#make_COM#

; COM file is loaded at CS:0100h
; (the value of CS is set by Operating System)
ORG 100h

	mov al,0ffh	;set Parallel Port D0-D7 high
	mov dx,0378h	;to power card reader
	out dx,al

	mov dx,0ffffh
l4:	call pause
	dec dx	
	jnz l4

l1:	mov dx,0379h
	in al,dx	;get new input
	mov new,al	
	and al,20h	;check clock bit is low
	jnz l1		;if not loop to l1
	
	mov al,new	;get last input
	and al,10h	;check data bit
	
	jz  zero

one:	mov ah,0eh
	mov al,'0'
	int 10h
	
	jmp l5
	
zero:	mov ah,0eh
	mov al,'1'
	int 10h
	
l5:	mov dx,0379h
	in al,dx
	and al,20h
	jz l5
	
	jmp l1
	


pause:	push dx
	mov dx,0100h
l3:	dec dx
	jnz l3
	pop dx
	ret

new	db 	0