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From: jcmorris@mwunix.mitre.org (Joe Morris)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Expansion boxes for PS/2 series
Message-ID: <115430@linus.mitre.org>
Date: 31 Jul 90 17:09:03 GMT
References: <0093A4B6.3F34E260@KING.ENG.UMD.EDU> <13035@sun.udel.edu>
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Reply-To: jcmorris@mwunix.mitre.org (Joe Morris)
Organization: The Mitre Corporation
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In article <13035@sun.udel.edu> gharding@sun.udel.edu (George Harding) writes:
>I don't think an MCA expansion chassis is possible.  

I don't think it would be possible in the general case, since programs which
expect to be able to recover MCA setup parms wouldn't be able to get them
from CMOS, and boards which are MCA-configured wouldn't be able to get them
either if the board wasn't in a motherboard slot.

On the other hand, this wouldn't affect boards which have no MCA setup
parameters, or for which special drivers could interrogate the interface
card which supports the expansion chassis.

I've wanted this ability; my PS/2-70 has three slots and I'm already running
four slots' worth of extra stuff.  (One slot would have been used just to
provide an external connector for a Cumulus 5-1/4" disk.  I ran it out through
the cooling vents instead.)