DingusPPC: A more accurate PowerPC Mac emulator

[Arbee]

So, it's not DMA'd on the Q630, it's SCSI PIO <facepalm>

The only 68k Macs with DMA SCSI under Mac OS are the Quadra AVs. (IIfx has hardware for it but only A/UX uses it).

 

[croissantking]

I think there was, and all Apple did for the 6200/6300 was redesign the logic board such that it was built in.

Would the upgrade have actually been a 6200 board? (As opposed to a LCPDS 601 card)

A clue to this, I believe, is that the 630 and 6200 logic boards are interchangeable and will run in each other's chassis. I'm not sure if the 6300 LB would run properly in an unmodified 630 or 6200 chassis, but the later ones (6360, 6400, etc) almost certainly won't run properly without chassis mods.

The only issue with running 6360/6400/6500 etc boards in a 630 chassis is the lack of 3.3V from the PSU. A 6300 or 6320 board would drop into a 630/6200 with no problem.