Function unitisopen

src/blkdev_cdimage.cpp:126–132

static uae_sem_t play_sem;

static struct cdunit *unitisopen (int unitnum)
{
	struct cdunit *cdu = &cdunits[unitnum];
	if (cdu->open)
		return cdu;
	return NULL;
}


static struct cdtoc *findtoc (struct cdunit *cdu, int *sectorp, bool data)