DJGPP Keyboard handler.

[ChimpFace9000]

Hi. I wrote a keyboard handler in c. Sometimes it works sometimes it doesnt.

It works when i do this..

#include "key.h"

int main(void)
{
	KeyboardInstall();

	while(bKeys[KEY_ESC] == false)
	{
		gfxVSync();
	}

	KeyboardRemove();
	return(0);
}

But just doesnt respond when i do this...

#include "key.h"

int main(void)
{
	KeyboardInstall();

	while(bKeys[KEY_ESC] == false)
	{
	}

	KeyboardRemove();
	return(0);
}

Heres the file key.c...

#include <dpmi.h>
#include <go32.h>
#include <pc.h>
#include "key.h"

bool	bKeys[128];

_go32_dpmi_seginfo	SegInfoKeyboardNew;
_go32_dpmi_seginfo	SegInfoKeyboardOld;

void KeyboardInstall(void)
{
	_go32_dpmi_get_protected_mode_interrupt_vector(0x09, &SegInfoKeyboardOld);

	SegInfoKeyboardNew.pm_offset	= (unsigned long)KeyboardInterrupt;
	SegInfoKeyboardNew.pm_selector	= _go32_my_cs();
	_go32_dpmi_allocate_iret_wrapper(&SegInfoKeyboardNew);
	_go32_dpmi_set_protected_mode_interrupt_vector(0x09, &SegInfoKeyboardNew);

	for(uint i = 0; i < (sizeof(bKeys) / sizeof(bool)); i++)
	{
		bKeys[i] = false;
	}
}

void KeyboardInterrupt(void)
{
	unsigned char	key;

	key = inportb(0x60);

	if(key & 0x80)	bKeys[key - 0x7f]	= false;
	else		bKeys[key]		= true;

	key = inportb(0x61);
	outportb(0x61, key | 0x80);
	outportb(0x61, key);
	outportb(0x20, 0x20);
}

void KeyboardRemove(void)
{
	_go32_dpmi_set_protected_mode_interrupt_vector(0x09, &SegInfoKeyboardOld);
}

void gfxVSync(void)
{
	while(inp(0x3da) & 0x8)
	{
	}

	while(!(inp(0x3da) & 0x8))
	{
	}
}

And heres key.h...

#ifndef _KEY_H
#define _KEY_H

#define KEY_ESC		0x01

typedef unsigned int	uint;
typedef uint		bool;
enum {false, true};

extern bool	bKeys[128];

void	KeyboardInstall(void);
void	KeyboardInterrupt(void);
void	KeyboardRemove(void);
void	gfxVSync(void);

#endif /* _KEY_H */

Ive also attached the files in a zip file. Please if you have any idea why it behaves this way, please tell me.

[ChimpFace9000]

Only 10 people saw this, so im bringing it back up.