Adding an XT-Controller Card to a XENIX System.
pri=-10 Stuart Lynne
sl at van-bc.UUCP
Tue Dec 27 18:46:48 AEST 1988
In article <26252 at teknowledge-vaxc.ARPA> 0rrodrig at 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 at 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 at wimsey.bc.ca {ubc-cs,uunet}!van-bc!sl Vancouver,BC,604-937-7532
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