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From: gerry@dialogic.com (Gerry Lachac)
Newsgroups: comp.os.os2.misc
Subject: Re: MicroChannel Determination in OS/2
Message-ID: <1991Apr11.220447.25438@dialogic.com>
Date: 11 Apr 91 22:04:47 GMT
References: <6634@gssc.UUCP>
Distribution: usa
Organization: Dialogic Corporation
Lines: 37

In article <6634@gssc.UUCP> timo@gssc.UUCP (Timo Wilson) writes:
>I am currently involved in writing a small OS/2 bound application that must
>determine if it is running on a MicroChannel or ISA bus.  The application
>does have one segment that has IOPL privilages.  I can determine this under
>DOS using INT 15, Ah=0xC0, but can't use it in OS/2.  Has anyone else done
>anything like this in OS/2?
>

Good luck :-)

Seriously, I had to do this for a project I was working on and I have
three possible methods for you:

1 - Use DosDevConfig() and grab the model and sub-model bytes.  Then
    compare these to the IBM published bytes for the PS/2's.  Of
    course when they come out with a new PS/2 you have a problem.  

2 - Try using an ABIOS call.  If it works, you are on a PS/2, if not,
    an AT class machine.

3 - If you have a known piece of hardware in the machine, with a known
    POS ID, you can look at all the PS/2 slots and verify that the 
    board is in the machine.


I have personally used methods 1 and 3.  Number 2 was suggested to me
by someone, but I have never tried it.

-gerry



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