MAX_PINS
struct io_pin opins[MAX_PINS], opins_d[MAX_PINS];
struct io_pin ipins[MAX_PINS], ipins_d[MAX_PINS];
if (add && nopins < MAX_PINS) {
if (nopins_d < MAX_PINS) {
if (add && nipins < MAX_PINS) {
if (nipins_d < MAX_PINS) {