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Video memory, Cache memory, Hard disk drive types – Epson Equity 4+ User Manual

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EPSON Equity 4+

Video Memory

Hard Disk Drive Types

If the computer has 512KB of video memory, you can install

four 256K x 4 bit, 70ns, 20-pin DRAM ZIP (Zig-zag Inline

Package) chips to increase the video memory to 1MB. The

following table lists compatible DRAM ZIP chips.

Supported Video ZIP Chips

Manufacturer

Part number
GM71

Micron

®

MT4C42562-6,

Cache Memory

Additional cache memory can be installed in eight sockets in

Bank 0 and Bank 1 on the main system board. The figure

below shows how the SRAM are distributed.

SRAM must,
match type \
in banks

\

\

8KB or 32KB SRAM chips can be installed. Bank 0 must be

filled before Bank 1. The SRAM type used for dirty RAM and

tag RAM must match the type installed in the banks. The

table below shows the possible configurations.

Cache Memory Configuration

The table below lists types of hard disk drives supported by

the computer. Check this table and the hard disk manual to

find the correct type number(s) for the hard disk drive(s)

installed in the computer. Enter the type number(s) when you

set the hard disk drive configuration in the SETUP program.

Hard Disk Drive Types

Actual size when formatted may be slightly different than the size listed on the
drive label

Hard disk drive supported in translate mode

Epson drives

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EPSON Equity 4+ 7