A4000D & A3000D with Deneb

[Matt_H]

Could be something to do with the multiple-DMA-devices bug discovered in Buster 11. (Were you aware of this?) I think A3000 SCSI counts as a conflicting device. What else is in the A4000?

A software conflict is also possible. Try narrowing things down. Boot without a startup-sequence and load Workbench manually after running/not running SetPatch. And what's in your WBStartup?

[Matt_H]

Nope. A3000 SCSI is not a Zorro III DMA master. After all the A3000 launched with Buster 7 which was not DMA capable.

That's what I originally believed, but I recall reading lots of other posts saying that A3000 SCSI was DMA capable (is it DMA over a non-Zorro bus? Maybe that's where the confusion comes from).


@ Marcb

Have you updated the Deneb's firmware?

[Matt_H]

AFAIK it is Zorro II DMA. Similar to A2091.

That probably explains it.