Help with tmr1 and icd debugger
While trying to monitor tmr1 interrupt using the icd it appears that the
debugger doesn't support interrupts regarding tmr1 overflow. If i use mpsim
the interrupt occurs.

Their is a short programme below which doesn't work with the icd, but works
under mpsim.
Could anyone tell me what the problem is or does icd not support tmr
interrupts!

list      p=16f877            ; list directive to define processor
 #include <p16f877.inc>        ; processor specific variable definitions


 __CONFIG _CP_OFF & _WDT_OFF & _BODEN_ON & _PWRTE_ON & _HS_OSC &
_WRT_ENABLE_ON & _LVP_OFF & _DEBUG_OFF & _CPD_OFF



pclath_temp EQU 0X20
status_temp EQU 0X21
w_temp  EQU 0X22



  ORG     0x000             ; processor reset vector
  NOP
    goto    START

  ;**********************************interrupt
vector*****************************

   ORG     0x004             ; interrupt vector location
  movwf   w_temp            ; save off current W register contents
  movf STATUS,w          ; move status register into W register
  movwf status_temp       ; save off contents of STATUS register
  movf PCLATH,w
  movwf pclath_temp
  BCF STATUS,RP0
  CLRF PCLATH

 BCF PIR1,TMR1IF


  movf pclath_temp,w
  movwf PCLATH
  movf    status_temp,w     ; retrieve copy of STATUS register
  movwf STATUS            ; restore pre-isr STATUS register contents
  swapf   w_temp,f
  swapf   w_temp,w          ; restore pre-isr W register contents
  retfie                    ; return from interrupt


;******************************end of interrupt
vector**************************

;start of main programme******************************

START


     CLRF PIR1
     CLRF INTCON
     CLRF TMR1L
     CLRF TMR1H
     BCF PIR1,TMR1IF ;INT FLAG ;TMR1 INTERRUPT FLAG
     BSF T1CON,TMR1ON   ;SWITCH ON TMR1
     BSF INTCON,PEIE
     BSF STATUS,RP0
     BSF PIE1,TMR1IE ;SET TMR1 INT ;ENABLE TMR1 INTERRUPT
     BCF STATUS,RP0
     BSF INTCON,GIE   ;ENABLE INTURRUPT
     NOP
     NOP
     NOP
     NOP
     NOP    ;JUMP TO INTERRUPT BY
     BSF PIR1,TMR1IF   ;TRIGGERING TMR1 INTERRUPT FLAG

     NOP  ;PROGRAM CONTINUES TO HERE DOESN'T GO TO
     NOP  ;INTERRUPT VECTOR
     NOP  ; HELP help help help

 END