Ended auction for qbus SCSI

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Mon Jul 9 00:04:15 2001

At 12:44 AM 7/9/01 -0400, Chad wrote:
>Wow, I knew they were pricey, but I didn't know they were that
>expensive! I guess I should have asked about it. If I knew it was two
>cards in one, maybe I would have bid. I would very much like to put a
>scsi card into my MicroVax 3400.
>
>You say, "two scsi controllers on one card", so would that be the same
>as dual channel?

Yes, Emulex didn't come out with a controller that could do both Disk
devices (MSCP) and tape devices (TMSCP) on the same SCSI string as far as I
can tell. Instead they took the UC07 (which will control either disk or
tape but not both) and doubled it up. This particular version is the
UC08-III which has the S-box handles, the UC08 (no suffix) just has dual 50
pin headers). They also sold a UC07 that was a dual wide card and a UC07
that was the same board as the UC08 only it was half populated.

This was different that CMD (the other most popular SCSI controller for
Qbus) with their CQD series which could, on some models, do both tape and
scsi on the same string. In my order of desirability they go
         CQD-xxx (both disk and tape on one string
         UC07/8
         SQ739 (Dilog's version of a card similar to the CMD card)
         VIK-QTD (Viking controller, a bit slower in my experience, harder to
                 configure)

There were others, Trimarchi, Standard MicroSystems, several rebadged
Vikings, and CMS.
But since DEC was pushing DSSI they really discouraged using SCSI
controllers. :-)

--Chuck
Received on Mon Jul 09 2001 - 00:04:15 BST