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From: "Graham Smith" <euroinfo AT eis DOT com DOT au>
Newsgroups: comp.os.msdos.djgpp
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Subject: Re: DJGPP TSR
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Message-ID: <HqH38.4137$Ni2.30570@news-server.bigpond.net.au>
Date: Wed, 23 Jan 2002 23:11:35 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com


"Joel Saunders" <jbs30000 AT aol DOT com> wrote in message
news:cd3afb153e87e9ada0e83c1b83d88f40 DOT 62691 AT mygate DOT mailgate DOT org...
> And finally, on this:
> > >         r.x.ax = 0x3100;
> > >         r.x.dx = 4;
> > >         __dpmi_int(0x21, &r);
> > This is an absolute no-no: you can't call the DOS TSR funcion from
> > protected mode.  The DPMI spec disallows that.
> The only reason I did it, is because on:
> http://www.delorie.com/djgpp/doc/dpmi/api/310c01.html
> It says
> "If the objective is only to provide resident services to real mode
> programs, the client should use the DPMI translation service Int 31H
> Function 0300H to invoke DOS's Int 21H Function 31H directly."
> Anyway, thanks for your help, I appreciate it.
>
>
But will even that really operate sensibly on a DPMI 0.9 implementation?
Don't most MS implementations provide for 0.9 only?