PSB No: S-0164
Page: 5 of 10
VIDEO
Q9. What video adapter comes standard (built-in) with the Epson Endeavor
A.
Q10.
A.
486C computer?
The Epson Endeavor 486C series computers utilize a Cirrus GD5422 VGA
graphics controller as its built-in video adapter. These computers include
512KB of video memory which may be upgraded to a full 1 MB of memory
by installing pluggable memory chips.
The Cirrus VGA graphics controller is 100% hardware and BIOS-
compatible with IBM® VGA display standards.
What type of RAM chips are used to upgrade the video memory to a
full 1MB on the Epson Endeavor 486C computer?
Increasing the Epson Endeavor 486C series computer’s video memory
requires four 256K x 4 bit, 70ns 20-pin DRAM ZIP (Zig-zag lnline
Package) chips. These chips install on the computer’s main logic board in
sockets VM00, VM01, VM02 and VM03.
To ensure compatibility, we have tested the following DRAM ZIP chips and
confirmed that they operate properly when upgrading the video memory:
Supported Video ZIP Chips
MANUFACTURER
PART NUMBER
Goldstar®
GM71C4256AZ-70
Micron®
MT4C42562-6, MT4C4256Z-7
Samsung®
KM44C256CZ-6, KM44C256CZ-7
