Need help with DSSI/SCSI and an ext CD-ROM

From: Jochen Kunz <jkunz_at_unixag-kl.fh-kl.de>
Date: Mon Oct 28 03:09:53 2002

On 2002.10.27 15:50 Curt Vendel wrote:

> I need some help with a Vax 4000-200. I picked up an RRD43
> CD-ROM drive and installed it into an external SCSI-1 enclosure. On
> the 4000-200 on the far left side of the QBus slots is a slot with 2
> connectors, one appears to be a standard SCSI-1 connector
BA440???
This connector goes to the tape dirve bay above the PSU. There is no
SCSI adapter on the MV4k200 / KA660 CPU bord, only DSSI. You would need
a KZQSA (non MSCP QBus to SCSI adapter, intended for use as tape
controller only) or the like. Then you can connect the SCSI bus of the
adapter to that connector and mount a SCSI tape in the tape dirve bay.
There are two connectors on the backplane in the tapge drive bay, one is
DSSI, one is SCSI.

> and the other is an inverse SCSI-2 connector (labels Bus 0) with a
> terminator on it that lights up on power up.
That is the DSSI bus.
-- 
tsch??,
         Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
Received on Mon Oct 28 2002 - 03:09:53 GMT

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