fixed timing and registers

diff --git a/src/pc_communication.vhd b/src/pc_communication.vhd
index 3490ea14690d6232f932e93c4c3a07142b60a14b..8c48088e04cc2244664ad986ebd807d109bb2163 100644 (file)
--- a/src/pc_communication.vhd
+++ b/src/pc_communication.vhd
@@ -38,6 +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 get, get_next : std_logic;
        signal new_i, new_i_next : std_logic;
        signal tx_done_i, tx_done_i_next : std_logic;

+       signal tx_data_i, tx_data_i_next : std_logic_vector (7 downto 0);

        signal d_done_i : std_logic;
        signal s_done, s_done_next : std_logic;
 
        signal d_done_i : std_logic;
        signal s_done, s_done_next : std_logic;
 


@@ -56,6 +57,7 @@ begin
        tx_new <= new_i;
        d_done_i <= d_done;
        tx_done_i_next <= tx_done;
        tx_new <= new_i;
        d_done_i <= d_done;
        tx_done_i_next <= tx_done;

+       tx_data <= tx_data_i;

 
        sync: process (sys_clk, sys_res_n)
        begin
 
        sync: process (sys_clk, sys_res_n)
        begin


@@ -66,7 +68,7 @@ begin
                        zeile <= 1;
                        get <= '0';
                        new_i <= '0';
                        zeile <= 1;
                        get <= '0';
                        new_i <= '0';

-                       tx_data <= "00000000";
+                       tx_data_i <= "00000000";

                        spalte_up <= '0';
                        tx_done_i <= '0';
                        s_done <= '0';
                        spalte_up <= '0';
                        tx_done_i <= '0';
                        s_done <= '0';


@@ -78,6 +80,7 @@ begin
                        get <= get_next;
                        new_i <= new_i_next;
                        tx_done_i <= tx_done_i_next;
                        get <= get_next;
                        new_i <= new_i_next;
                        tx_done_i <= tx_done_i_next;

+                       tx_data_i <= tx_data_i_next;

                        spalte_up <= spalte_up_next;
                        s_done <= s_done_next;
                        if (char_en = '1') then
                        spalte_up <= spalte_up_next;
                        s_done <= s_done_next;
                        if (char_en = '1') then


@@ -110,6 +113,7 @@ begin
                s_done_next <= '0';
                spalte_next <= spalte;
                zeile_next <= zeile;
                s_done_next <= '0';
                spalte_next <= spalte;
                zeile_next <= zeile;

+               tx_data_i_next <= tx_data_i;

 
                if spalte_up = '1' then
                        if spalte = hspalte_max  then
 
                if spalte_up = '1' then
                        if spalte = hspalte_max  then


@@ -135,7 +139,7 @@ begin
                                char_en <= '1';
                        when FORWARD =>
                                char_en <= '0';
                                char_en <= '1';
                        when FORWARD =>
                                char_en <= '0';

-                               tx_data <= char;
+                               tx_data_i_next <= char;

                                new_i_next <= '1';
                                if (tx_done_i = '1') then
                                        spalte_up_next <= '1';
                                new_i_next <= '1';
                                if (tx_done_i = '1') then
                                        spalte_up_next <= '1';