Comments about division hazards

pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv

@@ -118,6 +118,7 @@ module fdivsqrtfsm(
       end 
   end
 
+  // *** start logic is presently in fctl.  Make it look more like integer division start logic
   assign DivDone = (state == DONE) | (WZero & (state == BUSY));
   assign DivBusy = (state == BUSY & ~DivDone);
 

pipelined/src/hazard/hazard.sv

@@ -70,7 +70,7 @@ module hazard(
   // WFI terminates if any enabled interrupt is pending, even if global interrupts are disabled.  It could also terminate with TW trap
 //  assign StallMCause = (wfiM & (~TrapM & ~IntPendingM)); // | FDivBusyE;  
   assign StallMCause = ((wfiM) & (~TrapM & ~IntPendingM));  //*** Ross: should FDivBusyE trigger StallECause rather than StallMCause similar to DivBusyE?
-  assign StallWCause = LSUStallM | IFUStallF  | (FDivBusyE & ~TrapM & ~IntPendingM);
+  assign StallWCause = LSUStallM | IFUStallF  | (FDivBusyE & ~TrapM & ~IntPendingM); // *** FDivBusyE should look like DivBusyE in execute stage
 
   assign #1 StallF = StallFCause | StallD;
   assign #1 StallD = StallDCause | StallE;