SVGA Coding

The following code does nothing. I'm compiling in Borland C++.
#include <conio.h>

void SetVideoMode(int mode)
{
asm {
mov ah, 0x0
mov al, byte ptr mode
int 0x10
}
}

void InitSVGA(int mode=0x116)
{
// 0x116 = 1024x786x32k
asm {
mov ax, 0x4f02
mov bx, byte ptr mode
int 0x10
}
}

void WritePixel(int x, int y, long int color)
{
asm {
mov ah, 0x0C
mov al, byte ptr color
mov bh, 0x01
mov cx, byte ptr x
mov dx, byte ptr y
int 0x10
}
}

void main(void)
{
InitSVGA(0x116);
for(int x=0;x<1024;x++) {
for(int y=0;y<768;y++) {
WritePixel(x, y, 0x50);
}
}
getch();
SetVideoMode(0x3);
}
----END CODE----
After setting windows to run it in fullscreen, it does set the graphics mode, but does no pixel plotting, and seems to make my screen sleep. Any ideas?

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Specs:
Computer 1
------------
PII 450mHz
128 MB SDRAM
14.4 and 75.5 GB 7200 RPM Hard Drives
Riva TNT w/ 16 MB Video RAM
Windows 98/Windows 2000

Computer 2
------------
PI 200mHz
32 MB SDRAM
3 GB 2400 RPM Hard Drive
Matrox Something or Other
Debian 2.2r4, Kernel 2.4.16

The Int10 functions are the VESA video function extensions. Are you sure that your video card's BIOS supports them ?

Also, are you sure that byte ptr is the correct type of variable for parameters passed on the stack ? I thought they were referenced off of EBP : EBP+8 for the first argument.

Lastly, are really sure you want to do this kind of stuff ? It will be much more useful in the long run to learn Win32 GDI programming.

I got it working, nt doesn't have very good dos emulation at times. I already know the GDI, I'm just playing around with SVGA.

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EPoX 8KHA+
Athlon XP 1900+
512 MB DDR-SDRAM
PNY GeForce3 TI 200