微處理器 - Microchip PIC12F1822 - Assembly - Oscillator

OSCCON可以控制內部振盪器的頻率


main.s

    list p=12f1822, r=hex
    #include <p12f1822.inc>
    __config _CONFIG1, _FOSC_INTOSC & _WDTE_OFF & _MCLRE_OFF
    __config _CONFIG2, _LVP_OFF
 
    #define tmp1 0x20
    #define tmp2 0x21
 
    org 0x0000
    goto start
   
    org 0x0100
start:
    banksel OSCCON
    movlw b'01101010'
    movwf OSCCON

    banksel TRISA
    clrf TRISA

loop:
    banksel PORTA
    bcf PORTA, 0
    call delay
 
    banksel PORTA
    bsf PORTA, 0
    call delay
    goto loop
 
delay:
    banksel tmp1
    movlw 0xff
    movwf tmp1
    movwf tmp2
    decfsz tmp1, f
    goto $-1
    decfsz tmp2, f
    goto $-3
    return
    end

編譯

$ gpasm main.s

完成