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Old 09 February 2009, 20:40   #1
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Roms for A1200?

I was wondering if I could use Amiga CD32 rom chips or Amiga 4000 rom chips in my Amiga 1200?
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Old 09 February 2009, 20:56   #2
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Not as far as i know, the a500/600/2000's are interchangeable but no others.
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Old 10 February 2009, 00:51   #3
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CD32 have the proprietary boot CD libraries on ROM. No other Amiga have it (except CDTV who have another kind of the same).

A1200 have only IDE and PCMCIA card.resource/device (no use in other Amigas).

A4000 have Zorro arbiter and no PCMCIA...
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Old 10 February 2009, 12:19   #4
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The scsi.device driver on the A4000 KS is customised for the A4000's differently mapped IDE interface.

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Old 10 February 2009, 13:55   #5
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AFAIR CD32 only has 1x16-bit ROM chip whereas A1200 and A4000 have 2x16-bit ROM chips.
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Old 10 February 2009, 16:26   #6
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A4000 ROM requires RAMSEY chip. (no RAMSEY = infinite loop)
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Old 10 February 2009, 18:41   #7
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Originally Posted by Toni Wilen View Post
A4000 ROM requires RAMSEY chip. (no RAMSEY = infinite loop)
Hmmm.. THAT is interesting to know...
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Old 11 February 2009, 16:18   #8
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It does some kind of memory test (checks if page mode can be enabled I think) and it freezes because (missing) RAMSEY mode register never changes.
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