diff --git a/rocket-chip b/rocket-chip
index 356304d..4852753 160000
--- a/rocket-chip
+++ b/rocket-chip
@@ -1 +1 @@
-Subproject commit 356304dbd22075f0f50a47201950803747fe7948
+Subproject commit 4852753d43134a6121273695eadb8efe0ccb1545
diff --git a/tb/shinTest/ShinTopBareTb.v b/tb/shinTest/ShinTopBareTb.v
index dcd86d5..76c9f6a 100644
--- a/tb/shinTest/ShinTopBareTb.v
+++ b/tb/shinTest/ShinTopBareTb.v
@@ -340,10 +340,12 @@ initial begin
 	$stop;
 end
 
+//生成高倍率的时钟
 initial begin
 	forever begin #10 clk8x <= ~clk8x; end
 end
 
+//生成主时钟
 initial begin
 	forever begin #80 clock <= ~clock; end
 end