Interrupts on a PIC18

Ok, I THOUGH I was following the C18 compiler User guide to a T, but I am having trouble getting the interrupts to work right.

I am working with a PICDEM HPC, which has a 18F8722 as the main chip, I am just trying something simple to get an understanding of their interrupt system.

The HPC demo board has 8 LEDs on PortD, the code powers every other LED 1010 1010.

When I don't include the ioA.x files in my project - everything works as expected. When I reset the board, the 4 LEDs come on. But when I compile the code w/ ioA.c and ioA.h as part of the project, then nothing happens. When I reset the board, the LEDs light up.

So:

1. Is something wrong w/ my code (which does compile BTW)?
2. Am I expecting the wrong thing to happen?
3. ???

Stumped, looking for some direction. RonB

//main.c

#include #include "ioA.h" #include "ports.h" #include "RS232_IO.h"

void setup(void) { setupPorts(); RCON = 0x80; IPR1 = 0x20; INTCON = 0x80; }

void main(void) { setup(); while(1){}; }

//------------------------- // ports.c

#include #include "ports.h"

void setupPorts(void) { LATD = 0xAA; TRISD = 0; }

//------------------------- // ports.h

#ifndef PORTS_H #define PORTS_H

void setupPorts(void);

#endif

//------------------------- // ioa.c

#include #include "IOA.H" #include

#pragma code rx_interrupt=0x08 void rx_int(void) { _asm goto rx_handler _endasm } #pragma code

#pragma interrupt rx_handler void rx_handler(void) { PIR1bits.RCIF = 0; } #pragma code

//------------------------- // ioa.c

#ifndef IOA_H #define IOA_H

void rx_handler(void);

#endif

//------------------------- // ioa.h

#ifndef IOA_H #define IOA_H

void rx_handler(void);

#endif