From ac783a17ae6764b3bf6c3864504d96862678aaef Mon Sep 17 00:00:00 2001
From: xingchen <1098756313@qq.com>
Date: Fri, 25 Sep 2026 11:57:19 +0800
Subject: [PATCH] feat: add rtl/majority_vote.vhd

---
 rtl/majority_vote.vhd | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 rtl/majority_vote.vhd

diff --git a/rtl/majority_vote.vhd b/rtl/majority_vote.vhd
new file mode 100644
index 0000000..42c06b9
--- /dev/null
+++ b/rtl/majority_vote.vhd
@@ -0,0 +1,20 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity majority_vote is
+  port (channels : in std_logic_vector(2 downto 0);
+        voted : out std_logic;
+        fault_mask : out std_logic_vector(2 downto 0));
+end entity;
+
+architecture rtl of majority_vote is
+  signal majority : std_logic;
+begin
+  majority <= (channels(0) and channels(1)) or
+              (channels(0) and channels(2)) or
+              (channels(1) and channels(2));
+  voted <= majority;
+  fault_mask(0) <= channels(0) xor majority;
+  fault_mask(1) <= channels(1) xor majority;
+  fault_mask(2) <= channels(2) xor majority;
+end architecture;