EEPW论坛

ORG 0000H
AJMP MAIN
ORG 0030H
MAIN:
MOV P2,#0
LOOP:CPL P0.0
LCALL DELAY
SJMP LOOP
DELAY:MOV R0,#255
D1:MOV R1,#255

DJNZ R1,$
DJNZ R0,D1
RET
END