/* Прорецедура инициализации системного таймера. */
void init_timer(){
outb(MODE_PORT, (COUNTER_0 | ACCESS_LOW | ACCESS_HIGH | MODE_3 | BINARY_COUNTER));
outb(PORT_COUNTER_0, LOW_U8 (COUNTER_DIVISOR (ticks)));
outb(PORT_COUNTER_0, HIGH_U8 (COUNTER_DIVISOR (ticks)));
set_handler_irq(timer, 0);
printf("Init Timer\n");
}
void timer_init (void)
{
/* Channel 0. */
port_out_u8 (PIT_MODE_PORT,
(COUNTER_0_SELECT | ACCESS_LOW_COUNTER_U8 |
ACCESS_HIGH_COUNTER_U8 | MODE_3_SELECT | BINARY_COUNTER));
/* LSB first, then MSB. */
port_out_u8 (PIT_COUNTER_DIVISOR, LOW_U8 (COUNTER_DIVISOR (hz)));
port_out_u8 (PIT_COUNTER_DIVISOR, HIGH_U8 (COUNTER_DIVISOR (hz)));
/* Channel 2. We use this to get a good timer. Or, more correctly,
we should use it. ;) FIXME */
port_out_u8 (PIT_MODE_PORT,
(COUNTER_2_SELECT | ACCESS_LOW_COUNTER_U8 |
ACCESS_HIGH_COUNTER_U8 | MODE_3_SELECT | BINARY_COUNTER));
port_out_u8 (PIT_COUNTER_2, LOW_U8 (COUNTER_DIVISOR (1000)));
port_out_u8 (PIT_COUNTER_2, HIGH_U8 (COUNTER_DIVISOR (1000)));
}