static uint8_t next_transaction_id(uint8_t id)
{
	return (((id + 1) & XACT_ID_MAX) | (id & (XACT_ID_MAX+1)));
}
static uint8_t next_transaction_id(uint8_t id)
{
	return (((id + 1) & XACT_ID_MAX) | (id & (XACT_ID_MAX+1)));
}