From: Simon <simon AT magicsoftware DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: old VGA laptop mode 13h problems
Date: Tue, 22 Dec 1998 13:46:48 +0000
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello , I am writing a set of libraries for a university project
I am going away for a few days and have borowed an old 
386 laptop for coding (yes I know its ridiculously slow) but I need
to use it, anyway I have probems setting any screen mode from
the dpmi int code such as :

#define SET_MODE_FUNCTION 0x4F02
#define VIDEOBIOS 0x10

void SetVideoMode(int mode){
  __dpmi_regs registers;

    registers.x.ax=SET_MODE_FUNCTION;
    registers.x.bx=mode;
    __dpmi_int(VIDEOBIOS,&registers);
}


just returns zero from the dpmi int 
any ideas why this code(that works on several other machines 486-pentium
2) is failing on the dpmi int ???
the laptop is : 386SL (no FPU)
		4 meg
                80 meg HD 
		windows 95
thanks in advance
Simon.....