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#
###################################################################
# In each of TOP()/BOTTOM()/LEFT()/RIGHT() section, there are #
# placed IOs. In the IGNORE() section, the IOs are ignored #
# by the IOPlacer. In every section, the IO syntax could be: #
# for pin: (IOPIN iopinName.0 ); #
# for pad: iopadName orientation ; #
# for space: SPACE value; #
# The capital words are keywords. orientation is not required. #
# The value is the space between the IO above and the IO below it.#
###################################################################
TOP ( # IOs are ordered from left to right
(IOPIN a(3).0 );
(IOPIN a(2).0 );
(IOPIN a(1).0 );
(IOPIN a(0).0 );
(IOPIN b(3).0 );
(IOPIN b(2).0 );
(IOPIN b(1).0 );
(IOPIN b(0).0 );
)
BOTTOM ( # IOs are ordered from left to right
(IOPIN result(3).0 );
(IOPIN result(2).0 );
(IOPIN result(1).0 );
(IOPIN result(0).0 );
)
IGNORE ( # IOs are ignored(not placed) by IO Placer
)
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