X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fpc_communication.vhd;h=06884f00a28e858ad72b76972c9e7b63ecd50c21;hb=4ead3cb9291b83f6446e5f4625c6afdc883a1078;hp=4bc09d4c9bd319f745f6a40bd5e9df4071099a93;hpb=7c42d302d04814bced7207f42a16a0876121c368;p=hwmod.git

diff --git a/src/pc_communication.vhd b/src/pc_communication.vhd
index 4bc09d4..06884f0 100644
--- a/src/pc_communication.vhd
+++ b/src/pc_communication.vhd
@@ -38,7 +38,7 @@ architecture beh of pc_communication is
 	signal get, get_next : std_logic;
 	signal new_i, new_i_next : std_logic;
 	signal tx_done_i, tx_done_i_next : std_logic;
-	signal d_done_i, d_done_i_next : std_logic;
+	signal d_done_i : std_logic;
 
 	signal char, char_next : hbyte;
 	signal char_en : std_logic;
@@ -54,7 +54,7 @@ begin
 	char_next <= d_char;
 	tx_new <= new_i;
 	d_done_i <= d_done;
-	tx_done_i <= tx_done;
+	tx_done_i_next <= tx_done;
 
 	sync: process (sys_clk, sys_res_n)
 	begin
@@ -67,6 +67,7 @@ begin
 			new_i <= '0';
 			tx_data <= "00000000";
 			spalte_up <= '0';
+			tx_done_i <= '0';
 		elsif rising_edge(sys_clk) then
 			push_history <= push_history_next;
 			spalte <= spalte_next;
@@ -74,6 +75,7 @@ begin
 			state <= state_next;
 			get <= get_next;
 			new_i <= new_i_next;
+			tx_done_i <= tx_done_i_next;
 			spalte_up <= spalte_up_next;
 			if (char_en = '1') then
 				char <= char_next;
@@ -112,7 +114,7 @@ begin
 		end if;
 	end process async_push_history;
 
-	output_pc : process (state, zeile, spalte, char)
+	output_pc : process (state, zeile, spalte, char, tx_done_i)
 	begin
 		get_next <= '0';
 		new_i_next <= '0';
@@ -127,7 +129,7 @@ begin
 				char_en <= '0';
 				tx_data <= char;
 				new_i_next <= '1';
-				if (tx_done = '1') then
+				if (tx_done_i = '1') then
 					spalte_up_next <= '1';
 				end if;
 			when DONE =>
@@ -135,7 +137,7 @@ begin
 		end case;
 	end process output_pc;
 
-	next_state_pc : process (rx_new, btn_a, d_done, tx_done)
+	next_state_pc : process (rx_new, btn_a, d_done, tx_done_i)
 	begin
 		case state is
 			when IDLE =>
@@ -148,7 +150,7 @@ begin
 					state_next <= FORWARD;
 				end if;
 			when FORWARD =>
-				if (tx_done = '1') then
+				if (tx_done_i = '1') then
 					state_next <= FETCH;
 				end if;
 			when DONE =>