Epson EISA Tower Руководство по информации о продукте

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Computer Specifications

Main System Board

4MB RAM standard on SIMMs; expandable

System memory

using 1MB, 2MB, 4MB, or 8MB SIMMs up to

64MB (maximum); SIMMs must be 70ns, 36-

bit, R-pin, gold-leaded, fast-page mode type

Two-part system BIOS; one 64KB permanent

BIOS

BIOS on an EPROM; one 64KB CPU-

dependent BIOS in a ROM device

Automatically copies the system BIOS from

Shadow RAM

ROM into RAM; shadow RAM for video

BIOS and external BIOS is software selectable

8KB SRAM; battery-backup

EISA configuration

Real-time clock, calendar, and CMOS RAM

Clock/calendar

for

configuration;

Interfaces

Two RS-232-C ISA compatible,

Serial

asynchronous; 9-pin D-shell connectors

ISA compatible, 25-pin, D-shell connector

Parallel

Mini DIN, 6-pin connector for PS/2

Mouse

compatible mouse or other device

Mini DIN, 6-pin connector for PS/2

Keyboard

compatible keyboard

EISA Series Computers

battery backup

Eight 32-bit EISA expansion slots (16-bit and

Option slots

8-bit ISA compatible); bus-mastering option

cards allowable in slots 1 through 5 and slot 8

Internal; operation and

by software

Controllers

and

Controller on the main

Diskette

supprts up to two diskette drives in any of

tape drive

these formats:

Also supports one optional tape drive

Interface on the main system board supports

Hard disk

Processor Board

CPU

486SX/25

microprocessor

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

microprocessor

Both boards:

processor simulation speeds selectable

through software or keyboard command

Cache memory

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

Math coprocessor

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

Mass Storage Bays

Up to six half-height devices; two half-height

or one full-height internal bays; four half-

height or one full-height and two half-height

externally-accessible bays

Power Supply

300W, fan-cooled, automatic input voltage

Type

sensing, thermally protected

Input ranges

47 to 63Hz

Maximum current

At 110 Volts, 6 Amps; at 240 Volts, 3.3 Amps

1/92

EISA Series Tower

volume

system board

360KB

high-density, 1.44MB

double-density, 720KB

board: Intel 80486SX, 25 MHz

simulated 8 MHz and other

to 132 VAC and 196 to 264 VAC,

controllable

Tower-l