PDC_CHASSIS
err = pdc_call((iodcio_t)pdc, 0, PDC_CHASSIS, PDC_CHASSIS_DISP, disp);
err = pdc_call((iodcio_t)pdc, 0, PDC_CHASSIS, PDC_CHASSIS_INFO,
(void) (*pdc)(PDC_CHASSIS, PDC_CHASSIS_DISP,