[comp.unix.xenix] Adding an XT-Controller Card to a XENIX System.

0rrodrig@teknowledge-vaxc.ARPA (Russ Rodriguez) (12/27/88)

Hello:

	I'm wondering if anyone out there has added a second hard disk
to their SCO XENIX 2.2.1 system where the second hard disk is on an
IBM PC-XT-type controller card.  I'm using such a setup now, where the
second hard disk is a PLUS-DEVELOPMENT-SYSTEM Hardcard-20.  The mkdev hd
command just hangs after I answer the prompt.  Any pointers would be
helpful. The manual says that xenix wants to have a single controller
card, but perhaps there are exceptions?

Russell Rodriguez
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sl@van-bc.UUCP (pri=-10 Stuart Lynne) (12/27/88)

In article <26252@teknowledge-vaxc.ARPA> 0rrodrig@teknowledge-vaxc.ARPA (Russ Rodriguez) writes:
>Hello:
>
>	I'm wondering if anyone out there has added a second hard disk
>to their SCO XENIX 2.2.1 system where the second hard disk is on an
>IBM PC-XT-type controller card.  I'm using such a setup now, where the
>second hard disk is a PLUS-DEVELOPMENT-SYSTEM Hardcard-20.  The mkdev hd
>command just hangs after I answer the prompt.  Any pointers would be
>helpful. The manual says that xenix wants to have a single controller
>card, but perhaps there are exceptions?

Dave Dillabough (dave@dilltk.uucp) has two AT disk controllers running under
SCO 2.3 for the 386.

I leave posting the recipe to Dave but basically you have to address the
second card to the secondary winchester address and move the interrupt to
#15. This is the hard part because althought most of the controllers seem to
allow for readdressing, they don't allow the interrupt to be moved, so a
minor hardware mod is involved.

Anyhow the last I heard he did indeed have four hard disks up and running.

The XT probably has a similiar problem with interrupts. But you should also
check with SCO to see if they support two XT controllers (they do support
two AT controllers).


-- 
Stuart.Lynne@wimsey.bc.ca {ubc-cs,uunet}!van-bc!sl     Vancouver,BC,604-937-7532

debra@alice.UUCP (Paul De Bra) (12/28/88)

In article <26252@teknowledge-vaxc.ARPA> 0rrodrig@teknowledge-vaxc.ARPA (Russ Rodriguez) writes:
>Hello:
>
>	I'm wondering if anyone out there has added a second hard disk
>to their SCO XENIX 2.2.1 system where the second hard disk is on an
>IBM PC-XT-type controller card...
>... The manual says that xenix wants to have a single controller
>card, but perhaps there are exceptions?

SCO Xenix 2.2.1, and earlier versions, don't work with more than one
controller card. (The fact that yours is an XT-type doesn't matter)

SCO added support for a second controller card in a more recent version,
I forget whether it is 2.2.3 or 2.3, but certainly more recent that 2.2.1.

Paul.
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|debra@research.att.com   | uunet!research!debra     |
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jbayer@ispi.UUCP (Jonathan Bayer) (12/29/88)

In article <8611@alice.UUCP>, debra@alice.UUCP (Paul De Bra) writes:
> In article <26252@teknowledge-vaxc.ARPA> 0rrodrig@teknowledge-vaxc.ARPA (Russ Rodriguez) writes:
> 
> SCO added support for a second controller card in a more recent version,
> I forget whether it is 2.2.3 or 2.3, but certainly more recent that 2.2.1.

SCO added support for a second controller card in 2.3.

Jonathan Bayer
Intelligent Software Products, Inc.


-- 
life used to be so simple.