/************************************************
 * Port definitions for ATtiny, ATmega families
 ************************************************/
  template <typename out,  //
            typename dir,  //
            typename in,   //
            int      ID>   //
//***************************
  class PortImplementation : public NativePortBase {
//************************
//  DataT x = (DataT)-1;   // replaced // 0b1111'1111

    template <typename reg, DataT value, DataT mask> static inline void SetBitwise  () { if(mask == 0) return; if(value & mask) reg::Or   (value & mask);  SetBitwise  <reg,value, DataT(mask << 1)>(); } // !! RECURSION !!
    template <typename reg, DataT value, DataT mask> static inline void ClearBitwise() { if(mask == 0) return; if(value & mask) reg::And(~(value & mask)); ClearBitwise<reg,value, DataT(mask << 1)>(); } // !! RECURSION !!

  //template <              DataT value, DataT mask> static inline void SetBitwiseIn() { if(mask == 0) return; if(value & mask) in::Or    (value & mask);  SetBitwiseIn<    value, DataT(mask << 1)>(); } // !! RECURSION !!
  //template <              DataT value, DataT mask> static inline void SetBitwise  () { if(mask == 0) return; if(value & mask) out::Or   (value & mask);  SetBitwise  <    value, DataT(mask << 1)>(); } // !! RECURSION !!
  //template <              DataT value, DataT mask> static inline void ClearBitwise() { if(mask == 0) return; if(value & mask) out::And(~(value & mask)); ClearBitwise<    value, DataT(mask << 1)>(); } // !! RECURSION !!

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