From 0a819b2f3c94c65351e99c5eba67b00de1163710 Mon Sep 17 00:00:00 2001
From: Alexander Oh <oh.a@gmx.at>
Date: Tue, 25 May 2010 02:56:07 +0200
Subject: [PATCH] make get a real flip flop

---
 src/pc_communication.vhd | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/pc_communication.vhd b/src/pc_communication.vhd
index 4c3a8b9..53ca215 100644
--- a/src/pc_communication.vhd
+++ b/src/pc_communication.vhd
@@ -35,6 +35,7 @@ architecture beh of pc_communication is
 	signal spalte, spalte_next : hspalte;
 	signal zeile , zeile_next : hzeile;
 	signal spalte_up, spalte_up_next : std_logic;
+	signal get, get_next : std_logic;
 
 	signal char, char_next : hbyte;
 	signal char_en : std_logic;
@@ -43,6 +44,11 @@ architecture beh of pc_communication is
 
 begin
 
+
+	d_zeile <= zeile;
+	d_spalte <= spalte;
+	d_get <= get;
+
 	sync: process (sys_clk, sys_res_n)
 	begin
 		if sys_res_n = '0' then
@@ -52,7 +58,7 @@ begin
 			spalte_next <= "0000000";
 			zeile <= "0000000";
 			zeile_next <= "0000000";
-			d_get <= '0';
+			get <= '0';
 			tx_new <= '0';
 			tx_data <= "00000000";
 		elsif rising_edge(sys_clk) then
@@ -60,13 +66,14 @@ begin
 			spalte <= spalte_next;
 			zeile <= zeile_next;
 			state <= state_next;
+			get <= get_next;
 			if (char_en = '1') then
 				state <= state_next;
 			end if;
 		end if;
 	end process sync;
 
-	process (spalte_up)
+	process (spalte_up, spalte, zeile)
 	variable spalte_tmp, zeile_tmp : integer;
 	variable spalte2_tmp, zeile2_tmp : std_logic_vector(7 downto 0);
 	begin
@@ -80,7 +87,6 @@ begin
 				spalte_tmp := to_integer(unsigned(spalte)) + 1;
 				spalte2_tmp := std_logic_vector(to_unsigned(spalte_tmp,8));
 				spalte_next <= hspalte(spalte2_tmp(6 downto 0));
-
 				zeile_next <= zeile;
 			end if;
 			spalte_up <= '0';
@@ -104,26 +110,21 @@ begin
 
 	output_pc : process (state, zeile, spalte, char)
 	begin
-		d_get <= '0';
+		get_next <= '0';
 		spalte_next <= "0000000";
 		zeile_next <= "0000000";
 		case state is 
 			when IDLE =>
 				null;
 			when FETCH =>
-				d_zeile <= zeile_next;
-				d_spalte <= spalte_next;
-				d_get <= '1';
+				get_next <= '1';
 				char_en <= '1';
-				-- wait for timer overflow
-				-- increment counter
 			when FORWARD =>
 				char_en <= '0';
 				tx_data <= char;
 				tx_new <= '1';
 			when DONE =>
 				null;
-				-- be there for a single cycle and then 
 		end case;
 	end process output_pc;
 
@@ -146,7 +147,6 @@ begin
 					spalte_up <= '1';
 				end if;
 			when DONE =>
-				-- be there for a single cycle and then 
 				state_next <= IDLE;
 		end case;
 	end process next_state_pc;
-- 
2.25.1