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Epson Computer - User Manual

Epson Computer
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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
x
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
3/94 EPSON Endeavor L - 1
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Epson Computer Specifications

General IconGeneral
BrandEpson
ModelComputer
CategoryComputer Hardware
LanguageEnglish

Summary

EPSON Endeavor L System Overview

Memory System Details

Details on system memory, including RAM standard, expansion, and SIMM requirements.

ROM and BIOS Information

Information on system and video BIOS and SETUP code located in EPROM.

Video RAM Configuration

Details on standard and expandable Video RAM (DRAM) on the system board.

Shadow RAM Functionality

Explains the support for shadowing system and video BIOS ROM into RAM.

Cache Memory Specifications

Information on internal and external cache support and chip requirements.

Math Coprocessor Support

Details on installing an 80487SX processor or built-in coprocessors.

Clock and Calendar Feature

Description of the real-time clock, calendar, and CMOS RAM with battery backup.

Computer Specifications

32-bit CPU Details

Information on the Intel 486SX, DX, or DX2 processor and upgrade options.

Energy Star Compliance

Details on low power consumption and Energy Star compliance.

System Speed Settings

How to select between fast and slow processor speeds and default settings.

Video Controller

Cirrus Logic CD5428 high speed VGA local bus controller with True Color.

Diskette Controller

Controller on main system board supporting up to two diskette drives or one tape drive.

Hard Disk Controller

Interface supporting up to two IDE hard disk drives with built-in controller.

Monitor Interface

Local bus SVGA interface for monitors with a 15-pin connector.

System Connectivity and Ports

SVGA Feature Connector

SVGA pass-through interface built into the main system board.

Parallel Port

One standard 8-bit parallel interface, selectable I/O address, 25-pin connector.

Serial Ports

Two RS-232C, programmable, asynchronous interfaces with 9-pin connectors.

Keyboard and Mouse Ports

PS/2 compatible keyboard and mouse interfaces with 6-pin mini DIN connectors.

Option Slots Overview

Four 16-bit (or 8-bit) I/O expansion slots, ISA compatible, 8.33 MHz bus speed.

Internal Speaker

Internal, piezo-electric speaker connected to the main board.

Mass Storage Options

Diskette Drive Options

Details on 3.5-inch and 5.25-inch diskette drives and their storage capacities.

Hard Disk Drive Installation

Information on 3.5-inch form factor hard disk drives and mounting bays.

Other Storage Devices

Support for half-height tape drives, CD-ROM drives, or optical drives.

System Configuration and Security

System Security Features

Password protection for system boot and keyboard unlock, definable hot keys.

Virus Protection

Write protection feature for the boot sector of the hard disk drive.

SETUP Program Access

How to access the SETUP program stored in ROM via the Delete key.

Processor Upgrades and Compatibility

Microprocessor Upgrade Options

Details on replacing the existing processor with faster or compatible models.

Hard Disk Drive Types

Table listing supported hard disk drive types and their parameters for SETUP.

Drive Option Information

Specific drive option parameters for 1-inch IDE drives from various manufacturers.

Hardware Interrupts and DMA

Hardware Interrupt Assignments

List of IRQ numbers and their assigned functions and devices.

System Memory Map Overview

Diagram showing the memory map, including ROM, extended, and conventional memory.

DMA Assignments

List of DMA levels and the devices assigned to them.

System I;O Address Map and Pin Assignments

System I;O Address Map

Table detailing hex addresses and assigned system devices and controllers.

Parallel Port Pin Assignments

Pinout details for the parallel port connector (CN8).

Serial Port Pin Assignments

Pinout details for the serial port connectors (CN9, CN10).

Keyboard Connector Pin Assignments

Pinout details for the keyboard connector (CN5).

Mouse Connector Pin Assignments

Pinout details for the mouse connector (CN4).

VGA Port Connector Pin Assignments

Pinout details for the VGA port connector (CN13).

VGA Feature Connector Pin Assignments

Pinout details for the VGA feature connector (CN14).

Connector Pinouts and Booting Sequence

Power Supply Connector Pin Assignments

Pinout details for the power supply connector (CN1).

Diskette Drive Connector Pin Assignments

Pinout details for the diskette drive connector (CN11).

Hard Disk Drive Connector Pin Assignments

Pinout details for the hard disk drive connector (CN12).

Option Card Riser Board Connector Pin Assignments

Pinout details for the option card riser board connector (CN2).

Option Slot Connector Pin Assignments

Pinout details for the option slot connectors.

Speaker Connector Pin Assignments

Pinout details for the speaker connector (SP1).

Battery Connector Pin Assignments

Pinout details for the battery connector (CN3).

SIMM Socket Pin Assignments

Pinout details for SIMM sockets (SIMM1, SIMM2).

Booting Sequence Configuration

Instructions for setting the booting sequence in SETUP if the computer fails to boot.

Password Management

Instructions for setting and disabling the system password and hot key.

Installation and Support Information

Installing Diskette Drives

Guidance on correctly selecting the drive type in the SETUP program for diskette drives.

Installing Hard Disk Drives

Instructions for selecting hard disk drive types and using user-defined types.

Software Installation Tips

Recommendations for installing copy-protected software at high or low speeds.

Information Reference List

List of available technical information bulletins and related documentation.

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