led.asm

基于单片机的程序设计

MOV DPTR,#7FFFH
MOV A,#90H
MOVX @DPTR,A
MOV DPTR,#7FFCH
MOVX A,@DPTR
MOV 40H,A
INC DPTR
MOV A,40H
MOVX @DPTR,A
INC DPTR
MOV A,40H
MOVX @DPTR,A