?? led.asm
字號:
BSF STATUS,5
MOVLW 01H
MOVWF TRISB
BCF STATUS,5
LOOP BTFSS PORTB,0
GOTO LOOP
PAGESEL DELAY10MS
CALL DELAY10MS
PAGESEL LOOP
BTFSS PORTB,0
GOTO LOOP
PPA BTFSC PORTB,0
GOTO PPA
PAGESEL DELAY10MS
CALL DELAY10MS
PAGESEL PPA
BTFSC PORTB,0
GOT0 PPA
DELAY10MS MOVLW 0DH
MOVWF 20H
LOOP1 MOVLW 0FFH
MOVWF 21H
LOOP2 DECFSZ 21H
GOTO LOOP2
DECFSZ 20H
GOTO LOOP1
RETURN
END
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