Issues with FX pipeline

[tengjiang]

Hello FX pipeline implementers: I've discovered some issues I'm not fully understanding in your implementation:

• in IQstage::tick(): (This applies to all 3 cases), shouldn't the last line be FX[_ix].pipe_traffic += 0x10; ?

  ...
  case CDC8600::pipes::FXArith:   if((FX[_ix].pipe_traffic & 0x10) == 0)
  {
      copy(96, opsq[i], 0, out, 0);   // copy operation i to output
      opsq.erase(opsq.begin() + i);   // dequeue operation i
      FX->pipe_traffic += 0x10; // Shouldn't this be 'FX[_ix].pipe_traffic += 0x10;'  ?
  
  } 
  ...

• in FXstage::tick(): I feel that pipe_traffic should shiftpipe_traffic = pipe_traffic << 1; no matter whether txdone && rxdone

[lafis002]

Hi, the first point is fixed, with the second point i disagree, because the transfer between the stages only happens when txdone and rxdone are true, shifting the pipetraffic without shifting the actual pipe would be incorrect in my opinion.

[tengjiang]

Yep, you are right!