X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/6595c4c85a94d1cfaaec707cf341a4e356627d88..a221c031dbfe61723a0313763dcd124acc49c455:/Issue.v

diff --git a/Issue.v b/Issue.v
index a745656..6b25d37 100644
--- a/Issue.v
+++ b/Issue.v
@@ -2,7 +2,7 @@
 
 module Issue(
 	input clk,
-	input Nrst,
+	input Nrst,	/* XXX not used yet */
 	
 	input stall,	/* pipeline control */
 	input flush,
@@ -264,6 +264,14 @@ module Issue(
 	reg waiting_regs;
 	wire waiting = waiting_cpsr | waiting_regs;
 	
+	initial
+	begin
+		cpsr_inflight[0] = 0;
+		cpsr_inflight[1] = 0;
+		regs_inflight[0] = 0;
+		regs_inflight[1] = 0;
+	end
+		
 	always @(*)
 	begin
 		waiting_cpsr = use_cpsr & (cpsr_inflight[0] | cpsr_inflight[1]);
@@ -271,19 +279,16 @@ module Issue(
 	end
 	
 	/* Actually do the issue. */
-	always @(*)
-		outstall = waiting;
-	
 	always @(posedge clk)
 	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) ? 0 : def_cpsr;
+		cpsr_inflight[1] <= ((waiting | inbubble) && condition_met) ? 0 : def_cpsr;
 		regs_inflight[0] <= regs_inflight[1];
-		regs_inflight[1] <= (waiting | inbubble) ? 0 : def_regs;
+		regs_inflight[1] <= ((waiting | inbubble) && condition_met) ? 0 : def_regs;
 
 		outbubble <= inbubble | waiting | !condition_met;
 		outpc <= inpc;
 		outinsn <= insn;
+		outstall <= waiting && !inbubble;
 	end
-	
 endmodule