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-rw-r--r--rtl/src/shift_unit.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/rtl/src/shift_unit.v b/rtl/src/shift_unit.v
index ea83e4a..7dbe4a2 100644
--- a/rtl/src/shift_unit.v
+++ b/rtl/src/shift_unit.v
@@ -1,3 +1,6 @@
+// shift unit:
+// Shift part of alu.
+
module shift_unit (
input signed [31:0] a,
input [4:0] b,