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Date: Wed, 21 May 1997 9:02:43 -0400
From: Dan Welch <WELCHDW@wofford.edu>
To: stesin@gu.net
CC: HARDWARE@FREEBSD.ORG, WELCHDW@wofford.edu
Message-Id: <970521090243.22a1ce87@wofford.edu>
Subject: Re: isa bus and boca multiport boards
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>> > And, IRQ 12 is used for PS/2 mouse ports built into motherboards.
>> 
>> I used the cmos setup to turn that off.  Is that reliable?
>
>	No. I've seen myself that disabling PS/2 mouse
>	in BIOS doesn't leave IRQ12 for you -- last time
>	that was on Packard Bell 486 box, with Phoenix BIOS,
>	when we tried to install second AHA-1542 in it.
>
>	Despite of disabling PS/2 in BIOS, 1542 did all kinds
>	of strange and mysterious things ("going to polling
>	mode", loosing interrupts, etc.) until we moved it
>	from IRQ12 to some other one.

Just as I feared ...  thanks for sharing your experience.