#include <16F887.h>
long long ticker;
#define XTAL_FREQUENCY  4000000
#define TIMER1_FREQUENCY (XTAL_FREQUENCY / 400)
#use fixed_io(b_outputs=PIN_B0)

#int_TIMER1
void TIMER1_isr(){
	set_timer1(-10000);
    output_toggle(PIN_B0);
}

void main(){
	output_bit( PIN_B0, 0);
	set_timer1(-10000);
	setup_timer_1 ( T1_INTERNAL | T1_DIV_BY_1 );

   enable_interrupts(INT_TIMER1);
   enable_interrupts(GLOBAL);

	while(1);
}