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Simm installation, Video memory, External cache – Epson Computer Hardware User Manual

Page 5: Epson endeavor l

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EPSON Endeavor L

System board components and connectors

SIMM Installation

Your computer comes with 4MB of memory on the system

board. You can increase the memory up to 36MB by installing

1MB, 4MB, and 16MB SIMMs in the computer’s two SIMM

sockets. The following table shows the possible SIMM

configurations. You can install SIMMs in either SIMM socket.
SIMM
configuration

On-board

SIMM1

SIMM2

Total memory

4MB

None

None

4MB*

4MB

1MB

4MB

1MB

4MB

4MB

4MB

4MB

4MB

16MB

4MB

16MB

4MB

16MB

4MB

16MB

None
1MB
None

4MB

None
1MB

4MB

16MB

5MB
6MB
8MB

12MB

20MB
21MB
24MB
36MB

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Standard memory on the system board

Use only 32-bit, 72-pin, fast-page mode SIMMs that operate

at an access speed of 70ns. If 32-bit SIMMs are unavailable,

you can use 36-bit SIMMs instead.

Video Memory

This system comes with 512KB or 1MB of video memory. You

can increase the video memory to 1MB by installing a video

DRAM, 40-pin, 256KB x X-bit, SOJ chip.

Video resolutions and colors

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Non-interlaced and interlaced

** Interlaced

External Cache

EPSON Authorized Servicers can install 32KB, 64KB, 128KB,

or 256KB of external cache on this system.

To install 32KB or 64KB of external cache, use SRAM,

28-pin, 8 x 8, 20ns DIP chips
To install 128KB or 256KB of external cache, use SRAM,

28-pin, 32 x 8, 20ns DIP chips

For all configurations of external cache, use two 28-pin,

32 x 8, 15ns tag chips
If you install external cache, make sure you set jumpers J5,

J6, J7, J8, and J9 as described on page 3.

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

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EPSON Endeavor L - 5