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How to implement floating point pipelines?


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The syntax of SystemC is C++. C++ supports float, double, and long double. The basic idea of SystemC is to raise abstraction above (away-from) RTL to obtain faster running simulations. So modeling a pipelined multiplier can be quite trivial using three SystemC processes:

  1. Grab inputs and schedule to be placed into pipeline on the next clock using sc_event.
  2. Schedule an sc_event_queue for stages*clock_period and place calculation into queue.
  3. When event queue triggers, pop the queue and output the value.

If you need to deal with floating point status, that can be placed in the queue as well at the point of computation and updated when it pops out.

 

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