From: Michael Neuling <mikey@neuling.org>
Date: Thu, 14 Jul 2022 00:32:37 +0000 (+1000)
Subject: Metavalue cleanup for register_file.vhdl
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=438a76dafd95c8efbb54c93c74dc1feb1e2e42a9;p=microwatt.git

Metavalue cleanup for register_file.vhdl

Signed-off-by: Michael Neuling <mikey@neuling.org>
---

diff --git a/register_file.vhdl b/register_file.vhdl
index 753ce80..e56202a 100644
--- a/register_file.vhdl
+++ b/register_file.vhdl
@@ -120,9 +120,21 @@ begin
                 b_addr(5) := '0';
                 c_addr(5) := '0';
             end if;
-            data_1 <= registers(to_integer(unsigned(a_addr)));
-            data_2 <= registers(to_integer(unsigned(b_addr)));
-            data_3 <= registers(to_integer(unsigned(c_addr)));
+	    if is_X(a_addr) then
+		data_1 <= (others => 'X');
+	    else
+		data_1 <= registers(to_integer(unsigned(a_addr)));
+	    end if;
+	    if is_X(b_addr) then
+		data_2 <= (others => 'X');
+	    else
+		data_2 <= registers(to_integer(unsigned(b_addr)));
+	    end if;
+	    if is_X(c_addr) then
+		data_3 <= (others => 'X');
+	    else
+		data_3 <= registers(to_integer(unsigned(c_addr)));
+	    end if;
 
             prev_write_data <= w_in.write_data;
         end if;