ledio.a96

来自「intel 196nt 例程」· A96 代码 · 共 31 行

LEDIO	MODULE
$include(_SFR_INC_)

	rseg
	;; Define a few registers for our own purpose
	;; Note that these are not the same as the TMPREG0
	;; used for C programs.
Tmp0:	dsw	1
Tmp0L	equ	Tmp0:BYTE
Tmp2:	dsw	1


	cseg far
	;; 
	;; void enable(void);
	;; 
	public	enable_led
enable_led:
	stb	r0,p1_dir[0]
	ret

	;;
	;;void set_led(int val);
	;; 
	public	set_led
set_led:
	ld	Tmp0,4[sp]			       ; 4 => offset of first parameter
	stb	Tmp0L,p1_reg[0]
	ret
	END