PowerBook Duo 280c problems

[pgavlin]

Curious if anybody has successfully used an internal BlueSCSI with a PowerBook Duo 280c (or any 68k Duo). I haven't been able to get this to work in either of the 280c machines I've been working on restoring, though I have had success with a 2300c. I have been able to get an external BlueSCSI to work via a mini dock. Both 280c machines boot fine off of their stock internal HDDs.

I used a logic analyzer to take some captures of the bus as it comes off of the RP2040 during the boot process. Some simplistic protocol analysis shows what looks to be a few glitches on the BSY line during a long transfer, but that's the only thing that jumps out at me. I can attach these captures as VCDs if that would be helpful .

Thinking of putting together a little board that will let me attach the logic analyzer to the actual SCSI bus between the BlueSCSI and the controller in order to get a more accurate capture.

[pgavlin]

At the very least, here's a screenshot of the capture with the glitches highlighted in the lower right: