From 242cfbb4c5d93b41ee66846d5a02f902794becf5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gusso230@student.liu.se>
Date: Fri, 18 Feb 2022 10:34:35 +0100
Subject: done lab4

---
 lab4/KBD_ENC.vhd | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

diff --git a/lab4/KBD_ENC.vhd b/lab4/KBD_ENC.vhd
index 6d4a0ab..383a57e 100644
--- a/lab4/KBD_ENC.vhd
+++ b/lab4/KBD_ENC.vhd
@@ -89,6 +89,15 @@ begin
   -- *  PS2_data_shift_reg             *
   -- *                                 *
   -- ***********************************
+  process(clk) begin
+    if rising_edge(clk) then
+      if rst = '1' then
+        PS2Data_sr <= (others => '0');
+      elsif PS2Clk_op = '1' then
+        PS2Data_sr <= PS2Data & PS2Data_sr(10 downto 1);
+      end if;
+    end if;
+  end process;
 
 
 
@@ -104,7 +113,17 @@ begin
   -- *  PS2_bit_Counter                *
   -- *                                 *
   -- ***********************************
-
+  process(clk) begin
+    if rising_edge(clk) then
+      if rst='1' then
+        PS2BitCounter <= (others => '0');
+      elsif PS2BitCounter = 11 then
+        PS2BitCounter <= (others => '0');
+      elsif PS2Clk_op = '1' then
+        PS2BitCounter <= PS2BitCounter + 1;
+      end if;
+    end if;
+  end process; 
 	
 	
 
@@ -119,7 +138,30 @@ begin
   -- *  PS2_State                      *
   -- *                                 *
   -- ***********************************
-
+  process(clk) begin
+    if rising_edge(clk) then
+      if rst = '1' then
+        PS2state <= IDLE;
+      else
+        case PS2state is
+          when IDLE =>
+            if PS2BitCounter = 11 then
+              if ScanCode = x"F0" then
+                PS2State <= BREAK;
+              else
+                PS2State <= MAKE;
+              end if;
+            end if;
+          when MAKE =>
+            PS2State <= IDLE;
+          when BREAK =>
+            if PS2BitCounter = 11 then
+              PS2State <= IDLE;
+            end if;
+        end case;
+      end if;
+    end if;
+  end process;
 	
 	
 
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