con_ftab:	dw con_read
		dw con_write

con_read:	stc
		ret

con_write:	push si
		push bx
		push cx
		test cx, cx
		jz .end
		mov si, dx
		mov ah, 0x0E
		xor bx, bx
.loop:		lodsb
		int 0x10
		loop .loop
		pop cx
.end:		pop bx
		pop si
		ret