A functional module is one which does not internally make use of other modules (like logic gates etc.) (see this page for a detailed discussion on modules). It should be derived from the lcs::Module class. The following is a checklist of items which should not be missed while implementing a custom functional module as a derivative of the lcs::Module class. Detailed examples of building functional modules can be found on the examples page.
lcs::InputBus::drive function. Registration to be driven should be done with all the input busses.
lcs::Bus::lock function. See this topic guide for more information on locking busses. All output busses should be locked by a functional module.
propogate function as the last operation of the constructor. This ensures that the input and output bus lines are in a coherent state after module construction. This function should be called after the above two operations of registering with the input busses, and locking the output busses are performed.
lcs::InputBus::unDrive function. Un-registration needs to be done with all the input busses.
lcs::Bus::unLock function. See this topic guide for more information. All the output busses have to be unlocked by the module.
lcs::Module::propogate function. This is the function which should read the input busses and calculate the outbus bus lines states. The output bus line states should then be set using the suitable lcs::Bus::LineAccessor object. See this topic guide for more information on setting the output bus lines.
1.4.7