Epson EL 4S/33+ Şartname

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Epson EL 4S/33+ Şartname
EL 4S/33+ Components
The following diagrams illustrate the outside of the
EL 4S/33+ system.
power inlet
AC outlet

Computer Specifications

CPU and Memory
32-bit CPU
Cyrix® or Texas Instruments® 486SLC,
33 MHz microprocessor with 16-bit data
bus
Fast and slow speeds available; fast speed
System speed
is 33 MHZ, slow speed is 8 MHz; speed
selection through SETUP program and
keyboard commands; zero wait state
memory access at fast speed; 0 or 1 wait
state memory access selectable through
SETUP
\
VGA
MOUSE
Memory
-
2MB or 4MB RAM standard on SIMMs;
expandable to 16MB (maximum) using
256KB, 1MB, and 4MB SIMMs; SIMMs
must be 30-pin, 8-bit or 9-bit, fast-page
mode type with access speed of 70ns or
faster (preferably tin-plated)
ROM
64KB system BIOS and SETUP code
located in EPROM on main system board;
32KB video BIOS located in EPROM on
main system board
Video RAM
256KB DRAM on main system board;
expandable to 512KB or 1024KB using
70ns or 80ns 44256 DIP chips
Shadow RAM
32KB or 64KB, 0 or 1 wait state access
speed; system ROM BIOS and video ROM
can be copied into RAM
Memory
Supports relocation of 256KB of memory
relocation
from A0000h to BFFFFh and D0000h to
EFFFFh to extended memory
Internal cache
1KB built into microprocessor
Math
Optional Cx83S87-33 coprocessor
coprocessor
available
Clock/calendar
Real-time clock, calendar, and CMOS
RAM socketed on main system board with
built-in battery backup
Controllers
Video
Trident® VGA controller on main system
board; provides standard VGA resolutions
with 256KB memory and extended VGA
resolutions up to 1024 x 768 in 16 colors
with 512KB memory and 256 colors with
1MB memory
Controller on main system board supports
Diskette
up to two diskette drives
Hard disk
Interface on main system board supports
up to two IDE hard disk drives with
built-in controllers; BIOS provides hard
disk auto-sensing function
Interfaces
Monitor
VGA interface for analog monitor built
into system board; 15-pin, D-shell
connector
Parallel
One standard 8-bit parallel, bidirectional
interface built into main system board;
25-pin, D-shell connector
Serial
Two RS-232C, programmable,
asynchronous interfaces built into main
system board; 9-pin, D-shell connectors
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Epson EL 4S/33+
Epson EL 4S/33+ - 1