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From: jca@pnet01.cts.com (John C. Archambeau)
Newsgroups: comp.os.minix
Subject: Re: Dumb Questions -- IBM Minix
Message-ID: <6218@crash.cts.com>
Date: 10 Dec 90 01:16:09 GMT
Sender: root@crash.cts.com
Organization: People-Net [pnet01], El Cajon CA
Lines: 22

adrie@philica.ica.philips.nl (Adrie Koolen) writes:
>The IBM PS/2 Model 60 I worked with, had two standard RS232 channels. The first
>one used IRQ 4, the second one IRQ 3. I had an extra micro-channel card with
>one RS232 channel. It also used IRQ 3 (interrupt sharing is standard on the
>micro-channel as it uses level sensitive interrupts). The documentation stated
>that all additional IBM RS232 channels use IRQ 3.

My information on the PS/2 conventions is second hand knowledge.  It was given
to me via an article on adding COM3 and COM4 to SCO Xenix.  This may apply to
only the ISA PS/2 models, in which case it would apply to Minix since there is
no MCA support for Minix (or was that added under my nose?  :)  ).

     // JCA

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