numeric coprocessor
Computer Specifications
Main Unit
CPU
486SLC microprocessor; 33 MHz (and
simulated 8 MHz) clock speed; 1 MHz in
Suspend mode
Cache
1KB internal two-way set associative cache
System memory 4MB standard, 2MB soldered on main
system board and one 2MB memory
module; expandable to 8MB by replacing
the 2MB memory module with a 6MB
memory module; the first 640KB is
conventional memory and 128KB is used
for shadow RAM; the rest can be used as
extended or expanded memory
ROM BIOS
128KB on a single one-time programmable
ROM (includes system BIOS, VGA BIOS,
and the SETUP program)
Video RAM
256KB, 80ns video memory on main
system board; 256KB x 4 frame buffer
Shadow RAM
Clock/
calendar
Numeric
coprocessor
Controllers
Diskette drive
Hard disk
Video
PCMCIA
Speaker
Interfaces
External VGA
Parallel
Serial
Pointing device
or external
keyboard
AC adapter
Input Devices
Keyboard
Trackball
7/27/93
EPSON ActionNote 4000
System shadowed at F0000 to FFFF, 64KB;
VGA BIOS shadowed at E0000 to E8000,
32KB
Real-time clock, calendar, and CMOS
RAM for configuration backed up by
built-in Dallas® DS 1287 or compatible
clock chip
Socket for optional Cyrix® Cx 83S87
coprocessor
Built-in controller for one external 3.5-inch
1.44MB diskette drive; supports 1.44MB
and 720KB diskette formats
Built-in controller for removable internal
hard disk drive
Cirrus® GD6410B 16-bit VGA controller
fully backward compatible with CGA and
EGA; supports a standard monochrome
LCD with a maximum resolution of
640x480x64 shades of gray and an
external monitor with resolutions up to
800 x 600 x 16 colors; simultaneous LCD
and CRT operation
Databook® DB86082 PCMCIA version 2.0
controller; Type II connector; supports
Type I and Type II memory and I/O cards
Built-in ISA compatible speaker controller;
internal
15-pin, D-sub, female connector for
external analog VGA or SVGA monitor
Centronics® compatible, 25-pin, D-sub,
female connector; standard 8-bit parallel
RS-232C, programmable, asynchronous,
9-pin, D-sub, male connector
6-pin, mini-DIN connector for a PS/2®
compatible pointing device or keyboard;
keyboard supported directly, pointing
device requires adapter
DC input port for external AC adapter;
4-pin, mini-DIN connector
79/80 (US) keys; embedded numeric
keypad and F11 and F12 keys; inverted T
cursor control key layout
Built-in, two-button trackball
ActionNote 4000-1