From 714cfa65d6f9e821e1e7c247ad81cb43a9a6da95 Mon Sep 17 00:00:00 2001
From: rs <>
Date: Wed, 1 Oct 2025 19:02:29 -0500
Subject: [PATCH] Clean up unused signals in UART

---
 libraries/rs232/rs232_uart_opt.vhd | 7 +------
 libraries/utility/fifo16.vhd       | 1 -
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/libraries/rs232/rs232_uart_opt.vhd b/libraries/rs232/rs232_uart_opt.vhd
index 0ad215a..1270912 100644
--- a/libraries/rs232/rs232_uart_opt.vhd
+++ b/libraries/rs232/rs232_uart_opt.vhd
@@ -170,8 +170,6 @@ architecture behavioral of rs232_uart_opt is
 
 	-- Tx signals
 	signal txqh_stb:       std_logic;
-	signal txqh_ack:       std_logic;
-	--signal txqh_dat:     std_logic;  -- Comes from dat_i
 	signal txqt_stb:       std_logic;
 	signal txqt_ack:       std_logic;
 	signal txqt_dat:       std_logic_vector(7 downto 0);
@@ -183,9 +181,6 @@ architecture behavioral of rs232_uart_opt is
 	signal tx_internal:    std_logic;
 
 	-- Rx signals
-	signal rxqh_stb:       std_logic;
-	signal rxqh_ack:       std_logic;
-	signal rxqh_dat:       std_logic_vector(7 downto 0);
 	signal rxqt_stb:       std_logic;
 	signal rxqt_ack:       std_logic;
 	signal rxqt_dat:       std_logic_vector(7 downto 0);
@@ -362,7 +357,7 @@ begin
 			clk_i    => clk_i,
 
 			h_stb_i  => txqh_stb,
-			h_ack_o  => txqh_ack,
+			h_ack_o  => open,
 			h_dat_i  => dat_i,
 
 			t_stb_o  => txqt_stb,
diff --git a/libraries/utility/fifo16.vhd b/libraries/utility/fifo16.vhd
index 8eea1bb..9cb0f12 100644
--- a/libraries/utility/fifo16.vhd
+++ b/libraries/utility/fifo16.vhd
@@ -35,7 +35,6 @@ architecture behavioral of fifo_16 is
 	type data_array_t is array(natural range <>) of std_logic_vector(WIDTH-1 downto 0);
 
 	signal data_array_reg:   data_array_t(15 downto 0);
-	signal data_array_shift: std_logic;
 
 	signal index_reg:        unsigned(4 downto 0);
 	signal index_up:         std_logic;
-- 
2.43.0