/* If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). */
UINT8 EFIAPI IoBitFieldOr8(IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 OrData)
/* If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). */
UINT8 EFIAPI IoBitFieldOr8(IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 OrData)
{
  return IoWrite8 (
           Port,
           BitFieldOr8 (IoRead8 (Port), StartBit, EndBit, OrData)
           );
}