Epson 486C - Manual (Page 7)

EPSON Endeavor 486C
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
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
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.
8KB or 32KB SRAM chips can be installed. Bank 0 must be
filled before Bank 1. The SRAM type used for RAM in
locations U15 and U16 must match the type installed in the
banks. The table below shows the possible configurations.
Cache Memory Configuration
7/15/93 EPSON Endeavor 486C-7