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Introduction
Your new Epson® EL 4S/33 computer is a high-performance
system offering flexibility and expandability in a compact
design. It provides the following features:
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Cyrix® Cx486SLC™ 33 MHz microprocessor
2MB or 4MB of internal memory, expandable to 16MB
System and video BIOS shadow RAM
256KB of on-board video memory, expandable to 512KB or
1024KB
Built-in VGA port
Two built-in serial ports, one built-in parallel port, and one
built-in game port
Built-in PS/2 compatible keyboard port
Three 16-bit full-length and two 8-bit half-length ISA option
slots
Support for up to three mass storage devices.
The Cyrix Cx4S6SLC microprocessor is 486SX instruction
set-compatible. It features a 32-bit internal/l&bit external data
path and is 3S6SX bus-compatible. The shadow RAM feature
allows your system to speed up processing by moving the
system and video BIOS into the RAM area of memory.
Using the built-in interfaces, you can connect most of your
peripheral devices directly to the computer so you do not have
to install option cards. You can use the option slots to enhance
your system with extra functions such as a modem card, a
network controller card, or additional interface ports.
Introduction 1