HEAD_DBG
HEAD_DBG(head, "%08x", mask[head->id]);
HEAD_DBG(head, "%08x", mask[head->id]);
HEAD_DBG(head, "dtor");
HEAD_DBG(head, "ctor");
HEAD_DBG(head, "to %s", ior->name);
HEAD_DBG(head, "nothing to attach");
HEAD_DBG(head, "on %s", ior->name);
HEAD_DBG(head, "nothing attached");
HEAD_DBG(head, "supervisor 3.0");
HEAD_DBG(head, "supervisor 2.2");
HEAD_DBG(head, "supervisor 2.1 - %d khz", khz);
HEAD_DBG(head, "supervisor 2.0");
HEAD_DBG(head, "supervisor 1.0");