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From: jca@pnet01.cts.com (John C. Archambeau)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: SCSI and MFM in same machine
Message-ID: <1991Jun7.053609.20623@crash.cts.com>
Date: 7 Jun 91 05:36:09 GMT
Sender: root@crash.cts.com
Organization: People-Net [pnet01], El Cajon CA
Lines: 34

talaird@pnet01.cts.com (Thomas Laird) writes:
>Hi All
>        I have just gotten a 386-20 clone that has a adaptec
>154XB SCSI controller and a 40M drive in it.  I also just happen
>have a 80M CDC MFM drive sitting on the shelf collecting DUST.
>
>Is it possible to put a MFM controller alongside the Adaptec and 
>run both.  Any recommendationare VERY welcome.
>
>So far I have replace the cripple bios to the current one IE:Award 3.03D6
>with out the drive tables to Award 3.11 with them. Still get unable to 
>talk to the MFM Drive using existing MFM controller a friend lent me.

You sure can run ST412/506 MFM with a SCSI (or at least an AHA-154x).  As for
the configuration issue, I don't know what you're running, but I do know that
the Award BIOS is on my crud list.
 
If you're running just MS-DOS, I don't know how well it will take to having an
ST412/506 controller with an AHA-154x, but I do know that the configuration is
a very doable and a common practice under Unix/Xenix.  In fact, you can have
an AHA-154x play nice with IDE, ESDI or ST412/506 (MFM or RLL), but again
this applies to Unix/Xenix.  I can't state from experience what it will do
under DOS since I've never tried it before.

     // JCA

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