HDSPM_QS_QuadWire
if (hdspm->control_register & HDSPM_QS_QuadWire)
hdspm->control_register &= ~(HDSPM_QS_DoubleWire | HDSPM_QS_QuadWire);
hdspm->control_register |= HDSPM_QS_QuadWire;
hdspm->control_register & HDSPM_QS_QuadWire?