TOP ( # IOs are ordered from left to right
   (IOPIN x(15).0 );
   (IOPIN x(14).0 );
   (IOPIN x(13).0 );
   (IOPIN x(12).0 );
   (IOPIN x(11).0 );
   (IOPIN x(10).0 );
   (IOPIN x(9).0 );
   (IOPIN x(8).0 );
   (IOPIN x(7).0 );
   (IOPIN x(6).0 );
   (IOPIN x(5).0 );
   (IOPIN x(4).0 );
   (IOPIN x(3).0 );
   (IOPIN x(2).0 );
   (IOPIN x(1).0 );
   (IOPIN x(0).0 );
   (IOPIN y(15).0 );
   (IOPIN y(14).0 );
   (IOPIN y(13).0 );
   (IOPIN y(12).0 );
   (IOPIN y(11).0 );
   (IOPIN y(10).0 );
   (IOPIN y(9).0 );
   (IOPIN y(8).0 );
   (IOPIN y(7).0 );
   (IOPIN y(6).0 );
   (IOPIN y(5).0 );
   (IOPIN y(4).0 );
   (IOPIN y(3).0 );
   (IOPIN y(2).0 );
   (IOPIN y(1).0 );
   (IOPIN y(0).0 );
   (IOPIN ck.0   );
)
BOTTOM ( # IOs are ordered from left to right
   (IOPIN r(31).0 );
   (IOPIN r(30).0 );
   (IOPIN r(29).0 );
   (IOPIN r(28).0 );
   (IOPIN r(27).0 );
   (IOPIN r(26).0 );
   (IOPIN r(25).0 );
   (IOPIN r(24).0 );
   (IOPIN r(23).0 );
   (IOPIN r(22).0 );
   (IOPIN r(21).0 );
   (IOPIN r(20).0 );
   (IOPIN r(19).0 );
   (IOPIN r(18).0 );
   (IOPIN r(17).0 );
   (IOPIN r(16).0 );
   (IOPIN r(15).0 );
   (IOPIN r(14).0 );
   (IOPIN r(13).0 );
   (IOPIN r(12).0 );
   (IOPIN r(11).0 );
   (IOPIN r(10).0 );
   (IOPIN r(9).0 );
   (IOPIN r(8).0 );
   (IOPIN r(7).0 );
   (IOPIN r(6).0 );
   (IOPIN r(5).0 );
   (IOPIN r(4).0 );
   (IOPIN r(3).0 );
   (IOPIN r(2).0 );
   (IOPIN r(1).0 );
   (IOPIN r(0).0 );
)
IGNORE ( # IOs are ignored(not placed) by IO Placer
)