From 2eebbe25d8100b213077a4c70156d00854b426d2 Mon Sep 17 00:00:00 2001
From: myrfy001 <11474381+myrfy001@users.noreply.github.com>
Date: Thu, 28 Mar 2024 09:50:55 +0800
Subject: [PATCH] fix timing

---
 src/includes/EthUtils.bsv | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/includes/EthUtils.bsv b/src/includes/EthUtils.bsv
index 3d1235b..3a15c41 100644
--- a/src/includes/EthUtils.bsv
+++ b/src/includes/EthUtils.bsv
@@ -363,11 +363,17 @@ module mkSizedBramFifoToFifoOut#(
 )(FifoOut#(dType)) provisos(Bits#(dType, dSize), Add#(1, a__, dSize), FShow#(dType));
 
     FIFOF#(dType) fifo <- mkSizedBRAMFIFOF(depth);
+    // to fix timing, BRAM fifo is complex at it's output port.
+    FIFOF#(dType) outBuffer <- mkFIFOF;  
     rule doEnq;
         fifo.enq(pipe.first);
         pipe.deq;
     endrule
-    return convertFifoToFifoOut(fifo);
+    rule doDeq;
+        outBuffer.enq(fifo.first);
+        fifo.deq;
+    endrule
+    return convertFifoToFifoOut(outBuffer);
 endmodule
 
 module mkSizedFifoToFifoOut#(