Epson EISA Tower Product Information Guide

EISA Series Tower

Computer Specifications

Main System Board

System memory

BIOS

Shadow RAM

EISA configuration

Clock/calendar

Interfaces Serial

Parallel Mouse

Keyboard

4MB RAM standard on SIMMs; expandable using 1MB, 2MB, 4MB, or 8MB SIMMs up to 64MB (maximum); SIMMs must be 70ns, 36bit, R-pin, gold-leaded, fast-page mode type

Two-part system BIOS; one 64KB permanent

BIOS on an EPROM; one 64KB CPUdependent BIOS in a ROM device

Automatically copies the system BIOS from

ROM into RAM; shadow RAM for video BIOS and external BIOS is software selectable

8KB SRAM; battery-backup

Real-time clock, calendar, and CMOS RAM for

configuration;

Two RS-232-C ISA compatible, asynchronous; 9-pin D-shell connectors

ISA compatible, 25-pin, D-shell connector Mini DIN, 6-pin connector for PS/2

compatible mouse or other device Mini DIN, 6-pin connector for PS/2

compatible keyboard

battery backup

Option slots

Controllers Diskette

and

tape drive

Hard disk

Processor Board

CPU

Cache memory

Math coprocessor

Mass Storage Bays

Power Supply Type

Input ranges

Maximum current

Eight 32-bit EISA expansion slots (16-bit and 8-bit ISA compatible); bus-mastering option cards allowable in slots 1 through 5 and slot 8

Internal; operation and

volume

controllable

by software

Controller on the main

system board supprts up to two diskette drives in any of these formats:

‘/d

-inch, high-density, 1.2MB

‘/,-inch,

double-density, 360KB

‘/2-inch,

high-density, 1.44MB

‘/2-inch,

double-density, 720KB Also supports one optional tape drive Interface on the main system board supports

rInt;o;iDE

486SX/25

drives with embedded

board: Intel 80486SX, 25 MHz

microprocessor 486DX/33 board: Intel 80486DX, 33 MHz

microprocessor Both boards:

simulated 8 MHz and other

processor simulation speeds selectable through software or keyboard command

486SX/25 board: 8KB internal cache in the 80486SX microprocessor

486DX/33 board: 8KB internal cache in the

80486DX microprocessor; 64KB Intel 82485MA-33 Turbocache module with write

through, two-way set associative cache

memory and controller

486SX/25 board two sockets available for

optional Weitek WTL4167 and Intel 80487SX math coprocessors

486DX/33 board: internal coprocessor in the 80486DX and one socket for an optional Weitek WTL4167 coprocessor

Up to six half-height devices; two half-height or one full-height internal bays; four halfheight or one full-height and two half-height externally-accessible bays

300W, fan-cooled, automatic input voltage sensing, thermally protected

to 132 VAC and 196 to 264 VAC,

47 to 63Hz At 110 Volts, 6 Amps; at 240 Volts, 3.3 Amps

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Maximum outputs

* The +12 V peak current is limited to 30 seconds maximum

Output cables

Four main

system

board cables; six mass

storage cables

Option slot power limits

Maximum current +5 Volts For each slot

For all eight slots120 Amps

7 Amps

I l 12volts

1.5 Amps 0.75 Amps

2 Amps

-5 Volts

0.75 Amps

Keyboard

Detachable two position, 101 or 102 sculpted keys

Layout

Country-dependent main typewriter keyboard; numeric/cursor control keypad; four-key cursor control keypad; 12 function keys

-12 Volts

0.75

Amps

0.75

Amps

Main System Board Map

hard disk drive \

alternate hard disk drive LED connector

diskette drive

Environmental Requirements

Condition

Temperature

Humidity (non-condensing)

Altitude

Maximum wet bulb 68°F

wyP-&wl

41° to 95°F

5° to 35°C

20% to 80%

-330 to 9900 ft

-100 lo 3000 m 20°C

~*~‘%I

-4° to 140°F

-20° to 60°C 10% to 90%

-330 to 11880 ft -330 to 39600 ft

-100 to 3600 m 104°F

40°C

Physical Characteristics

Width

Height

weight

8.5 inches (213 mm)

19.75 inches (494 mm)

25.5 inches (638 mm)

Single diskette drive model (without keyboard): 61 Ib (27.5 kg)

Power Source Requirements

120 Volt power source requirement

North America

125V, 10A

ANSI C73.11 NEMA 5-15-P IEC 83

SOW@

range

-4° to 140°F

-20° to 60°C 10% to 90%

-100 to 12000 m 134°F

57°C

Power cold

UL/CSA Listed Type

SJ-f,

no. 18/3AWG of no. 16/3AWG, or <HAR> 300V. 10A or 13A

Main System Board Jumper

System board jumper J1 settings

Setting

Pins 1 & 2 Disable password check Pins 2 & 3

Function

Enable password check

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Processor Board Maps

486DX/33 processor

Weitek WTL4167 math

coprocessor socket

486SX/25

processor board

Weitek WTL4167 math coprocessor socket

board

Intel 80486DX 33 MH

microprocessor

(with heat sink)

processor board interface connectors

Intel 80487SX

coprocessor

cache module

Intel 80487SX microprocessor

Serial Port Connector (CN3, CN4)

Serial port connector pin assignments

Pin Signal

Data Carrier Detect

Receive

2 3 4

Data Transmit Data Data Terminal Ready not used

Pin Signal

6 Data Set Ready 7

Request To sand

8 Clear To Send

Ring Indicator

Keyboard and Mouse Connectors (CN1, CN2)

processor board interface connectors

Main System Board Connectors

Parallel Port Connector (CN5)

Pin 13

Pin 25

Parallel port connector pin assignments

Pin 14

Keyboard connector pin assignments

Mouse connector pin assignments

Pin Signal

Mouse Data

Resewed

Ground

Pin Signal 4

+5 VDC (fused)

Mouse Clock

6 Resewed

Note: Although the keyboard and mouse connectors are physically identical, they cannot be used interchangeably.

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