A method and apparatus for generating a configuration bitstream for a
programmable logic device using logic ports associated with logic cores.
Logic ports are associated with respective ones of a plurality of logic
cores, and logical connections are made between selected ones of the ports
of the logic cores. Source pins, wherein a pin represents an output
resource of a programmable element of the programmable logic device, are
associated with selected ones of the ports. A sink pin represents an input
resource of a programmable element of the programmable logic device, and
sink pins are associated with selected ones of the ports. In response to a
route programming interface call that references a source port and a sink
port, bits for the configuration bitstream are generated for routing
resources to connect selected ones of the source pins to selected ones of
the sink pins. Usage of logic ports assists in runtime reconfiguration of
logic.
