Hi all
I've been trying to control a triac using an interrupt on RB0 and going to an interrupt handler - been basing it on the discussion surrounding Mr E's lamp dimmer code.

Code:
'****************************************************************
'*  Name    : triac_force.pbp                                     *
'*  Author  : Alec Noble                                        *
'*  Notice  : Copyright (c) 2011 Alec Noble                     *
'*          : All Rights Reserved                               *
'*  Date    : 6/18/2011                                         *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************
@ DEVICE PIC16F819, WDT_OFF, LVP_OFF, PWRT_ON, PROTECT_OFF, BOD_OFF, INTRC_OSC_NOCLKOUT

    DEFINE OSC           8        ' Set the Xtal frequency to 8mHz
    OSCCON = %01110100
' ** Setup the interrupts   **

INTCON.7 = 1                    'GIE - enable global interrupts
INTCON.4 = 1                    'Enable RB0 interrupt

                               

on interrupt goto AC_detect

      trisa   = %11111111         'Port A all inputs
      trisb   = %00000001         'Port B.0 input,  all others outputs
      
main:
    
    goto main
      




    '
    ' Interrupt routine called by ACLine (RB0) pin state change
    '
disable
AC_Detect:
    pauseus 100
    pulsout portb.1, 25
    INTCON.1=0 ' Clear interrrupt flag
resume
enable
My input pulse train to RB0 is clean - 8.3 ms apart as it should be. However, the output pulses are about 90 MS apart. Am I misunderstanding how to configure the interrupts, doing something else foolish or what? Any help would be appreciated...
Thanks
Alec