EPSON Endeavor L

power

hard disk

diskette

power

(SPEED)

light

accesslight

drive

button

 

 

 

bay for hard disk, diskette drive, CD-ROM drive, tape drive, or other

option card slots

Computer Specifications

CPU and Memory

32-bit CPU

Intel 486SX, DX, or DX2 processor

 

upgradable to faster, more powerful

 

processors, including SX2, DX4, or

 

Pentium OverDrive processors; DX4

 

processors require an adapter board to

 

regulate voltage

Energy Star

Low power consumption, Energy Star

 

compliant in base configurations

 

(consumes less than 30 Watts)

System speed

Fast and slow processor speeds available;

 

fast speed is the speed of your processor

 

and slow speed is 8 MHz; 0 wait state

 

memory access at fast speed

Press Ctrl, Alt, and - to select slow speed or

Ctrl, Alt, and + to select fast speed (use the

-or + on the numeric keypad); default system speed selectable through SETUP

 

ISA bus speed for all processors is

 

8.3 MHz; local bus video speed reflects the

 

speed of the processor; at fast speed,

 

DX2/50 and DX2/66 processors run

 

internally at 50 and 66 MHz, but run

 

externally at 25 and 33 MHz; local bus

 

speeds for DX/2 processors are 25 and

 

33 MHz respectively

Memory

4MB RAM standard on system board;

 

expandable to 36MB using 1MB, 4MB, and

 

16MB SIMMs; SIMMs must be 72-pin,

 

32-bit or 36-bit, fast-page mode type with

 

an access speed of 70ns

ROM

128KB system and video BIOS and SETUP

 

code located in EPROM on main system

 

board

Video RAM

512KB or 1MB DRAM standard on main

 

system board; 512KB expandable to 1MB

 

using a 256 x 16-bit, 40-pin SOJ DRAM

 

chip

Shadow RAM

Supports shadowing of system and video

 

BIOS ROM into RAM

Cache

8KB of internal cache on processor;

 

supports 32KB, 64KB, 128KB, or 256KB of

 

external cache using 28-pin, 8 x 8, 20ns

 

DIP chips or 28-pin, 32 x 8, 20ns DIP chips

 

and 28-pin, 32 x 8, 15ns tag chips

Math

For SX-based systems, can install an

coprocessor

80487SX processor with math coprocessor

 

support; math coprocessor built into

 

DX-based and Pentium OverDrive

 

processors

Clock/calendar Real-time clock, calendar, and CMOS

 

RAM socketed on main system board with

 

external 3.6V battery backup

Controllers

 

Video

Cirrus Logic CD5428 high speed super

 

VGA local bus on-board controller with

 

True Color support

Diskette

Controller on main system board supports

 

up to two diskette drives or one diskette

 

drive and one tape drive

Hard disk

Interface on main system board supports

 

up to two IDE hard disk drives with

 

built-in controller

Interfaces

 

Monitor

Local bus SVGA interface for fixed or

 

multi-frequency monitor built into system

 

board; 15-pin, D-shell connector

3/94

EPSON Endeavor L - 1