AT

 The AT attribute specifies that VSI Pascal allocates no  storage
 for  the object (storage has already been allocated) and that it
 resides at the exact, specfied address.

 Syntax:

    AT( n )

 The exact address is specified by  the  constant  expression  n.
 Variables representing machine-dependent entities are frequently
 given the AT attribute.

 See the "HP Pascal Language Reference Manual" for  the  complete
 description of using the AT attribute.