Interrupts

[Michaelc]

Hey
Can anyone tell my an interupt occurs when the pic is starting up?
The code is below:

#include<inttest.h>
#include<des_lcd.c>
#include<dipkey.c>

static int j;
/////////////////////////////////////////////////////////////////////////
////////Interrupt Service routine for change on port b////////////
/////////////////////////////////////////////////////////////////////////
#int_rb
rb_isr ( )
{

static int ran = 0;
static int portstatus;

portstatus = port_b;
j++;

printf("isr");
delay_ms(3000);
}



void main()
{
///////////////////////////////////////////////////////////////////
//////////////////////Declare Local Variables //////////////////////
static byte status;
int low_detected = 0;
//////////////////////////////////////////////////////////////////////
//////////////////////Disable interrupts//////////////////////////////
//////////////////////////////////////////////////////////////////////
disable_interrupts(GLOBAL);
disable_interrupts(INT_RB);
//////////////////////////////////////////////////////////////////////
//////////////////////Initialise lcd//////////////////////////////////
lcd_init();
set_tris_b(0xf0);
setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_CLOCK_DIV_2);
setup_spi(FALSE);
setup_psp(PSP_DISABLED);
setup_ccp1(CCP_OFF);
setup_ccp2(CCP_OFF);
//////////////////////////////////////////////////////////////////////
///////////////////////Setup Watchdog Counters////////////////////////
///////////////////////Reset = every 2.3secs /////////////////////////
setup_counters(RTCC_INTERNAL,WDT_2304MS);

///////////////////////////////////////////////////////////////////////
///////////////////////////Setup Timers////////////////////////////////
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
///////////////////////////////////////////////////////////////////////
//////////Setup interrupt on Port B change ////////////////////////////
///////////////////////////////////////////////////////////////////////
status = port_b; //read the status before enabling the interrupt
enable_interrupts(INT_RB);

///////////////////////////////////////////////////////////////////////
/////////////////////////Enable interrupts ////////////////////////////
///////////////////////////////////////////////////////////////////////
enable_interrupts(global);


printf("reset");
while(1)
{
i++;
restart_wdt();
}
//restart_wdt();
}

The interrupt ocurs on change on port b, but as can be seen i have the interrupts disabled. The program never reaches the printf("reset"); line!
Why is this?

[PCM programmer]

Where is your declaration for port_b ?

It should look like this, if you are using a 16F series PIC:

#byte port_b = 6

[Neutone]

It's just a guess but I would try clearing the interupt flag between these two lines.