I Hate SCSI !!!

[Tenacious]

There are rules of thumb with SCSI the same as any other interface.

There can be upto 8 devices in a SCSI daisy chain, each with a unique address, 0 thru 7.  The controller is usually address 7, leaving room for 7 peripherals.  You must ensure that no two devices are jumpered to the same address, conflicted.  The address does not determine physically where in the chain a device is located.

From the controller, the chain can radiate in two directions: external devices connected from the D-sub 25 connector, and internal devices on the ribbon cable inside the machine.  There may be no external devices and only a HD internally.

Termination: only the last physical device at the two ends of the chain should/must be terminated.


Google will turn up more in-depth info about SCSI.  The rest is going to be unique to your card.

[Tenacious]

You probable need the software for your controller.  Google it.  Get the software and docs.  As was already said, HDtoolBox should be directed to look for GVPSCSI.device

Quantum drives are great and simple. Put a jumper on SCSI ID 1 (in case the controller is calling itself 0).  Also put one on TE (terminate enable), if the drive is less than about 100 Megs (an older design) it will need resistor packs for termination instead.  Finding details of your drive would be great. Google it, too.

If the HD is the only device then it is the last device and needs termination.

What specific HD (size, model)?  When you connect power only to the drive, does it spin up?

[Tenacious]

Hi Len

What are the jumpers on the drive?  There should be about 6 of them.

I've never owned a GVP HC+8, but, I think it is a SCSI interface/ram expansion Zorro II card (meant for the A2000).  The ram is probably 16 bit, not 32 bit.  The SCSI interface should also work in an A4000 (so will the ram, but it will be slower).  It seems that Jumper 4 enables Autobooting.  I think jumpers 10 thru 12 set SCSI ID of the controller itself.  If this is true, the drive and the controller can not have the same address.

There are SCSI diagnostic utilities on Aminet.   I'm not with my Amiga now, but try to find one that will "poll" the SCSI.device.  Get one that will allow you to change the device to GVPSCSI.device.