TIMER_SEL2
TIMER_SEL2 | TIMER_16BIT | TIMER_SQWAVE);
TIMER_SEL2 | TIMER_16BIT | TIMER_SQWAVE);
(TIMER_SEL2 | TIMER_16BIT | TIMER_SWSTROBE));
(TIMER_SEL2 | TIMER_16BIT | TIMER_SWSTROBE));
(TIMER_SEL2 | TIMER_16BIT | TIMER_RATEGEN));
bus_space_write_1(iot, ioh, INT2_TIMER_CONTROL, TIMER_SEL2);
(TIMER_SEL2 | TIMER_16BIT | TIMER_SWSTROBE));
TIMER_SEL2 | TIMER_RATEGEN | TIMER_16BIT);
outb(TIMER_MODE, TIMER_SEL2|TIMER_RATEGEN|TIMER_16BIT);
TIMER_SEL2 | TIMER_16BIT | TIMER_SQWAVE);