Re: mcga/text modes

[Realtime3d@gmx.de]

Hallo,

this should compile fine and work without problems.
Perhaps have a closer look to yours compiler settings to switch to "large
memory model".



#include <conio.h>    
#include <dos.h>      
#include <stdio.h>    
#include <stdlib.h>   

void SetMCGA();
void SetText();

void SetMCGA() 
{
  _AX = 0x0013;
  geninterrupt (0x10);
}


void SetText() 
{
  _AX = 0x0003;
  geninterrupt (0x10);
}

void main()
{
 
 	printf("Setting MCGA mode, press a key\n");
 	getch();
 	SetMCGA();
 	getch();
 	SetText();
 	printf("Back in text mode\n");
 	getch();
}


> I'm having some problems switching back to text mode after switching to
> MCGA 
> mode.  My system locks up and I have to restart my computer.  I'm
> compiling 
> this on Turbo C++ 3.1 and I don't know of any problems there might be
> with 
> it.  The program will switch to MCGA mode fine, but will not switch back
> to 
> text mode.
> 
> Thanks for the help,
> Brian
> 
> 
> //-----------MCGA test-----------------------------------
> #include <stdio.h>
> #include <conio.h>
> #include <dos.h>
> #include <stdlib.h>
> 
> #define RAND_MAX 255
> 
> void SetMCGA() {
> 	_AX = 0x0013;
> 	geninterrupt (0x10);
> }
> 
> void SetText() {
> 	_AX = 0x0003;
> 	geninterrupt (0x10);
> }
> 
> int main()
> {
> 	int row, col;
>         unsigned char color;
> 
> 	printf("Setting MCGA mode, press a key\n");
> 	getch();
> 	SetMCGA();
> 	getch();
> 	SetText();
> 	printf("Back in text mode\n");
> 	return (1);
> }
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