[2125] in linux-scsi channel archive
Re: Ancient 40MB Mac SCSI drive - is there hope?
daemon@ATHENA.MIT.EDU (Raymond A. Ingles)
Tue Jul 8 11:53:26 1997
Date: Tue, 8 Jul 1997 09:32:50 -0400 (EDT)
From: " Raymond A. Ingles" <inglesra@frc.com>
To: linux-scsi@vger.rutgers.edu
Cc: doctor@fruitbat.org
In-Reply-To: <199707072020.NAA02524@gremlin.fruitbat.org>
On Mon, 7 Jul 1997 doctor@fruitbat.org wrote:
> > An old MAC SE I got back in '88 lost its picture tube a while ago, but
> >it was still usable as a remote drive for a while longer. Eventually I
> >gave up on it and put it away.
> >
> > Recently I got a SCSI controller to talk to a scanner, and I was
> >interested in seeing if I could get some old data off that drive. I got
> >the hsftools to talk to Mac floppies, so that part's fine. Next, I hooked
> >up the drive to the SCSI bus and powered up everything...
> Presumably the Mac drive was on the end of the SCSI chain when attached
> to the Mac, and therefore has Termination enabled. I'd suggest that you
> turn Termination off on which ever device is *NOT* at the physical end of
> the SCSI bus. Only the last device in the chain should have Termination.
> Your chain should look like this:
>
> PC========[Mac drive]=====[scanner]=|
Well, actually, I had things set up more like...
[Mac drive]========PC card==========[scanner]
ID=0 ID=7 ID=6
...so I didn't think termination on the drive would be an issue. However,
as I think on it, I don't know if I ever disabled termination on the card
for the internal portion of the bus. I assumed that if it saw the drive
at all, the termination on the card must not be active. I'd better check
that.
> Something else to note: SCSI ID #0 and #1 are typically used as boot
> devices on the PC when booting from a SCSI interface. I'd suggest
> changing the SCSI ID of the MAC drive to 2 (or if the ncr53c8xx has a
> bios setup, disable booting).
This I will definitely try. (Once I find out how to jumper the beast...
I don't have any drive manuals for it. :-< I'll look at the card's manual
tonight.)
Thanks for the suggestions!
Sincerely,
Ray Ingles (248) 377-7735 ray.ingles@fanucrobotics.com
The above opinions are probably not those of FANUC Robotics. Yet.
