First post, by retro games 100
- Rank
- l33t
If I set my 486 mobo's cache memory to "enabled", it hangs during POST. Because of this problem, I need to investigate if any of its cache chips are defective. The mobo's cache chips are as follows -
9 chips in total. 1 chip is in the TAG slot, the other 8 are in the cache memory slots. All 9 chips are physically the same size.
TAG slot =
UM61256FK-15
9642G
R52631
1st row of cache chips =
UM61256FK-15
9642G
R52631
UM61256FK-15
9642G
R52631
UM61256FK-15
9634T
MCL04
UM61256FK-15
9634T
MCL04
Please note - these 4 chips don't entirely fill up their slots. I guess that's because they are not the big "512k cache memory chips", but instead are smaller memory chips, for "256k cache memory"
Please also note - I think it's strange that the TAG chip is exactly identical to that of the first two cache chips.
2nd row of cache chips =
UM61256FK-15
9634T
MCL04
UM61256FK-15
9634T
MCL04
UM61256FK-15
9634T
MCL04
UM61256FK-15
9634T
MCL04
Please note - these 4 chips do completely fill up their cache slots.
My question to the group - please can someone recommend some testing strategies for me to do, so that I can understand which chip(s) might be defective. I have a box of old cache chips which I pulled off some old 486 mobos I was about to throw out. Perhaps I could use some of these?
Thanks a lot for any ideas. 😀