Question regarding A1200 IDE bus

[Piru]

I read somehwere (don't remember where) that the A1200 was pushed into mass production with a few manageable bugs still in the system, the most major one being a lot of CPU taxation on the internal IDE bus.

Non-DMA ide is like this, no way to get over it. This is not a bug, but a feature.

I was wondering if anyone knows if this issue was ever resolved

No it was never fixed.

With A600/A1200/A4000 IDE, all data goes thru 16-bit register. CPU need to push/pull each word one at a time. This is slow and CPU demanding.

[Piru]

What about UDMA capable IDE drives attached to an accelerator card's SCSI adaptor via a bridge?

Works fine. I have two SCSI2 AEC-7720U SCSIDE modules in my A1200 connected to BlizzPPC SCSI.

Does that still work in DMA mode?

Yes, of course.

If so, where can I get the cabling and bridge?

ACARD SCSIDE. At least KDH is selling them.

No special cables are required, normal SCSI cables will do.

This is no longer A1200 IDE bus, however. So it's abit OT.