Mail Archives: djgpp/1992/10/30/06:22:16
I'm working on an IBM AT compatible , 80386 ,8MB extended memory.
I need to drive a custom frame grabber.
I wrote an interrupt routine , to drive the board acquisition , and I want
to set an interrupt vector to the address of the new interrupt routine.
Using Borland TC function SETVECT() and GETVECT() everithing works
properly.
Now I've installed GNU GCC . What I've done is :
Declared two union REGS r,s;
a void *oldhandler;
setted r.h.al to the interrupt number ( 0x0F )
r.h.ah to 0x35 ;
then I call intdos(&r,&s) ;
And i expected to find the address of the int. func. I want to change into
s.x.bx ;
But when I run GO32 it says :
exception 33 at eip=400022 ;
Why? Am I not allowed to get and set any interrupt ?
Does anybody can help me ?
Thank to everybody !
Paolo Questa LIRA-Lab , DIST , University of Genova , Italy.
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