It wouldn't be hard at all to make an IDE or even SATA NuBus card... ACARD makes SCSI-IDE and SCSI-SATA chips that support more than one device. Take a blank NuBus card, throw together the easiest 53c80 SCSI card possible, hotwire it to the ACARD SCSI-IDE chip, and break it out into two IDE or four SATA ports.
I mean, most of us dont' have the gear at home to do that tomorrow, but the drivers and circuit design are already done, which makes it a lot easier to throw together than these more exotic plans are.
I mean, most of us dont' have the gear at home to do that tomorrow, but the drivers and circuit design are already done, which makes it a lot easier to throw together than these more exotic plans are.