TOP ( # IOs are ordered from left to right
   (IOPIN p(7).0 );
   (IOPIN p(6).0 );
   (IOPIN p(5).0 );
   (IOPIN p(4).0 );
   (IOPIN p(3).0 );
   (IOPIN p(2).0 );
   (IOPIN p(1).0 );
   (IOPIN p(0).0 );
)
BOTTOM ( # IOs are ordered from left to right
   (IOPIN u(3).0 );
   (IOPIN u(2).0 );
   (IOPIN u(1).0 );
   (IOPIN u(0).0 );
)
IGNORE ( # IOs are ignored(not placed) by IO Placer
)