Product Information Guide

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EPSON PROGRESSION

diskette

release

button

latch

power

button

power light

hard disk

access light

TURBO light

System speed

Memory

optional drive bay

RESET

button

ROM

power inlet

option card slots

cove

lock

serial port

Poe

Computer Specifications

CPU and Memory

CPU (on card) 486SX/25 card: Intel 486SX, 25 MHz

microprocessor soldered on CPU card;

additional socket for optional Intel

ODP486SX/25 OverDrive module to

double internal clock speed (50 MHz);

OverDrive module cannot be installed if

487SX/25 microprocessor chip is installed

in shared socket

486DX/33 card: Intel 486DX, 33 MHz

microprocessor socketed on CPU card;

additional socket for optional Intel

ODP486DX/33 OverDrive module to

double internal clock speed (66 MHz)

486DX2/66 card: Intel 486DX2,66 MHz

microprocessor socketed on CPU card;

additional socket for optional (future)

Intel OverDrive module

Video RAM

Shadow RAM

Cache

VirtualCache

Math

coprocessor

Clock/calendar

High, low, and automatic speeds available;

high speed is CPU dependent, low speed

is simulated 8 MHz speed, automatic

speed switches from high to low only for

diskette drive access; speed selection

through SETUP, keyboard command, or

ESPEED program; 0 wait state memory

access at high speed

4MB RAM standard soldered on main

system board; expandable using 1MB,

4MB, 16MB, or 64MB SIMMs to 128MB

(maximum); SIMMs must be 36-bit,

fast-page mode type with 70 ns (or faster)

access speed

128KB system BIOS ROM and SETUP code

located in FLASH memory device on CPU

card; 64KB boot ROM contained in

EPROM on main system board

1MB VRAM on main system board;

additional 1MB VRAM on optional

enhanced video daughterboard (2MB

VRAM maximum)

Automatic shadowing of system and VGA

BIOS ROM into RAM; shadow RAM

address control selectable through SETUP

8KB of internal cache (built into the

microprocessor); cache testing and address

control selectable through SETUP

Epson proprietary VirtualCache feature

automatically creates a “virtual cache”

buffer the size of maximum system

memory

486SX/25 card: socket for optional Intel

487SX, 25 MHz microprocessor chip with

built-in math coprocessor; microprocessor

chip cannot be installed if OverDrive

module is installed in shared socket

486DX/33 card: math coprocessor built

into the 486DX microprocessor; additional

socket for optional Weitek 4167, 33 MHz

math coprocessor

486DX2/66 card: math coprocessor built

into the 486DX2 microprocessor;

additional socket for optional Weitek 4167,

33 MHz math coprocessor

Real-time clock, calendar, and CMOS

RAM socketed on main system board;

separate battery backup

10/19/92

Epson Progression-l

Summary of content (8 pages)

PAGE 1
EPSON PROGRESSION diskette release latch .
PAGE 2
EPSON PROGRESSION OverDrive Module 486SX/25 card: socket for optional Intel ODP486SX/25 OverDrive module to double internal clock speed (50 MHz); module cannot be installed if 487SX/25 microprocessor chip is installed in shared socket Speaker Internal; operation controllable through SETUP and volume selectable by software Alternate VGA IBM compatible VGA pass-through interface built into main system board; 26-pin connector 486DX/33 card: socket for optional Intel ODP486DX/33 OverDrive module to double
PAGE 3
EPSON PROGRESSION Physical Characteristics Main System Board Map Width 17 inches (432 mm) Depth 16 inches (406 mm) Height 6 inches (153 mm) Weight Single diskette drive model (without keyboard): 26 lb (11.8 kg) VGA monitor keyboard port Poe \ ..r.rL..l r.-..+ I -*sl port port JP2 .
PAGE 4
EPSON PROGRESSION VGA Daughterboard Connectors (CN23, CN24, CN25, CN26) Serial Port Connector (CN3) There are four VGA daughterboard connectors. The connectors (36-pin headers) provide the video interface between the board and the video controller. They are physically identical, but the pinouts for each are different.
PAGE 5
EPSON PROGRESSION DMA Channels I/O Port Addresses (continued) I Floppy disk drive controller primary 3F0 - 3W ~Berialportl 3F8 - 3FF *These I/O address ports are configuration registers. Jumper Settings Hardware Interrupts CTRL1 IRQO IRQl CTRL2 Function Timer Output 0 Keyboard See the Main System Board Map on page 3 for the location of the jumpers on the main system board.
PAGE 6
EPSON PROGRESSION OverDrive Modules Hard Disk Drive Types If you have the 486SX/25 or 486DX/33 CPU card, you can install an Intel OverDrive module on the card to effectively double the internal clock speed of the computer’s microprocessor. Although there is an OverDrive socket on the 486DX2/66 card, there is no OverDrive module available for it at this time. The following table lists the types of hard disk drives you can use in the computer.
PAGE 7
EPSON PROGRESSION P When using a software package that uses a key disk as its copy-protection method, try loading it at high speed. If this does not work, enable Auto Speed in SETUP. Installation/Support Tips Power Power-on Password This computer has an automatic input voltage sensing power supply (between 115V, for USA and Canadian use, and 230V, for use in other countries). There is no manual switch. 0 Make sure that you do not forget the Power-on password you set up.
PAGE 8
EPSON PROGRESSION Epson Progression-8 10/19/92