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-rw-r--r--rtl/src/arithmetic_unit.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/rtl/src/arithmetic_unit.v b/rtl/src/arithmetic_unit.v
index 1a2282b..e987dbd 100644
--- a/rtl/src/arithmetic_unit.v
+++ b/rtl/src/arithmetic_unit.v
@@ -1,3 +1,6 @@
+// arithmetic unit:
+// Arithmetic part of the alu.
+
module arithmetic_unit (
input [31:0] a,
input [31:0] b,