#include<system.h>
int timer_ticks = 0;
int timer_hz;

void timer_phase(int hz)
{
      int divisor = 1193180/hz;           // Calculate the divisor
      outportb(0x43, 0x36);               // Set our command byte 0x36
      outportb(0x40, divisor&0xFF);       // Set low byte
      outportb(0x40, divisor>>8);         // Set high byte
      timer_hz = hz;
}

void timer_clock (int x, int y, int secs)
{
      int s, m, h;
      char arr[9] = {0,0,0,0,0,0,0,0,0};
      
      s = secs%60;
      m = (secs/60)%60;
      h = secs/3600;
      
      arr[0] = (h/10)%10 + '0'; if (arr[0]=='0') arr[0] = ' ';
      arr[1] = h%10 + '0';
      
      arr[3] = (m/10) + '0';
      arr[4] = m%10 + '0';
      
      arr[6] = s/10 + '0';
      arr[7] = s%10 + '0';
      
      if (secs%2 == 0) {
            arr[2] = ' ';
            arr[5] = ' ';
            }
      else {
            arr[2] = ':';
            arr[5] = ':';
            }
            
      puts_pos(x, y, arr);
}


void timer_handler(regs *r)
{
      timer_ticks++;
      
      if (timer_ticks % timer_hz) {
            timer_clock (70, 0, timer_ticks / timer_hz);
      }
}