RZ56 Help needed

From: Truthan,Larry <truthanl_at_oclc.org>
Date: Fri Dec 3 15:02:28 1999

I know nothing of the RZ56, BUT several seagate drives had jumpers for Motor
Start and Delay Motor Start.

In Seagate terminology if the Motor Start jumper was connected then the
Drive Waited for the SCSI "Start Unit" command to start the drive. IF the
Motor Start Jumper was NOT CONNECTED the drive fell through to a delay motor
start scheme. If the Delay Motor Start jumper was MISSING,-the delay was
disabled. If the Delay Motor start jumper was installed the drive multiplyed
the SCSI ID by 10 seconds and spun up the spindle. So ID 2 would spin up in
20 sec. ID 3 would Spin up in 30 sec. etc. I assume ID 0 would start
immediately on power up.

I had also seen some IBM SCSI drives that had a motor start jumper termed
"start on command", otherwise they powered up immediately.

But then again those were Seagate and IBM schemes, I can't speak to DEC
RZ56..

Sincerely
Larry Truthan


-----Original Message-----
From: CLASSICCMP_at_trailing-edge.com [mailto:CLASSICCMP_at_trailing-edge.com]
Sent: Friday, December 03, 1999 3:32 PM
To: Discussion re-collecting of classic computers
Subject: RE: RZ56 Help needed


>I hope this is on topic, it can't be far off ;=)
>
>I am trying to install NetBSD on my MicroVAX 3100. I would like to
>install it on the RZ56 which is in its own expansion box. The problem,
>or so I am told, is that the drive as it is needs to be told to spin up
>and NetBSD doesn't do that.
>
>It has been suggested that there might be a jumper to tell it to spin up
>automatically. Does anyone here know if that is the case, and if so,
>where it is?

I don't know about jumpers, but if you do a SHOW DEV from the console
">>>" prompt does this spin the drive up for you? Is this good enough?

If not, I suppose you'll have to chalk this up as yet another "supported
by NetBSD but doesn't work" bug...

Tim.
Received on Fri Dec 03 1999 - 15:02:28 GMT