Port Fourchon Map.Printable map of Port Fourchon with keys attached, listing leases by site number and by company name to correspond with the map. Interactive Port Map.Zoom in to see specific details of seaport property in Port Fourchon. The map of the port includes a list with map layers that you can check on or off. Links to the other port maps inland shipping, oil port areas and business area, are found under this map of the port. Nautical information for sea shipping. View more port maps. Port map: inland shipping.
Port mapping in module instantiation can be done in two different ways:
- Port mapping by order
- Port mapping by name
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In this post, we would take one example to understand both types of port mapping in detail.
The above Figure shows an example for module instantiation. Figure shows module “SYNCHRO” which consists of 2 ‘D’ flip-flops and are connected in serial fashion. Module “SYNCHRO” has 2 input ports “ASYNC” and “CLOCK” and 1 output port “SYNC”.
Verilog Programming for DFF instantiated in the SYNCHRO module:
MODULE PORT MAPPING BY ORDER
Here first instance name of ‘D’ flip-flop is “DFF1” and second instance name is “DFF2”. In this module ports are connected by order. Order of ports in instantiation of DFF1 and DFF2 is same as order of ports in DFF. If the number of ports increased, then it is very difficult to do “module ports connection by order”.
MODULE PORT MAPPING BY NAME
In this module, ports are connected by Name. Order of ports in instantiation of DFF1 and DFF2 is different from order of ports in DFF. In this ‘.’ is used to represent port name followed by associated port name in small brackets i.e. “()”. Advantage of using “port connection by name” is, it is easy to port map for large number of ports in a design.
Tip: Always connect ports by name to avoid any error.