On Wed, Jan 08, 2020 at 10:17:29AM -0800, Chuck Guzis via cctalk wrote: > Before I go delving into my pile of SCSI X3T10 documentation and interface > chip datasheets, exactly *which* flavor of SCSI are we talking about here?
Given the reference to the Amiga, almost certainly SCSI-1, i.e. 8 bit wide single-ended HVD, clocked asynchronously at low single-digit MHz. The A2091 (and thus presumably the A590) was a pretty hateful controller, but the main sources of pain were its shoddy firmware and the limited Zorro-II bus rather than the SCSI interface. Perhaps the third-party GVP controllers swapped it around so the firmware was great but the SCSI side sucked.