Controllers – Epson Endeavor WG User Manual

Page 159

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Video RAM

1MB VRAM on main system board

Shadow RAM

Automatic shadowing of system and VGA

BIOS ROM into RAM; shadow RAM

address control selectable through SETUP

Cache

Virtual cache

Math

coprocessor

Clock/

calendar

Controllers

Video

Diskette

Hard disk

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

On 4DX2/50 and 4DX2/66 systems, math

coprocessor built into the microprocessor

Real-time clock, calendar, and CMOS

RAM on main system board; separate

battery backup

Chips and Technologies Wingine VGA

controller on main system board; provides

resolutions up to 1024 x 768

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 controllers

A-2

Specifications

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