scsi controllers for xenix?

[Chip Rosenthal]

In article <4945 at infmx.UUCP> markj at infmx.UUCP (Mark Jeske) writes:
>I'm upgrading my system with a scsi drive, and am wondering if
>there are any scsi controllers that will work with the standard
>2.3.2AT release?

Since you mentioned the ``AT'' release explicitly, I take it you understand
there isn't native SCSI support with this version.  You need the ``GT''
version for that.

Two possibilities.  First, somebody over in comp.unix.i386 just posted a
message mentioning a board they heard of which drives SCSI disks but looks
like a standard disk adapter.  You might pop over there and try to find it.
However, this seems kind of silly to me.  SCSI is an interface technique.
At its core, a SCSI disk is just a winchester disk like any other, often
using plain ol' RLL encoding.  I don't see any sense in trying to use a
SCSI interface if you can't get any of the benefits, e.g. to be able to
run SCSI tapes, do overlapping seeks, etc.

The second possibility is that some of the SCSI manufacturers might be
able to provide drivers.  Taking a quick look through the SCO 3rd Party
Products Directory, I see Driverex (206-333-4590) and Future Domain
(714-259-0400) listed.  I wouldn't rule out the usuals, Adaptec and
Western Digital.  Maybe some of their technical folks can provide a
pointer.

>Also, what scsi controllers does sco UNIX support?

The January 90 configuration guide mentions only the Adaptec 154X series.
Very possibly more have been added since then.  I'm running the 1542 here,
and have been pretty happy with it.

-- 
Chip Rosenthal                            |  You aren't some icon carved out
chip at chinacat.Unicom.COM                  |  of soap, sent down here to clean
Unicom Systems Development, 512-482-8260  |  up my reputation.  -John Hiatt