OHCI_RH_DESCRIPTOR_A
uint32 desca = _ReadReg(OHCI_RH_DESCRIPTOR_A);
_WriteReg(OHCI_RH_DESCRIPTOR_A, desca | OHCI_RH_NO_OVER_CURRENT_PROTECTION);
_WriteReg(OHCI_RH_DESCRIPTOR_A, desca);
uint32 descriptor = _ReadReg(OHCI_RH_DESCRIPTOR_A);