MIDI_BUFSZ
unsigned char buf[MIDI_BUFSZ];
abuf_init(&ep->obuf, MIDI_BUFSZ);
if (iep->tickets >= MIDI_BUFSZ / 4)
maxavail = MIDI_BUFSZ;
unsigned char data[MIDI_BUFSZ];
n = mio_read(p->mio.hdl, data, MIDI_BUFSZ);
unsigned char midibuf[MIDI_BUFSZ];
count = MIDI_BUFSZ;