Acer 486 User Manual page 14

1.8 Upgrading VGA Memory
Observe ESD precautions when installing
components. See section 1.2.
The VGA memory is upgradable to 1 or 2 MB depending on your
onboard VGA chip. The system board may come with either a GD-
5424 or a GD-5429 VGA chip. If your board has a GD-5424, then your
VGA memory is expandable to 1 MB only. If your system board has a
GD-5429 VGA chip, then you can further expand your VGA memory to
2 MB. The additional memory allows your VGA to display higher
resolutions and more colors when the appropriate VGA driver is used.
Follow these steps to upgrade the VGA RAM to 1 MB:
1. Locate the VGA memory expansion sockets on the system board
labeled U12, U13, U15 and U16. See Figure 1-7.
2. Gently but firmly insert a 44256 DRAM (256 Kb x 4, 70 ns DIP)
chip into each of the VGA memory expansion sockets.
To upgrade the VGA RAM to 2 MB:
1. Locate sockets U9 and U10 on the system board.
2. Insert a 512460 (256 Kb x 16, 70 ns ZIP) DRAM chip into each
socket. See Figure 1-7.
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