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06 August 2018, 18:45
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#1 |
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Posts: n/a
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Using rev 8 chips on a 6a board?
Hi all
I’ve got an A500 plus with a rev 8a board which may be beyond repair, the battery leak has mushed a large chunk of board. The chips however are good so I bought a cheap unpopulated Rev 6a A500 board, could someone tell me or point me in the right direction for if any of the chips won’t work on the older board. It’s only the socketed chips missing, the ram and the logic chips are still present. Thanks for any advice! Last edited by Guchion; 06 August 2018 at 18:49. Reason: Grammar correction |
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06 August 2018, 18:48
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#2 |
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Registered User
Join Date: Jul 2018
Location: Birmingham, UK
Posts: 185
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From what I understand, Gary might not be too happy being relocated.
He can be kind of a jerk. |
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06 August 2018, 19:42
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#3 |
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Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,925
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Every other chip fits directly, but the Agnus has a different pinout. The Rev6 board can be adapted.
Pinouts here: https://en.wikipedia.org/wiki/MOS_Technology_Agnus |
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06 August 2018, 21:36
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#4 |
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Posts: n/a
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Cool, thanks for that so i'll either have to source a compatible Agnus or mod away.
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07 August 2018, 10:25
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#5 |
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ex. demoscener "Bigmama"
Join Date: Jun 2012
Location: Fyn / Denmark
Posts: 1,643
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Maybe there is a 2MB chip ram thingie for the 6a that will accept the the agnus from the 8a? then you hit two birds with one stone.
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07 August 2018, 10:56
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#6 |
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Posts: n/a
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Yeah, I had a quick look for something like that but came up short.
I did find a thread about using the a3000 Agnus for 2mb support, but they are much rarer. I'd be tempted to make up an adapter, but plcc sockets are hard enough to come by, let alone a male type. Guess i'm just going to have to source a compatible Agnus, not many on ebay at the moment though. |
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07 August 2018, 11:02
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#7 |
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Posts: n/a
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Although I say they are hard to find, and then I find them... I wonder if theres a demand for this, I don't think it would take much to make an adapter...
Well at £15 for the plug, plus a socket, plus a board, unless theres a bunch of people really desperate to upgrade thier rev6 to 2mb chip ram using a a500 plus agnus, is cheaper just to buy a original agnus. Last edited by Guchion; 07 August 2018 at 11:12. |
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07 August 2018, 12:58
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#8 | |
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Registered User
Join Date: Apr 2018
Location: Poland
Posts: 36
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Quote:
If you're not into it, and want to buy a fitting Agnus, I might be interested in buying yours for a fair prize 
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07 August 2018, 16:11
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#9 |
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Posts: n/a
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Interesting! Thanks for that. I'll bear you in mind if I end up with one spare
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