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Author Topic: A2000 chipram upgrade  (Read 4906 times)

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Offline krakonosTopic starter

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A2000 chipram upgrade
« on: May 21, 2008, 08:08:12 PM »
Hi@all,
I have an A2000 (rev.4.1) and I would like to upgrade from 512KB chipram to 1MB. I have an Agnus 8375. Can I use it without any adapter (like DKB megachip)? I don't need 2MB chip, just 1MB. Or have I to buy 8372 Agnus?
And can I simply replace the old Agnus with a new one?
Or are there some special instructions?
Thanks much.  
 

Offline krakonosTopic starter

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Re: A2000 chipram upgrade
« Reply #1 on: May 22, 2008, 01:21:39 AM »
Thanks Xamiche for your reply,
still need to know if you can use 8375 instead of 8372 :)
 

Offline krakonosTopic starter

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Re: A2000 chipram upgrade
« Reply #2 on: May 22, 2008, 10:45:09 AM »
Thanks guys for all your help,

so I'll try to switch the J101 to 2-3 position
and cut the J500 trace and we will see...

Btw, the old Agnus is 8371 (318071-01)
and the new one is 8375 (390544-01).
 

Offline krakonosTopic starter

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Re: A2000 chipram upgrade
« Reply #3 on: May 22, 2008, 11:24:11 AM »
Thx Zac67,
so there is nothing like 2MB 8375 PAL for A2000?
I see only A2000 2MB 8375 NTSC there :-(