16f84a running interrupt PICBASIC code

[savnik]

You post your code in PDF format, and the only way anyone can test it is to retype it all over, no thanks.

I post the code from PDF.

    '16f84a

    Symbol OUT_PIN = PORTB.0            ' Output to solenoid RB0
    Symbol LED = PORTB.1                ' Control button to RB1
    Symbol CNTL_BUTTON = PORTB.7        ' Control button to RB7
    
    spacing var byte
    temp var byte
    
    TRISA = $FF
    TRISB = $FC                         ' RB0 and RB1 outputs, others input
    spacing = 15
    LED = 0
    temp = 1
    
    gosub wait_button
    
    LED = 1
    pause 2000                          ' Wait for two seconds
    if CNTL_BUTTON = 1 then spacing = 30: goto direct   ' If button is released before 2 secs
                                                        ' code goes directly into the default spacing
    temp = 0
    gosub wait_button                   ' If button is pressed more than 2 secs,
                                        ' it gets caught here and waits for release
    LED = 0
    pause 1000                          ' Wait for 100 ms
    
repeata:
    spacing = spacing + 5               ' Increase the spacing count by 2 every time
    toggle LED
    pause 1000
    toggle LED
    if spacing = 45 then spacing = 20   ' Till it reaches maximum and reset to minimum
    temp = 1
    gosub wait_button                   ' Access the push button state and repeat if short press
    pause 2000                          ' Delay for 2 seconds
    if CNTL_BUTTON = 1 then goto repeata
    LED = 1
    OUT_PIN = 0
'Calculate the value to be loaded into TMR0 for counting at RA4 connected to the encoder output
'Use a multiplier to convert the spacing in cm to number of pulses to count
'Say if the distance measuring wheel's dia is 40 cm then its circumference = 3.14*40 appr = 125 cm
'For one revolution ie 125 cm distance traveled = 500 pulse outputs of encoder
'Correspondingly 500/125 = 4 pulses/cm distance, therefore set the count as 255 - (spacing * 4)
direct:
    spacing = 255 - (spacing * 4)
    OPTION_REG = %00110000              ' TMR0 counter on falling edge of RA4
    'Cnt = 0                            ' Clear the event counter, Cnt
    ON INTERRUPT GOTO ISR               ' Interrupt service routine
    TMR0 = spacing
    OUT_PIN = 0
    INTCON = %10100000                  ' Enable TMR0 overflow interrupt
    
NXT:
    if OUT_PIN = 1 then
        pause 300
        OUT_PIN =0
    endif
    GOTO NXT                            ' Continue
    
'This is the interrupt service routine, ISR. The program jumps here whenever TMR0 overflow occurs
    DISABLE                             ' Disable interrupts
ISR:                                    ' Entry point of the ISR
    OUT_PIN = 1
    TMR0 = spacing
    INTCON = %10100000                  ' Enable TMR0 overflow interrupt
    RESUME                              ' Resume main program
    ENABLE                              ' Enable interrupts
    
wait_button:
    if CNTL_BUTTON && 1 = temp then wait_button
    return
    end