PAGE UPDATED 2.4.2010

A4000 MOTHERBOARD 16MB FAST WITH 2 SIMMS

A4000 Rev B has following SIMM slots CHIP, BANK 0, BANK 1, BANK 2 and BANK 3
A4000cr Rev D has following SIMM slots BANK 0, BANK 1, BANK 2 and BANK 3
Both of them I have tested to be able work with two 8MB simms.

Requirements:
Instructions:

Remove SIMMs from BANKs 0, 1, 2 and 3.

Add 8MB SIMM memory to BANK 1 and BANK 3.


BANK numbers are on silkscreens between the slots (not visible in this picture because they are under SIMMs).
BANK 3 and BANK 1 are the first and the third slot counted from motherboard left edge regardless if CHIP slot is present or not.

This is very handy solution if you happen to have physically broken or corroded BANK 0 and BANK 2. It should also consume less power since there are less SIMMs consuming electricity. :)

The SIMMs I use here are 60ns. You could also use 50ns 8MB, but I have never seen 50ns SIMMs that are smaller than 64MB.

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