Issue, system, RegFile: First pass at adding resets.

[firearm.git] / Issue.v

diff --git a/Issue.v b/Issue.v
index 153f25f65c85176700001e8f671e8b683bc63dd4..07c709d7ae4aa9335f21122ac12e9dc3f2f47a09 100644 (file)
--- a/Issue.v
+++ b/Issue.v
@@ -279,19 +279,27 @@ module Issue(
        assign outstall = (waiting && !inbubble && !flush) || stall;
 
        reg delayedflush = 0;
-       always @(posedge clk)
-               if (flush && outstall /* halp! I can't do it now, maybe later? */)
+       always @(posedge clk/* or negedge Nrst*/)
+               if (!Nrst)
+                       delayedflush <= 0;
+               else if (flush && outstall /* halp! I can't do it now, maybe later? */)
                        delayedflush <= 1;
                else if (!outstall /* anything has been handled this time around */)
                        delayedflush <= 0;
 
        /* Actually do the issue. */
-       always @(posedge clk)
+       always @(posedge clk or negedge Nrst)
        begin
                if (waiting)
                        $display("ISSUE: Stalling instruction %08x because %d/%d", insn, waiting_cpsr, waiting_regs);
 
-               if (!stall)
+               if (!Nrst) begin
+                       cpsr_inflight[0] <= 0;
+                       cpsr_inflight[1] <= 0;
+                       regs_inflight[0] <= 0;
+                       regs_inflight[1] <= 0;
+                       outbubble <= 1;
+               end else if (!stall)
                begin
                        cpsr_inflight[0] <= cpsr_inflight[1];   /* I'm not sure how well selects work with arrays, and that seems like a dumb thing to get anusulated by. */
                        cpsr_inflight[1] <= (waiting || inbubble || !condition_met) ? 0 : def_cpsr;