Epson Endeavor User Manual download pdf

EPSON Endeavor L

power

(SPEED)

hard disk

diskette

power

light

accesslight drive

button

Memory

bay for hard disk, diskette drive,

CD-ROM drive, tape drive, or other

option card slots

Video RAM

ROM

Shadow RAM

Cache

Math

coprocessor

Computer Specifications

Clock/calendar

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

Controllers

Video

Diskette

Hard disk

Interfaces

Monitor

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

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

128KB system and video BIOS and SETUP

code located in EPROM on main system

board

512KB or 1MB DRAM standard on main

system board; 512KB expandable to 1MB

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

chip

Supports shadowing of system and video

BIOS ROM into RAM

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

8, 15ns tag chips

For SX-based systems, can install an

80487SX processor with math coprocessor

support; math coprocessor built into

DX-based and Pentium OverDrive

processors

Real-time clock, calendar, and CMOS

RAM socketed on main system board with

external 3.6V battery backup

Cirrus Logic CD5428 high speed super

VGA local bus on-board controller with

True Color support

Controller on main system board supports

up to two diskette drives or one diskette

drive and one tape drive

Interface on main system board supports

up to two IDE hard disk drives with

built-in controller

Local bus SVGA interface for fixed or

multi-frequency monitor built into system

board; 15-pin, D-shell connector

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Summary of Contents

Page 1 - Computer Specifications

EPSON Endeavor Lpower(SPEED)hard diskdiskettepowerlightaccesslight drivebuttonMemorybay for hard disk, diskette drive,CD-ROM drive, tape drive, or ot

Page 2 - EPSON Endeavor L

EPSON Endeavor LlActive low logicInstallation/Support TipsInstalling Diskette DrivesMake sure that the drive type has been correctly selected inthe SE

Page 3 - Major Subassemblies

EPSON Endeavor LSVGA featureconnectorParallelSerialKeyboardMouseOption slotsSpeakerMass storageDiskette drivesHard diskdrivesOther devicesKeyboardSETU

Page 4

EPSON Endeavor LMajor SubassembliesJ3SVGAfeatureconnector \DIP -switchesmicro- -processorbatteryJumper and DIP Switch SettingsJumper settings1 Jumper

Page 5 - External Cache

Page 6 - Microprocessor Upgrades

EPSON Endeavor L-System board components and connectorsSIMM InstallationYour computer comes with 4MB of memory on the systemboard. You can increase th

Page 7 - DMA Assignments

EPSON Endeavor LMicroprocessor UpgradesThe computer’s processor can be upgraded by replacing theexisting microprocessor with a faster one. You can eit

Page 8

EPSON Endeavor LIDE hard disk driveHardware InterruptslCS (cable selection) can he jumpered for any configuration. When CS is used,the drive Is a mast

Page 9

EPSON Endeavor LSystem l/O Address Map Connector Pin AssignmentsParallel port connector pin assignments (CN8)Serial port connector pin assignments (CN

Page 10 - Information Reference List

EPSON Endeavor LPower supply connector pin assignments (CN1)Diskette drive connector pin assignments (CN11)**All odd-numbered pins are groundsHard dis