What are correct HS SCSI settings, etc. for a Bernoulli drive?
My system is as follows: ROM 1 Apple //gs 4MB AE RAM card 8MHz ZIP GS Apple High-Speed SCSI card 90MB Bernoulli hard drive System 6.0.1 Three things I can think of to check: One possibility is DMA compatibility. If your memory card is not DMA compatible, then switch 1 on the Apple HS SCSI card should be open (up). Another possibility I guess is a SCSI ID conflict. The Apple HS SCSI card’s ID at the factory is set to 7. Here are the Apple HS SCSI card switch combinations: note1: Switch 1 controls DMA; open (up) turns DMA off note2: Switches 2-4 control SCSI card ID note3: ‘U’ means open (up), ‘D’ means closed (down), ‘z’ means Set for correct DMA (see note1) SWITCH: 1234 1234 1234 1234 1234 1234 1234 1234 SETTING: zUUU zUUD zUDU zUDD zDUU zDUD zDDU zDDD CARD ID: 0 1 2 3 4 5 6 7 Third, the scsi chain needs termination power to work properly. This is different from termination. Both are required for a properly functioning scsi chain. It is possible that neither the Bernoulli drive nor the
