2500 SX/25  (250-1610)          VIDEO MEMORY            Faxback Doc. # 1133

Your computer has 256KB of video memory permanently installed on the main
logic board.

NOTE: Use the Super VGA modes only with applications designed to support them.
Some Super VGA modes require a multiple-frequency monitor, video drivers, or
additional memory.

To use the 640 x 480, 256-color graphics mode and the 1024 x 768, 16-color
graphics mode, you must increase the amount of video memory to 512KB. Use a
256KB Video Memory Upgrade kit (MX-3750) to increase the video memory to
512KB. This kit contains two 40-pin memory chips for the two video memory chip
sockets on the main logic board.

CAUTION: Incorrect installation of the video memory chips can damage the chips
or your main logic board. Install the chips carefully.

Install the video memory upgrade kit as follows:

1. Refer to "Main Logic Board Layout" to locate the two video memory chip
   sockets. To reach the video sockets more easily turn the computer so that
   the back of the computer faces you.

2. Remove one chip from the antistatic packaging. Pin 1 of the chip is
   indicated by a dot and a notch on one end. The main logic board is labeled
   1 at the Pin 1 end of the memory chip sockets.

3. Orient the chip so that the dot on the notched end of the chip aligns with
   the corner of the socket labeled 1.

4. Carefully press the memory chip into the socket. Be sure that the pins of
   the chip do not bend.

5. Repeat Steps 2 through 4 for the second memory chip.

When you restart the computer, it has 512KB of video memory. The video memory
is not checked when startup diagnostics are performed at startup.