always go to interrupt

i have a problem with below code.
always go to interrupt.Why;
i use pic16f88
i have pull-ups resistors to rb4-rb7

Code:

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    INTCON = %10001000          ' %10001000  enable interrupts on RB4 through RB7

    SW1 var PORTB.4
    SW2 var PORTB.5
    SW3 var PORTB.6
    SW4 var PORTB.7

    LED1 var PORTA.0
    LED2 var PORTA.1
   
    On Interrupt goto inter    ' Define interrupt handler
   
    TRISA=%11110000        'PA3-PA0=output
    TRISB=%11110000        'PB7-PB4=input, PB3-PB0=output
    PORTA=0                'Turn off all LEDs
   
Loop:
    High PORTA.0
    Pause 500
    Low PORTA.0
    Pause 500   
    goto Loop

    Disable                ' No interrupts past this point   
inter:

'*** Blinking routine ***

    High PORTA.0
    Pause 500
    Low PORTA.0
    Pause 500
    High PORTA.1
    Pause 500
    Low PORTA.1
    Pause 500
   
    INTCON.0=0      ' Clear interrupt flag
    Resume          ' Return to main program 
    Enable 
   
    End

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Section 5.2 of the 16F88 datasheet, mainly the 3rd paragraph

Hi,

Quote:

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INTCON.0=0 ' Clear interrupt flag

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You need to use INTCON = $80 to clear interrupt flags. Also the portb mismatched condition is cleared when you read it.