Date: Sat, 9 Dec 1995 12:23:29 -0800 (GMT)
From: Orlando Andico <oandico AT gollum DOT eee DOT upd DOT edu DOT ph>
To: DJGPP Mailing List <djgpp AT sun DOT soe DOT clarkson DOT edu>
Subject: calling real-mode interrupt handler

Hello all:

I'd like some help on calling a real-mode interrupt handler; normally, 
one would do something like:

_go32_dpmi_simulate_int (vector, &regs);

However, the real-mode handler I'm calling is remarkably picky; it hates 
being called by _go32_dpmi_simulate_int () if running under windoze (but 
works fine under ms-dog).

I would like to know how I can call the handler _from real mode_. A rough 
idea would be:

> install a real-mode function (maybe an interrupt handler?)
> the real-mode function calls the (ill-behaved) handler
> my PM program then calls the real-mode program which then passes control
  to the ill-behaved handler

I'd like to know how this could be done (possibly in DJGPP v1 as I don't 
have v2 yet...) and if it's possible to install a real-mode _function_ 
(not an interrupt handler) so that call overhead is minimized.

Thanks in advance, and thanks again to all the people who've answered my 
posts!

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Orly A. Andico                   Instrumentation, Control, and Robotics Lab
oandico AT gollum DOT eee DOT upd DOT edu DOT ph        Dept of Electrical & Electronics Eng'g
                                      University of the Philippines Diliman
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