12f683 intrc_io doesn't work

[brad2279]

I am using a 12f683 and want to run the pic on its internal osc while using GP4&5 as IO pins. If I set the fuses to any XT,LP, or HS and have the fail safe clock montior fuse set (FCMEN) the pic will detect no external osc and run on its internal osc. However when I set the fuse to intrc_io (or any internal osc configuration) the pic dosnt run at all. I have tried other 12f683 and had the same results. I also tried setting the config bits myself using #rom = .... (commented out in code) and had the same results. I saw a few posts suggesting another fix for other versions of compilers and tried that also with no luck (#rom 0x7ff = {0x3400}) I have included the code I am running. Can anyone suggest why this is happen or what I have done wrong??

Thanks

Compiler version 3.202

#include <12F683.h>
#device adc=8
#fuses WDT,INTRC_IO, NOCPD, NOPROTECT, MCLR, NOPUT, BROWNOUT, IESO, FCMEN
//#rom 0x2007 = {0x0bfc}
//#rom 0x7ff = {0x3400}
#use delay(clock=8000000)

#byte tris = 0x85 //GP tris for 12f683
#byte port = 0x05 //GP port for 12f683


void main() {

setup_oscillator(OSC_8MHZ);
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
tris=tris&0x00;

while (true){
restart_wdt();
delay_ms(200);
port=0xff;
delay_ms(200);
port=0x00;
}
}

[PCM programmer]

[brad2279]

Thanks for the response

I was only using the fail-safe clock monitor to test if the internal osc is actually working or not (this confirmed that the internal osc is working). So now I want to use the internal osc with the two clock pins as IO but when I set the fuse to INTRC_IO the device does not run at all. I have tried this with the fail safe clock diasable as follows;
#fuses WDT,INTRC_IO, NOCPD, NOPROTECT, MCLR, NOPUT, BROWNOUT, IESO, NOFCMEN
and still no luck. I have also tried with the WDT, brownout detection and the mater clear pin disabled, and still no sucsess. What I need is to be able to use the clock pins as IO so the device needs to be set to run on its internal osc but as I said befor whenever I try to configure the device this way it stops running.

I did poll the PIR1<2> and indeed it is set when I use the fail safe monitor and configure the device to run on external osc (HS,LP,etc)

[PCM programmer]

Try a simple program. See if this one will blink Pin A0.

[Guest]

that test program does work. Thanks for that, but what did I do wrong with my previous test program? I will contiue to play around with the code and see if I can pick out where I went wrong.

Thanks your responses were very fast and helpful