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 BYTE                           Byte Variable                        pp 41


 Define:  A subrange of type Integer in the range of 0..255.

 Purpose: Numeric variable that saves memory over type Integer.

 Notes:   A variable of type Byte occupies one byte in memory, whereas
          an Integer occupies two.  Whenever a Byte value  is expected
          an Integer value may be specified, and vice versa except when
          passed as parameters.  Bytes and Integers may be intermixed in
          expressions and Byte variables may be assigned Integer values.
          The only difference between Byte and Char is what the
          compiler will allow you to do with them.


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 Usage:
       VAR
          ByteVar :  Byte      ;     { Define ByteVar as type Byte        }
          IntVar  :  Integer   ;     { Define IntVar as type Integer      }
       CONST
          A       :  Byte = 65 ;     { Define constant 'A' as type Byte   }

       BEGIN
          ByteVar := 65        ;     { Assign decimal 65 to ByteVar       }
          ByteVar := Ord('A')  ;     { Assign ordianl of 'A' to ByteVar   }
          IntVar  := ByteVar   ;     { Integer := Byte is always possible }
          ByteVar := IntVar    ;     { Byte := Integer is value dependent }
          {$R+}                      { Set range checking on              }
          IntVar  := 1000      ;     { Too big for byte value             }
          ByteVar := IntVar    ;     { Run time Error 91                  }
          {$R-}                      { Set range checking off             }
          IntVar  := 1000      ;     { Too big for byte value             }
          ByteVar := IntVar    ;     { No error is detected               }
       END.