diff options
| -rw-r--r-- | sys/alpha/alpha/clock.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/alpha/alpha/clock.c b/sys/alpha/alpha/clock.c index e320aba..ececbeb 100644 --- a/sys/alpha/alpha/clock.c +++ b/sys/alpha/alpha/clock.c @@ -496,12 +496,14 @@ sysbeep(int pitch, int period) splx(x); return (-1); /* XXX Should be EBUSY, but nobody cares anyway. */ } - pitch = TIMER_DIV(pitch); + + if (pitch) pitch = TIMER_DIV(pitch); + outb(TIMER_CNTR2, pitch); outb(TIMER_CNTR2, (pitch>>8)); if (!beeping) { /* enable counter2 output to speaker */ - outb(IO_PPI, inb(IO_PPI) | 3); + if (pitch) outb(IO_PPI, inb(IO_PPI) | 3); beeping = period; timeout(sysbeepstop, (void *)NULL, period); } |
