Hi,
See comments below; (I've only had a quick look at it)

At 12:17 AM 25/10/00 -0500, you wrote:
>Hello PIC's gurus
>
>Actually we are trying to configure RB0/INT pin in a 16C74B
>as an external interrupcion with no succeded.
>
>The program seems to ignore the external interruption and never run the
>service routine.
>
>Has anyone been experienced a similar situation, because we can not
>configure RB0/INT either as an output or as input.
>
>Our source code program is:
>
>ORG 000H
>GOTO MAIN
>ORG 004H
>GOTO SERVICE
>MAIN:
>      BSF STATUS, RP0
>      MOVLW 0XF1
>      MOVWF TRISB
>      MOVLW 07H
>      MOVWF ADCON1
>      BCF STATUS, RP0
>      BSF STATUS, RP0
>      BSF OPTION_REG, INTEDG
>      BCF OPTION_REG, 7
>      MOVLW b'10110000'
>      MOVWF INTCON

You forgot to go back to bank 0 here
Also, you have the timer 0 interrupt enabled

>PT1:  SLEEP
>      GOTO PT1
>
>SERVICE:
>      BSF PORTB,3
>      BCF INTCON, INTF
>      BCF INTCON, RBIF
>      RETFIE
>END
>
>Any help from you will be apreciate
>
>Regards
>
>Lenin Pineda

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