Keyboard handler

[ChimpFace9000]

Does anyone know of any tutorials on how to make a keyboard handler for a game in assembly? All it has to do is set the appropriate byte in a 256 byte array to 1 when its pressed and 0 when its not pressed.

[ChimpFace9000]

Ok, i found a tutorial on how to write a handler in c, so i tried to follow it and do it in asm. I got a problem though. When i press a key, it sets the appropriate byte in the array to 1, but when i let go, it doesnt set it back to 0. Heres the code...

new9	proc
	in	al, 60h
	mov	bl, al
	xor	bh, bh
	mov	al, 20h
	out	20h, al
	mov	al, bl
	and	al, 80h
	jz	short keyoff
	sub	bl, 80h
	mov	_keys[bx], 1h
	jmp	short endkey
keyoff:	mov	_keys[bx], 0h
endkey:	iret
new9	endp

_keys is of course the 128 byte array. Anything would be helpful.

[Jimbob42]

I think you have "and al,80" when you mean "test al,80" - you are deleting the keycode