writemac.a51

来自「c51中嵌入asm的程序段」· A51 代码 · 共 25 行

NAME	WRITEMAC

?PR?_writemac?WRITEMAC    SEGMENT CODE 
	PUBLIC	_writemac

	RSEG  ?PR?_writemac?WRITEMAC
_writemac:
	USING	0


WAIT1:

	MOV  	DPTR,#04000H

WAIT2:
	MOVX 	A,@DPTR
	JB   	ACC.0,WAIT2

	MOV  	DPTR,#02000H
        
        MOV     A,R7
	MOVX 	@DPTR,A

        RET
	END