From: "Valkir" <jfd50 AT videotron DOT ca>
Newsgroups: comp.os.msdos.djgpp
Subject: need help for this vesa library
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Message-ID: <ztu44.4554$ij1.55351@wagner.videotron.net>
Date: Sat, 11 Dec 1999 10:52:39 -0500
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

hello!
    I'm trying to fill my vesa info structure with a virtual call to a real
mode. When I try to just call a 13h mode with my function, it work really
well. but when I try to fall the struc, nothing work. could someone help me?
I think I tried everything expect the good solution...

MyVesaInfo is the struc with the vesa header,
and VirtualStruct is the virtual structure with wall the register.

 MyVesaInfo = (VesaInfo *)(AdrVesaInfo << 4);
 memset(MyModeInfo,0,52);            ///ResteModeInfo
 memset(VirtualStruct,0,52);            ///Reset VirtualStruc
 VirtualStruct->es = AdrVesaInfo;    ///Move the ady of my structure into es
 VirtualStruct->edi=0;                        ///move 0!
 VirtualStruct->eax = 0x4F00;          ///move interupy 4F00 for the vesa
screen


 asm("movl %1,%%edi         ///Move the virtual structure
      movb $0x10,%%bl          ///Interupt 10h for screen
      movl $0x300,%%eax      ///Interupt 300h for the virtual mode
      xorl %%ecx,%%ecx        ///cx=0
      int  $0x31"                       ///Interupt 31h for the dpmi mode
     :
     :"g"(VirtualStruct)
     :"ax","di","cx","bx","dx");

I thanks you really much cause if you answer to this I would be very happy
:o)