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Old 11 January 2020, 18:48   #1
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Wanted: A3000 SUPER DMAC 4 390537-04 or RAMSEY 4 390541-04

Since I bought an AA3000+ board I'm hunting down all the ICs. The proper DMAC & RAMSEY is the hardest to come by.
I now have a DMAC 2 & RAMSEY 7, but that's supposedly not a stable combination.

So I'm looking for either a Super DMAC 4 390537-04 or RAMSEY 4 390541-04.
So if anybody has either of these ICs, for a reasonable price please let me know. I could even trade a RAMSEY 4 for a SUPER DMAC 2, since I have 2 now.

A (battery-leak) rotten A3000 mainboard with working RAMSEY 4 or (imagine) A4000T mainboard with DMAC 4 I will also consider.
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Old 12 January 2020, 00:50   #2
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A4000T has no DMAC. The NCR SCSI controller in it can do DMA by itself on the motherboard 68030 local bus.
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Old 12 January 2020, 09:59   #3
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The DMAC4 was only shipped with the A3000T/040 as far as I know.

Good luck with your search! The last DMAC4 I ever found was back in 2008 or so, and silly me - I sold it with that A3000 back then instead of downgrading it back to DMAC2 + Ramsey4 before it went.
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