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From: svincent AT zippy DOT sonoma DOT edu (Sam Vincent)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DPMI Server
Date: 3 Dec 1995 13:43:52 GMT
Organization: Information Resources and Technology
Lines: 32
Nntp-Posting-Host: zippy.sonoma.edu
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway: from newsgroup comp.os.msdos.djgpp

Ok.. I figure it's probably impossible to get it to call the real-mode
interrupt if its in real mode, and the prot mode one if its in protected
mode..  So..  if that's the case..  which would be faster...
to provide a real mode interrupt for it to use, or a protected mode
one.. which would overall provide for better performance?
I hate to have to do a mode switch just to receive a character from the
modem.  I can't believe it reflects all interrupts to protected mode
even if it happens to be in real mode at the time.. *sigh*..

Well wait..  how the hell does the system know dpmi wants it to go to prot
mode..  It should check the interrupt vectors in the first 4k of dos
memory and go wherever I told it.. shouldnt it?!?
Unless the set_real_mode_interrupt_vector isn't really altering the
true interrupt vectors... hmmmmmm..  I'm gonna try altering them
by hand.. If that doesn't work I suppose I'm up the well known
unsanitary transitory, with no means of locomotion.

-Sam



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