Specifications

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Epson EL 3S/33

hard disk or diskette

drive bay

button

I’

reset

power light

button

speed (TURBO)

diskette drive

hard disk

‘ght

access light

monitor cable

I I

inlet AC outlet

I I vAA \

COM1 COM2

Parallel

Game

Computer Specifications

CPU and Memory

32-bit CPU

80386SX, 33 MHz microprocessor with

16-bit bus

System speed High and low speeds available; high

speed is 33 MHz, low speed is 8 MHz;

speed selection through SETUP program

and keyboard commands; 0 or 1 wait state

memory access selectable through SETUP

Memory

ROM

Video RAM

Shadow RAM

Math

coprocessor

Clock/calendar

Controllers

Video

Diskette

Hard disk

Interfaces

Monitor

Parallel

To select low speed, press the

Ctrl, Alt,

and - keys simultaneously. To select

high speed, press the Ctrl, Alt, and + keys

simultaneously. (Use the - or + key on the

numeric keypad.)

2MB RAM standard on SIMMs;

expandable using 256KB, 1MB, or 4MB

SIMMs to 16MB (maximum); SIMMs must

be 30-pin, fast-page mode type with 70ns

(or faster) access speed

Phoenix BIOS A386 V1.03; 64KB system

BIOS, video BIOS, and SETUP code

located in EPROM on main system board

256KB DRAM on main system board,

expandable to 512KB or 1MB 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

80387SX, 33 MHz socket for math

coprocessor

Real-time clock, calendar, and CMOS

RAM socketed on main system board with

built-in battery backup

Trident@ VGA controller on main system

board; provides resolutions up to

1024 x 768 in 16 colors

Controller on main system board supports

up to two diskette drives, maximum

Interface on main system board supports

up to two IDE hard disk drives,

maximum, with built-in controllers on the

hard disk drive itself.

VGA interface built into main system

board for analog or multifrequency VGA

monitor; 15-pin, D-shell connector

One standard B-bit parallel, unidirectional

interface built into main system board;

25-pin, D-shell connector

5/28/93

Epson EL 3S/33-1

Summary of content (8 pages)

PAGE 1
Epson EL 3S/33 To select low speed, press the Ctrl, Alt, and - keys simultaneously. To select high speed, press the Ctrl, Alt, and + keys simultaneously. (Use the - or + key on the numeric keypad.) hard disk or diskette drive bay Memory 2MB RAM standard on SIMMs; expandable using 256KB, 1MB, or 4MB SIMMs to 16MB (maximum); SIMMs must be 30-pin, fast-page mode type with 70ns (or faster) access speed ROM Phoenix BIOS A386 V1.
PAGE 2
Epson EL 3S/33 Serial Game Keyboard Option slots Two RS-232C, programmable, asynchronous interfaces built into main system board; 9-pin, D-shell connectors Power Supply Type 65 Watt, fan cooled One game port interface built into main system board; 15-pin, D-shell connector Input ranges 90 to 260 VAC Maximum outputs +5 VDC at 7.5 Amps, +12 VDC at 2.0 Amps, -12 VDC at 0.
PAGE 3
Epson EL 3S/33 Serial Port Connectors (CN4 and CN5) Major Subassemblies a, option card connector coprocessor J4 power supply J11 I \ I main system board Serial Port Connector Pin Assignments Keyboard Connector (CON1) pin 5 + pin 3 pin 4 -b \ 1 pin 2 I pin 1 \ drive bays mounting bracket Although the keyboard and mouse connectors are physically identical, they cannot be used interchangeably.
PAGE 4
Epson EL 3S/33 Game Port Connector (CN1) pin 8 System Memory Map pin 1 000FFFFFFh System BIOS ROM: 64KB Duplicated from 0F0000h pin 15 pin 9 000FF0000h Resewed for system board: 64KB Duplicated from 0E0000h Game Port Connector Pin Assignments 000FE0000h DMA Assignments 16MB Maximum system memory) Extended memory 1MB 00100000h System BIOS ROM: 64KB Default Shadow RAM duplicated at FF0000h OOOFOOOOh Hardware Interrupts Unused or i/O expansion ROM: 160KB Reserved for ROM on i/O adapters 000C8000h -
PAGE 5
Epson EL 3S/33 System l/O Address Map Hex address j Assigned device 000-01F I DMA controller 1,8237A-5 020-03F interrupt controller 1,8259A, master 022-023 Chip set configuration register 040-05F Timer, 8254-2 060-06F 8042 (Keyboard) 070 - 07F (CMOS) Real-time dock NMI (non-maskable interrupt) mask 080-09F page register, 74LS612 0A0 - 0BF interrupt controller 2,8259A 0C0-0DF DMA controller 2,8237A-5 Jumper Settings Port Jumper Settings Factory setting ** DOS automatically reassigns parallel and serial po
PAGE 6
Epson EL 3S/33 Processor Chips Hard Disk Drive Types You can install an 80387SX, 33 MHz math coprocessor on the main system board. The table below lists types of hard disk drives you can use in the computer. Check this table and your hard disk manual to find the correct type number(s) for the hard disk drive(s) installed in the computer. You need to enter the type number(s) when you set the hard disk drive configuration in the SETUP program.
PAGE 7
Epson EL 3S/33 Software Problems If the computer has an Epson-supplied 80MB, 120MB, or 240MB hard disk drive, select a user-defined drive type and enter the appropriate information from the table below using the SETUP program. When installing a copy-protected software package, first try the installation at high speed. If this does not work properly, select low speed by pressing the Ctrl and Alt keys and the - key on the numeric keypad simultaneously.
PAGE 8
Epson EL 3S/33 Epson EL 3S/33-8 5/28/93