X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fpc_communication.vhd;h=3251284a4ca13c926e7bbed69d2220e0d00ccb3c;hb=refs%2Fheads%2Ftx_test;hp=4c3a8b9af7ee1025a15595dc083bea5a6eb0a74b;hpb=59c46d104154c881734b5dcdae684661dd56e6bd;p=hwmod.git

diff --git a/src/pc_communication.vhd b/src/pc_communication.vhd
index 4c3a8b9..3251284 100644
--- a/src/pc_communication.vhd
+++ b/src/pc_communication.vhd
@@ -35,6 +35,8 @@ 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 new_i, new_i_next : std_logic;
 
 	signal char, char_next : hbyte;
 	signal char_en : std_logic;
@@ -43,6 +45,13 @@ architecture beh of pc_communication is
 
 begin
 
+
+	d_zeile <= zeile;
+	d_spalte <= spalte;
+	d_get <= get;
+	char_next <= d_char;
+	tx_new <= new_i;
+
 	sync: process (sys_clk, sys_res_n)
 	begin
 		if sys_res_n = '0' then
@@ -52,21 +61,23 @@ begin
 			spalte_next <= "0000000";
 			zeile <= "0000000";
 			zeile_next <= "0000000";
-			d_get <= '0';
-			tx_new <= '0';
+			get <= '0';
+			new_i <= '0';
 			tx_data <= "00000000";
 		elsif rising_edge(sys_clk) then
 			push_history <= push_history_next;
 			spalte <= spalte_next;
 			zeile <= zeile_next;
 			state <= state_next;
+			get <= get_next;
+			new_i <= new_i_next;
 			if (char_en = '1') then
-				state <= state_next;
+				char <= char_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 +91,6 @@ 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 +114,22 @@ begin
 
 	output_pc : process (state, zeile, spalte, char)
 	begin
-		d_get <= '0';
+		get_next <= '0';
+		new_i_next <= '0';
 		spalte_next <= "0000000";
 		zeile_next <= "0000000";
-		case state is 
+		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';
+				new_i_next <= '1';
 			when DONE =>
 				null;
-				-- be there for a single cycle and then 
 		end case;
 	end process output_pc;
 
@@ -134,7 +140,7 @@ begin
 			when IDLE =>
 				if rx_new = '1' or btn_a = '1' then
 					state_next <= FETCH;
-					char <= d_char; --latch
+					
 				end if;
 			when FETCH =>
 				if (d_done = '1') then
@@ -146,7 +152,6 @@ 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;