ORG 0000H
LJMP MAIN
ORG 0030H
MAIN:
MOV P1#0FFH
JB P2.0,LOOP1
CLR P1.0
LOOP1
JB P2.0,LOOP2
CLR P1.1
LOOP2
LCALL DELAY
LJMP MAIN
DELAY:
MOV R5,#255
LOOP3
MOV R6,#255
DJNZ R6,$
DJNZ R5,LOOP3
RET
END
