EPSON Equity 4+

Video Memory

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

I Part number

 

GoldstaP

1 GM71 C4256AZ-70

 

Micron®

1 MT4C42562-6, MT4C4256Z-7

 

Samsung@

1 KM44C25fXZ-6, KM44C256CZ-7

1

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.

Hard Disk Drive Types

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

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

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

t Hard disk drive supported in translate mode $ Epson drives

10/1/93

EPSON Equity 4+ 7