storage device 5 inch or 31inch with mounting frames Detachable two position height 101 or 102 sculpted keys countrydependent main typewriter keyboard numeric cursor control keypad four key cursor control keypad 12 function keys Stored in ROM accessible by pressing the Delete key at the SETUP prompt during boot Video Modes Extended 512KBmemory required oxa lek oO s0x60 Jas ooo 300x600 tax S soo x60 fek Poss x 768 Sid 280x10 fe Extended 1 MB
3. D 0 0 o og D D og X L a NS hard disk drive E ao connector D D a D qo go a u D D E a D a DH a cx E A external cache sockets c A N a rr es Cc a a R TT tn ne 1 0 d L A 1 ean a R 1 e Q ey a O Z S jumpers battery J4 J9 processor in connector piezo electric PGA socket speaker 10 1 93 EPSON Equity 4 3 EPSON Equity 4 Major Subassemblies VGA feature option card connector connector board video i power memory supply sockets i SIMM sockets DIP switches micro processor battery CNS diskette drive bays drive Connector Pin Assignments Parallel Port Connector CNS pin 13 pin 1 pin 25 pin 14 Parallel Port Connector Pin Assignments Strobe 10 ack 19 Signal ground Signal ground 21 Signal ground Signal ground a 22 Signal ground 22 Signal ground Signal ground Active low logic EPSON Equity 4 4 Serial Port Connectors CN9 and CN10 Pin 1 JEN pin 5 ee pin 6 e pin 9 Serial Port Connector Pin Assignments Signal Data carrier detect 16 Data set ready Request to send Transmit data 18 Clear to send Data terminal read 9 Ring indicator Not used O Keyboard Connector CN5 and Mouse Connector CN4 pin 6 pin 5 pin 4 pin 3 pin 2 pin 1 Although the keyboard and mouse connectors are physically identical they cannot be used interchangeably Keyboard and M
4. EPSON Equity 4 power SPEED light power keyboard inlet Computer Specifications CPU and Memory 32 bit CPU System speed hard disk diskette power Memory access light drive button ROM Video RAM bay for hard disk diskette drive padow REN CD ROM tape drive or other Cache option card slots Math coprocessor Clock calendar Controllers Video Port noise PONT pens ps RE port port pR Diskette Hard disk 4SX 25 Intel 486SX 25 MHz microprocessor in PGA type CPU socket can be upgraded with optional 487SX 25 or ODP486 25 OverDrive processor Interfaces 4DX2 50 Intel i486DX2 50 MHz as microprocessor in PGA type CPU socket Fast and slow speeds available fast speed Parallel depends on CPU 25 MHz or 50 MHz slow is simulated 8 MHz speed speed selection through keyboard command 0 wait state memory access at fast speed To select slow speed press the Ctrl Alt S and keys simultaneously To select fast speed press the Ctrl Alt and keys simultaneously Use the or key on the numeric keypad Default system speed is also user selectable through SETUP 10 1 93 4MB RAM standard expandable using 1MB 4MB or 16MB SIMMs to 36MB maximum SIMMs must be 36 bit fast page mode type with 70ns or faster access speed 128KB system BIOS video BIOS and SETUP code located in EPROM on main system board 512KB DRAM on main system board expandable to 1MB using 256k x 4 bit DRAM ZIPs Supports
5. MT4C42562 6 MT4C42562Z 7 KM44C256CZ 6 KM44C256C2 7 Cache Memory Additional cache memory can be installed in eight sockets in Bank 0 and Bank 1 on the main system board The figure below shows how the SRAM are distributed SRAM must tue usr L BANKI match type j in banks j i TPE WRG ieee mae TE i t 1 i i ilusi uzol us lua BANKO EOT i l eee 8KB or 32KB SRAM chips can be installed Bank 0 must be filled before Bank 1 The SRAM type used for dirty RAM and tag RAM must match the type installed in the banks The table below shows the possible configurations Cache Memory Configuration Cache size Banko Banki Diny Tag OK e S ee y yo 32KB _ J4xaks o nxekB 1xekB 128kB_ _ 4xs2kB fo ix32kB_ 1x32KB_ 1 x 32KB 10 1 93 Hard Disk Drive Types The table below lists types of hard disk drives supported by the computer Check this table and the hard disk manual to find the correct type number s for the hard disk drive s installed in the computer Enter the type number s when you set the hard disk drive configuration in the SETUP program Hard Disk Drive Types Sa um laar Drive nameimanufac turer AAA a SS D eg 9 9 9 E la L L LL x SS SIS JSS SS ce Ee ed la I 225 ST 4026 WD 93024 L L CP 3024 ST 125 ST 125A ST 325A 2 CDC 94205 51 CP 3044 t CP 2044 t 7040 8051A T 20 7m fs fso fm fiz o mkir a frs f7 faw fr fir e _ mesra srisa
6. ed OFF CPU absent from PGA socket Off Disable password security feature OFF Select monochrome monitor Factory setting Factory set according to system type Processor Chips The 4SX 25 system can be upgraded with an Intel OverDrive processor on the main system board to effectively double the internal clock speed of the computer s microprocessor Alternatively the 4SX 25 accepts the Intel 487SX 25 microprocessor with built m math coprocessor SIMM Installation The computer comes with 4MB of memory on the main system board To increase the amount of memory in the computer up to 36MB install 36 bit fast page mode SIMMs that operate at an access speed of 70ns or faster with a capacity of 1MB 4MB or 16MB The following table shows the possible SIMM configurations do not install memory in any other configuration SIMM Configurations 1MB 0 5MB 4MB 0 TRMBPp EEE l4eMmB o CC CNCCOCOC C d 2OMB Cisi i idzs 16MB 21MB 16MB 24MB 16MB 16MB Standard memory on the system board SIMMs can occupy either socket 36MB 10 1 93 EPSON Equity 4 Video Memory If the computer has 512KB of video memory you can install four 256K x 4 bit 70ns 20 pin DRAM ZIP Zig zag Inline Package chips to increase the video memory to 1MB The following table lists compatible DRAM ZIP chips Supported Video ZIP Chips Manufacturer Part number Goldstar GM71 C4256AZ 70 Micron
7. memory required Power Supply input ranges 90to264VAC__ i O 5 VDC at 11 Amps 12 VDC at 2 0 Amps 5 VDC at 0 3 Amps 12 VDC at 0 3 Amps 47 to 63 Hz Maximum outputs Option Slot Power Limits Maximum current __ 5 Volts 12 Volts 5 Volts and 12 Volts For each slot 0 3 Amps For all four slots__ 11 Amps 2Amps _ 0 3 Amps Environmental Requirements range range Temperature 41 to 90 F 4 to 140 F 4 to 140 F 20 to 60 C Humidity 20 to 90 10 to 90 10 to 90 non condensing 100 to 3 999 m 100 to 12 000 mi wet bulb 20 C 40 C noise Physical Characteristics Width 14 8 inches 370 mm 16 5 inches 412 mm Height 4 8 inches 120 mm Weight 16 7 b 7 5 kg with one diskette drive and one hard disk but without kevboard 10 1 93 EPSON Equity 4 Main System Board Diagram VGA video parallel port serial port 2 serial port 1 mouse keyboard ee Ea fraai dAn om el jumper L lnt DIP switches SIMM sockets power supply J3 Sa connectors CNS oa od D o oa j Bea option card ao riser board VGA feature 8 9 connector connector 6 2 o D 0 z 8 9 k oo gag D D og D D og o 0 D DH D D oo 8 2 moonionmonoe ag video memory S B 512KBoptional lt lt ellellelelle go ziz z iz iz z go KA bard HO Oo Oo jo C D N o fo IIs jS S 5 5 S gt os c1 oo diskette drive oo connector og
8. ot key is pressed the keyboard and mouse lock until the user enters the password Booting Sequence Q If you cannot boot the computer from the hard disk drive make sure the booting sequence in the SETUP program is set to A C Then boot the computer from a system diskette in drive A Information Reference List Engineering Change Notices None Technical Information Bulletins None Product Support Bulletins None Related Documentation simultaneously Try loading the program at slow speed TM EQ4 Epson Equity 4 Service Manual and then switching to fast speed if possible PL EQ4 Epson Equity 4 Parts Price List When using a software package that uses a key disk as its ef ik c copy protection method try loading it at fast speed If this aii gaul R does not work load it at slow speed EPSON Equity 4 8 10 1 93
9. ouse Connector Pin Assignments 5VDC fused 3 Ground Reserved VGA Port Connector CN13 Din 5 pin 10 pin 15 VGA Port Connector Pin Assignments Pin __ Signal Pin _ Signal Pin _ Signal 1 Red fe Redground _ 11 NC 2 _ Green 7 Greengrouna 12 NC 3 Blue 8a Blue ground 119 l Horizontal sync _ a Jne fg Nc 14 _ Vericaisyne 5_ Ground io Groun TR NC 10 1 93 EPSON Equity 4 VGA Feature Connector CN14 pint pin 25 per URES aE EERE HE VGA Feature Connector Pin Assignments Signa Signal BLANK ENPCLK VSYNG Ground Ground Not connected Not connected Ground Ground Ground Ground ENDATA ENSYNC eee Active low logic DMA Assignments Assigned device pare 8 bit amp lt a Hardware Interrupts Function Sempa SSS Semp S SSS Available parallel port 2 RO7 ROS Available PS 2 compatible mouse optional pointing devices Raa HDD controller SS IRQ15 Available 10 1 93 System I O Address Map Assigned device DMA page register 74LS612 Interrupt controller 2 8259A 1F0 1F8_ Harddisk Cd Parallel printer port 2 2E 1 GPIB adapter 0 2E2and 2E3 Serial port 2 Prototype card 360 363 PC network low_address 3A0 3AF Bisynchronous 1 Enhanced graphics adapter 3D0 3DF__ Color graphics monitor adapter 3F8 3FF___ Seralpoti o O
10. s recommended that a 16 bit AT type hard disk controller be used if you are installing a drive that cannot use the embedded IDE interface If you install a non IDE hard disk drive and controller card you need to use the SETUP program to disable the built in IDE hard disk drive interface When installing a hard disk drive see the hard disk drive types table on page 7 and use the SETUP program to select the correct type number for the drive You can select a type number that matches the parameters for the drive or a type number with parameters having lesser values as long as they do not exceed the maximum capacity in MB of the drive If there is no match for the drive you can select a user defined drive type 47 and enter the drive s exact parameters Software Problems Qi When installing a copy protected software package first try the installation at fast speed If this does not work properly select slow speed by pressing the Ctrl and Alt keys and the key on the numeric keypad Password D Make sure that you do not forget the password you set up If you do 1 Disable it by setting DIP switch 4 on the main system board to OFF 2 Then turn the computer on and off again 3 Set DIP switch 4 to ON to enable the password function 4 Run SETUP to enter a new password if desired Q Users can enter a hot key designation in SETUP to secure the system from unauthorized users Once a password and hot key have been set when the h
11. shadowing of system and video BIOS ROM into RAM 8KB of internal cache built into the microprocessor expandable to 256KB using 8KB or 32KB 70ns SRAM DIP chips On 4DX2 50 system math coprocessor built into the microprocessor optional 487 upgrade available for 4SX 25 system Real time clock calendar and CMOS RAM socketed on main system board with built in battery backup Cirrus Logic GD5422 VGA controller on main system board provides true color resolutions up to 800 x 600 with 512KB standard memory with 1MB upgraded memory provides resolutions up to 1280 x 1024 Controller on main system board supports up to two diskette drives or one diskette drive and one tape drive Interface on main system board supports up to two IDE hard disk drives with built in controllers VGA interface built into main system board for analog or multifrequency VGA monitor 15 pin D shell connector One standard 8 bit parallel uni or bi directional interface built into main system board I O address selectable through SETUP 25 pin D shell connector Two RS 232C programmable asynchronous interfaces built into main system board 9 pin D shell connectors EPSON Equity 4 1 EPSON Equity 4 Keyboard Mouse Option slots Speaker VGA feature connector Mass Storage Diskette drives Hard disk drives Keyboard SETUP Program EPSON Equity 4 2 PS 2 compatible keyboard interface built into main system board num
12. t i 2 fs J a s jr Jo T o i Ja fa Jo J hr ho T 24 e a essas foe ae fei _ oPaoest 25 77 e fess 7 as ioo opas e e Jesss ow fae fie a fee 7 fa pe fjr Ja o y Joe s 7e fo r a To a ieee Too Se ees oo ooo H o a o o o ooo ooo ooo Se o o o a pe h po pe Jo Je N 2 jes s Tess fies Jr Je T SSS s Jen s essas feo ss ft upsizoarg _ a4 ra ia esses r si aaa upsomoar A T ien esses ee os fms forward 3 fse e fess fsa H L ze e ess 7e a9 fie oPamos O 90 to esses o fiz fet oma mkose a 12 fs Jesss io faa je onceetoeso 4 12 fs _ ess to as fo ocasio 1023 17 1325 3085 LANG4 XT 1085 e p e AP E s 44 e io esss e faa fiaz maser s ioe fs fse fje jr qe T PTT uap Actual size when formatted may be slightly different than the size listed on the drive label t Hard disk drive supported in translate mode Epson drives EPSON Equity 4 7 EPSON Equity 4 Installation Support Tips Mouse and Keyboard A When connecting the mouse and keyboard to the computer be careful to plug them into the proper ports Although the ports are physically identical they are not interchangeable and damage may occur to the main system board if you plug the connectors into the wrong ports Installing Diskette Drives D Make sure that the drive type has been correctly selected in the SETUP program Installing Hard Disk Drives Q It i
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