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Author Topic: A2000 chipram upgrade  (Read 4932 times)

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Offline Damion

Re: A2000 chipram upgrade
« on: May 22, 2008, 01:56:54 AM »
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krakonos wrote:
Thanks Xamiche for your reply,
still need to know if you can use 8375 instead of 8372 :)


Yes, it should work fine.

-edit- 8375 will work in place of 8372 for addressing 1 MB chip, but as Xamiche says you'll have to modify the board. (Trying to find those docs ATM...)





 

Offline Damion

Re: A2000 chipram upgrade
« Reply #1 on: May 22, 2008, 02:29:03 AM »
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rkauer wrote:
Quote

krakonos wrote:
Thanks Xamiche for your reply,
still need to know if you can use 8375 instead of 8372 :)


 They are not pin-compatible.

 Short answer: No.


Yeah, I missed the part about his board being Rev. 4.1. I know 8375 will work in place of 8372 (for addressing 1 MB), but there seems to be some confusion on whether 8375/8372 is compatible with 8370. (As you say, perhaps not?) Anyhow, I believe he'd have to change J101 and cut a trace (looking at the MegaCHIP docs)... and I'm assuming the system would then see an additional 512k of (autoconfig) expansion RAM as CHIPRAM? :shrug: