Click above to get retro games delivered to your door ever month!

PTR              Change Type of Variable                             Operator

  type PTR expression

    Temporarily changes the type of the expression (which can be a label
    or variable) from its default to type.

    The type parameter can be one of the following values or names:

                    Name           Value
                    BYTE           1
                    WORD           2
                    DWORD          4
                    QWORD          8
                    TBYTE          10
                    NEAR           0FFFFh
                    FAR            0FFFEh

    BYTE, WORD, and DWORD can only be used with memory operands.  NEAR and
    FAR can only be used with labels.

       Notes:     PTR is generally used to access a variable in a way
                  differently than the way it is defined, for example, to
                  access the high-order byte of a word variable.  Also PTR
                  is used to explicitly define the type of a variable or
                  label which is a forward reference.

  -------------------------------- Example ---------------------------------

           MOV       AL, BYTE PTR WORDVAR
           CALL      FAR PTR ROUTINE