Simm Installation; External Cache; Video Memory - Epson ActionDesk 4000 Specifications

SIMM Installation

Your computer comes with 4MB of memory on a SIMM. You
can increase the memory up to 64MB by installing 1MB,
2MB, 4MB, 8MB, 16MB, and 32MB SIMMs in the computer's
two SIMM sockets. The following table shows the possible
SIMM configurations; do not install memory in any other
configuration.
SIMM configuration
Bank 0
IX
16MB
16MB
16MB
16MB 16MB
X
1MB
16MB
Use tin-plated (preferably), 32-bit or 36-bit, 72-pin, fast-page
mode SIMMs that operate at an access speed of 70ns or
faster. Be sure all the SIMMs operate at the same speed.

Video Memory

This system comes with 1MB of video memory. You can
increase the video memory to 2MB by installing two video
DRAM, 40-pin, 256KB x 16-bit, ZIP (Zig-zag Inline Package)
chips.
For the memory to work properly, you must install one chip
in each socket.
You can install 64KB, 128KB, or 256KB of external cache on
this system.
18MB
20MB
24MB
32MB
32MB
33MB
34MB
36MB
40MB
48MB
For the cache memory to work properly, you must install
chips in the following configuration (each bank contains four
cache memory sockets).
Cache memory configurations
12/93
Resolutions and Colors
256
1
2
1280x1024 1 16
2 256
*Non-interlaced and interlaced
**Interlaced

External Cache

8x8, 20ns DIP chips, and one 8x8, 20ns tag chip
32 x 8, 20ns DIP chips, and one 8 x 8, 20ns tag chip
28-pin, 32 x 8, 20ns DIP chips, and one 32 x 8, 20ns tag chip
tag chip is a 15ns chip.
U20,21,22,23 U 2 9 , 3 0 , 3 1 , 3 2
8 K x 8
8 K x 8
X
3 2 K x 8
32KX8 3 2 K x 8
EPSON ActionDesk
43.5/60/70/72 8 bits/pixel*
43.5 16 bits/pixel*
43.5 4 bit planes**
43.5 8 bits/pixel**
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U 3 6 Total cache
8 K x 8
8 K x 8 128KB
3 2 K x 8 256KB
EPSON ActionDesk 4000+ - 5
4000+
I