Epson EL 4S/33 Скачать руководство пользователя страница 3 | Manualshive

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Epson EL 4S/33+

Major Subassemblies

System Board Components

12/93

Epson EL 4S/33+ - 3

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Содержание EL 4S/33

Страница 1: ...ated in EPROM on main system board 256KB DRAM on main system board expandable to 512KB or 1024KB using 70ns or 80ns 44256 DIP chips 32KB or 64KB 0 or 1 wait state access speed system ROM BIOS and video ROM can be copied into RAM Supports relocation of 256KB of memory from A0000h to BFFFFh and D0000h to EFFFFh to extended memory 1KB built into microprocessor Optional Cx83S87 33 coprocessor availabl...

Страница 2: ...B or 1 44MB storage capacity 5 25 inch diskette drive 360KB or 1 2MB storage capacity 3l cr inch form factor hard disk drive s up to half height size Half height tape drive CD ROM drive optical drive or other storage device S inch or 3 n with mounting frames Detachable two position height 101 or 102 sculpted keys countrydependent main typewriter keyboard numeric cursor control keypad four key curs...

Страница 3: ...Epson EL 4S 33 Major Subassemblies System Board Components 12 93 Epson EL 4S 33 3 ...

Страница 4: ...y reassign parallel and serial ports Check your MS DOS manual for more information SIMM Installation Your computer comes with 2MB or 4MB of memory on SIMMs You can increase the memory up to 16MB by installing 256KB 1MB or 4MB SIMMs in the computer s four SIMM sockets The following table shows the possible SIMM configurations do not install memory in any other configuration SIMM configuration Use o...

Страница 5: ... your system s performance for some applications by installing a Cx83S87 33 math coprocessor Hard Disk Drive Types The computer comes with a hard disk auto sensing feature When you select AUTO DETECT 1 or 2 for your hard disk type in SETUP the system detects the type of hard disk drive you have installed when you boot and fills in the drive information using values in the following table Some olde...

Страница 6: ...served 8 bit Reserved 8 bit FDD controller 8 bit Reserved 8 bit Cascade for DMA controller 1 Reserved 16 bit Reserved 16 bit Reserved 16 bit Hardware Interrupts IRQ no Function lRQ0 Timer output IRQ1 Keyboard IRQ2 Cascade from IRQ controller 2 IRQ3 Serial port 2 IRQ4 Serial port 1 IRQ5 Parallel port 2 IRQ6 FDD controller Epson EL 4 S 33 6 12 93 ...

Страница 7: ...r system board 64KB Duplicated from 0E0000h Extended memory System BlOS ROM 64KB Default Shadow RAM duplicated at FF0000h Unused or l O expansion ROM 160KB Reserved for ROM on I O adapters VGA BlOS ROM 32KB Default shadow RAM VGA text color 32KB Unused or VGA text monochrome 32KB Video memory 64KB Reserved for graphics display buffer 16MB Maximum system memory 1MB 640KB 12 93 Epson EL 4S 33 7 ...

Страница 8: ...onnector pin assignments CN8 Diskette drive connector pin assignments J42 Hard disk drive connector pin assignments J38 Active low logic Epson EL 4S 33 Speaker connector pin assignments J34 Optional game port connector pin assignments Optional game port interface pin assignments J1 Option card riser board connector pin assignments S1 All odd numbered pins are grounds Epson EL4S 33 8 12 93 ...

Страница 9: ...s not produce a match for the drive you can define your own drive type by selecting User Def 1 or 2 as the type and entering the drive s exact parameters It is 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 disable the built in IDE hard d...

Страница 10: ...u are installing a video adapter card make sure you disable the built in VGA by changing jumpers J7 J8 and J9 to the Off position COM Port Assignment If you want to assign COM1 as COM3 you must set jumper J24 to position 2 3 If you want to assign COM2 as COM4 you must set jumper J26 to position 2 3 System Problems Q Do not attempt to install OS 2 version 2 1 from CD ROM 0 Do not use this computer ...

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