INTR_CLOCK
if (intr_flags & INTR_CLOCK) {
if (rec->intr_flags & INTR_CLOCK)
if (rec->intr_flags & INTR_CLOCK) {
INTR_EXCL | INTR_CLOCK |
INTR_EXCL | INTR_CLOCK |
INTR_EXCL | INTR_CLOCK |