ORG 0000H
LJMP START
ORG 2000H
START:
MOV DPTR,#1A33H
MOV A,#80H
MOVX @DPTR,A
MOV A,#01H
;（MOV P2，#1AH）
MOV R0,#34H
MOV R1,#35H
MOVX @R0,A ;内部RAM:34H的数为01H
MOVX A,@DPTR ;外部RAM:1A33H的数给A
MOVX @R1,A ;A的数给外部RAM35H
MOVX A,@R0 ;外部RAM:34H的数给A
MOVX A,@R1 ;外部RAM:35H的数给A
END
楼主怎么调试的?按理说只要看到R0,R1的数据是:34H,35H就对了,而且在要确定是同一组R0~R7的寄存器下看.
|
