Epson ActionDesk 4000 Panduan Informasi Produk
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Halaman Cetak
hard disk
speed access
light
(TURBO)
light
power
\
monitor cable
AC inlet
AC outlet
Computer Specifications
CPU and Memory
32-bit CPU
Intel 486SX/25, 486SX/33, 486DX/33,
486DX2/50, or 486DX2/66 microprocessor
System speed
Fast and slow speeds available; fast is the
speed of the microprocessor, slow is
8 MHz; speed selection through keyboard
commands or jumper setting
Memory
4MB RAM standard on a SIMM;
expandable to 64MB using 1MB, 2MB,
4MB, 8MB, 16MB, and 32MB SIMMs;
SIMMs must be tin-plated, 72-pin, 32-bit
or 36bit, fast-page mode type with access
speed of 80ns (with 1 wait state) or 70ns or
faster (with 0 wait state)
optional drive bay
I
reset button
diskette drive
MOUSE
PARALLEL
ROM
Video RAM
power
button
Shadow RAM
Cache
Math
coprocessor
Clock/calendar
Controllers
Video
Diskette
Hard disk
Interfaces
Monitor
Parallel
Serial
Keyboard
Mouse
9/15/93
Epson ActionDesk 4000
128KB system BIOS, video BIOS, and
SETUP code located in EPROM on main
system board
1MB DRAM on main system board;
expandable to 2MB using two ZIP chips
Supports shadowing of system and video
BIOS ROM into RAM
8KB of internal cache; supports 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
On DX and DX2 systems, math
coprocessor built into the microprocessor
Contained in the 82C491 system controller
chip along with 64 bytes of CMOS RAM
backed up by a soldered NiCad
rechargeable battery
Cirrus GD5426 high speed super VGA
local bus controller with True Color
support; with the standard 1MB of video
RAM, supports resolutions up to
1280 x 1024 in 16 colors; with 2MB of
video RAM installed, supports resolutions
up to 1280 x 1024 in 256 colors
Controller on main system board supports
up to two diskette drives
High-speed, 32-bit local bus IDE interface
on main system board supports up to two
IDE hard disk drives with built-in
controller; BIOS provides hard disk
auto-sensing function
VGA interface for fixed or multi-
frequency monitor built into system
board; 15-pin, D-shell connector
One standard &bit parallel interface built
into main system board; 25-pin, D-shell
connector
Two RS-232C, programmable,
asynchronous interfaces built into main
system board; 9-pin, D-shell connectors
PS/2 compatible keyboard interface built
into main system board; 6-pin, mini DIN
connector
PS/2 compatible mouse interface built
into main system board; 6-pin mini DIN
connector
Epson ActionDesk 4000-1