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From: ballard@cheddar.ucs.ubc.ca (Alan Ballard)
Newsgroups: comp.os.os2.programmer
Subject: Re: DOS driver under OS/2
Keywords: device driver
Message-ID: <1990Nov16.170403.4813@unixg.ubc.ca>
Date: 16 Nov 90 17:04:03 GMT
References: <478@epicb.com> <1990Nov15.160926.5036@cbnewsk.att.com> <10480@ubc-cs.UUCP> <1990Nov16.133628.6975@cbnewsk.att.com>
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Reply-To: ballard@cheddar.ucs.ubc.ca (Alan Ballard)
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Organization: UBC Computing Centre, Vancouver, B.C., Canada
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In article <1990Nov16.133628.6975@cbnewsk.att.com> dez@cbnewsk.att.com (daniel.e.zuccarelli) writes:
>
>How would it be possible for OS/2 to install such a driver?
 
The initial part of the device driver header for OS/2 is compatible with 
a DOS driver header.  It contains a flag bit that is 0 for DOS and 1 
for OS/2.  Presumably this is checked.  The documentation says such
drviers are initialized in real mode rather than prot mode. 



Alan Ballard                   | Internet: ballard@ucs.ubc.ca
University Computing Services  |   Bitnet: USERAB1@UBCMTSG
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