<dec f='src/src/sys/dev/midi_if.h' l='109' type='int midi_unit_count()'/>
<def f='src/src/sys/dev/midi.c' l='330' ll='338' type='int midi_unit_count()'/>
<use f='src/src/sys/dev/sequencer.c' l='325' u='c' c='sequenceropen'/>
