Mail Archives: djgpp/2000/12/02/19:11:49
From: | "sauls" <sauls AT nospam DOT subdimension DOT com>
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | Real Mode Callbacks: The Return
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Date: | Sat, 2 Dec 2000 02:35:35 -0600
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Organization: | ExecPC Internet - Milwaukee, WI
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Reply-To: | djgpp AT delorie DOT com
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I thought I got a grasp of what was going on with
__djgpp_allocate_real_mode_callback, so I tried to write some code...
int main()
{
__dpmi_raddr MouseCallback;
if(__dpmi_allocate_real_mode_callback(&MouseFunction, &r, &MouseCallback))
abort();
int Mask = 0x7F;
r.x.es = MouseCallback.segment;
r.x.dx = MouseCallback.offset16;
r.x.ax = 0x000c;
r.x.cx = Mask;
__dpmi_int(0x33, &r);
}
with a suitible loop at the end to waste time. But when I tried to run it,
it crashed and burned, with either a GPF, or a complete hard freeze. I seem
to not be understanding the concept. If someone could show me where I went
wrong.... please?
Oh yes, and I already realize that what I am doing could be done with the
__go32_allocare_real_mode_callback function. This is more for the
educational experience, than anything else.
Thanks.
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