TIMER_LATCH
outb(IO_TIMER1+TIMER_MODE, TIMER_SEL0 | TIMER_LATCH);
outb(IO_TIMER1+TIMER_MODE, TIMER_SEL0 | TIMER_LATCH);
outb(IO_TIMER1 + TIMER_MODE, TIMER_SEL0 | TIMER_LATCH);
outb(IO_TIMER1 + TIMER_MODE, TIMER_SEL0 | TIMER_LATCH);
rw = out_data & (TIMER_LATCH | TIMER_16BIT);
if (rw == TIMER_LATCH) {