#include "doscmd.h"

void
int08(struct sigcontext *sc)
{
	softint(0x1c);
}

void
int1c(struct sigcontext *sc)
{
}

unsigned char timer;

unsigned char
inb_timer(int port)
{
	return (--timer);
}

void
timer_init()
{
	u_long vec;
	struct itimerval itv;

	vec = insert_hardint_trampoline();
	ivec[0x08] = vec;
	register_callback(vec, int08, "int 08");

	vec = insert_softint_trampoline();
	ivec[0x1c] = vec;
	register_callback(vec, int1c, "int 1c");

	define_input_port_handler(0x42, inb_timer);

	itv.it_interval.tv_sec = 0;
	itv.it_interval.tv_usec = 54925; /* 1193182/65536 times per second */
	itv.it_value.tv_sec = 0;
	itv.it_value.tv_usec = 54925;	 /* 1193182/65536 times per second */
	setitimer(ITIMER_REAL, &itv, 0);
}