pipeline17.si

unit test(input uint32 i)
{
  uint32 cycle(0);

  algorithm {

  { // describes a pipeline that starts at this state
    __display("%d) 1 [%d]",cycle,i);
  ->
    __display("%d) 2 [%d]",cycle,i);
  ->
    __display("%d) 3 [%d]",cycle,i);
  ->
    __display("%d) 4 [%d]",cycle,i);
  ->
    __display("%d) 5 [%d]",cycle,i);
  ->
    __display("%d) 6 [%d] <=== last",cycle,i);
  }
  ++:
  __display("%d) after pipeline start",cycle); // pipeline runs in parallel
  }

  always_after {
    cycle = cycle + 1;
  }
}

unit main(output uint8 leds)
{
  uint32 cycle(0);

  test   t;

  algorithm {

    t <- (cycle);
    __display("started on cycle %d",cycle);
    while (!isdone(t)) { } // algorithm is not done until pipeline has finished
    __display("done on cycle %d",cycle);

  }

  always_after {
    cycle = cycle + 1;
  }
}

/*

started on cycle         10
        11) 1 [        10]
        12) after pipeline start
        12) 2 [        10]
        13) 3 [        10]
        14) 4 [        10]
        15) 5 [        10]
        16) 6 [        10] <=== last
done on cycle         18

*/