27 Jul
2010
27 Jul
'10
12:52 p.m.
Mike,
Sorry to bring bad news... The interface on the 8" Bernoulli drives is
proprietary and not even close to SCSI. You will need the Iomega
interface card and one of those PCjr-to-ISA adapters to make it work
with a jr. Even then, without DMA it will be problematic. Back when
Iomega started using a true SCSI interface in their 5 1/4" drives, I
called their tech support and spoke with someone who had been there a
while. He told me the 8" drives (all of them from the original full
height to the 20M 1/2-height used an interface _derived_ from the older
SASI standard used with 8" floppy drives. Even if you wrote a custom
driver, there is no way to make the 8" drives talk to a SCSI host
controller.
If you can find an interface card, I'll send you a couple of 10M
cartridges. I don't have any 20M carts. The 20M drives were backward
compatible. The 10M drives were quite popular where I worked back in the
80's and I salvaged all the carts I could find when people started
throwing them away. Now I wish I had saved a couple of spare drives!
Jim
Michael B. Brutman wrote:
Chuck Guzis wrote:
On 1 Jul 2010 at 22:45, Michael B. Brutman
wrote:
I was able to find the cable from a list member (Thanks Rick!), but I'm
still having doubts about this thing being SCSI. There is no provision
for setting the ID on the case, and there is no termination or passthru
to continue the SCSI chain. It's possible that it is terminated by the
electronics inside and that the ID is buried inside before too, but I'm
going to have to get very involved to open it up.
Can anybody confirm that the older Bernoulli boxes were SCSI? What
controllers are you using them on?
Regards,
Mike
Does anybody know of a good source for
off-the-wall SCSI cabling? I'd
like to run this from a SCSI 1 or SCSI 2 card, and I have a variety of
cabling that has Centronics or DB25 connectors. But the DB37 is
foreign to me, so I need to find a cable or an adapter for my existing
cables.
The original 5.25" PC2 cable was a DC37F on the controller end and a
50-position "Amphenol"/"Blue
Ribbon"/"Telco"/"Centronics" male at the
far end of the cable that hooked to the drive.
But I've got the ugly suspicion that going from a DB25 to a DC37 is
going to be an exercise for your crimpers and some multiconductor
round cable. It's been a long time since I've seen a DC37
Novell/Procomp SCSI cable.
--Chuck