| Line 237... |
Line 237... |
--
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--
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-- to manage the cursor position
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-- to manage the cursor position
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signal s_cursor_x : std_logic_vector(c_H_COUNT_W - 1 downto 0);
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signal s_cursor_x : std_logic_vector(c_H_COUNT_W - 1 downto 0);
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signal s_cursor_y : std_logic_vector(c_V_COUNT_W - 1 downto 0);
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signal s_cursor_y : std_logic_vector(c_V_COUNT_W - 1 downto 0);
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function f_is_cursor_pixel(
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s_h, s_v, s_cur_x, s_cur_y : std_logic_vector)
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return boolean is
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begin
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return ((s_h = s_cur_x) or (s_v = s_cur_y));
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end f_is_cursor_pixel;
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function f_is_grid_pixel(
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s_h, s_v : std_logic_vector)
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return boolean is
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begin
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return (
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(s_h(c_GRID_BIT downto 0) = c_GRID_SIZE(c_GRID_BIT downto 0)) or
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(s_v(c_GRID_BIT downto 0) = c_GRID_SIZE(c_GRID_BIT downto 0))
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);
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end f_is_grid_pixel;
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function f_is_waveform_pixel(
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s_v, s_wav, s_wav_prev : std_logic_vector)
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return boolean is
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begin
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return (
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((s_v >= s_wav) and (s_v <= s_wav_prev)) or
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((s_v <= s_wav) and (s_v >= s_wav_prev))
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);
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end f_is_waveform_pixel;
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begin
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begin
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-- read config params from ram...
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-- read config params from ram...
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p_config : process(i_clk)
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p_config : process(i_clk)
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begin
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begin
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if rising_edge(i_clk) then
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if rising_edge(i_clk) then
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| Line 412... |
Line 439... |
o_g <= '0';
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o_g <= '0';
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o_b <= '0';
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o_b <= '0';
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else
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else
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if s_display = '1' then -- display zone
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if s_display = '1' then -- display zone
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if (
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if (
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(s_h_count = s_cursor_x) or (s_v_count = s_cursor_y) or
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f_is_cursor_pixel(s_h_count, s_v_count, s_cursor_x, s_cursor_y) or
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(s_h_count(c_GRID_BIT downto 0) = c_GRID_SIZE(c_GRID_BIT downto 0)) or
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f_is_grid_pixel(s_h_count, s_v_count)
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(s_v_count(c_GRID_BIT downto 0) = c_GRID_SIZE(c_GRID_BIT downto 0))
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) and (s_v_count(9) = '0') -- < 512
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)
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and (s_v_count(9) = '0') -- < 512
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then -- draw the cursor and/or WaveForm Grid references
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then -- draw the cursor and/or WaveForm Grid references
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o_r <= s_cursor_color(2);
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o_r <= s_cursor_color(2);
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o_g <= s_cursor_color(1);
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o_g <= s_cursor_color(1);
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o_b <= s_cursor_color(0);
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o_b <= s_cursor_color(0);
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elsif
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elsif
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((s_v_count(9 downto 0) >= s_waveform_DOB(9 downto 0)) and
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f_is_waveform_pixel(s_v_count, s_waveform_DOB(c_V_COUNT_W - 1 downto 0), v_previous_pixel)
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(s_v_count(9 downto 0) <= v_previous_pixel)
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) or
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((s_v_count(9 downto 0) <= s_waveform_DOB(9 downto 0)) and
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(s_v_count(9 downto 0) >= v_previous_pixel)
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)
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then -- draw the waveform pixel...
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then -- draw the waveform pixel...
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o_r <= s_waveform_DOB(12) or s_waveform_DOB(15); -- the "or" is only
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o_r <= s_waveform_DOB(12) or s_waveform_DOB(15); -- the "or" is only
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o_g <= s_waveform_DOB(11) or s_waveform_DOB(14); -- to not warning
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o_g <= s_waveform_DOB(11) or s_waveform_DOB(14); -- to not warning
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o_b <= s_waveform_DOB(10) or s_waveform_DOB(13); -- unused signals
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o_b <= s_waveform_DOB(10) or s_waveform_DOB(13); -- unused signals
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else -- draw the background and charmaps
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else -- draw the background and charmaps
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--if s_v_count > 512 then
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--FULL_SCREEN if (s_v_count(9) = '1') then -- >= 512
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case (s_h_count(2 downto 0)) is
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case (s_h_count(2 downto 0)) is
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when "000" => o_g <= s_charmaps_DO(7) xor s_bg_color(1);
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when "000" => o_g <= s_charmaps_DO(7) xor s_bg_color(1);
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when "001" => o_g <= s_charmaps_DO(6) xor s_bg_color(1);
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when "001" => o_g <= s_charmaps_DO(6) xor s_bg_color(1);
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when "010" => o_g <= s_charmaps_DO(5) xor s_bg_color(1);
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when "010" => o_g <= s_charmaps_DO(5) xor s_bg_color(1);
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when "011" => o_g <= s_charmaps_DO(4) xor s_bg_color(1);
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when "011" => o_g <= s_charmaps_DO(4) xor s_bg_color(1);
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| Line 459... |
Line 477... |
o_g <= '0';
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o_g <= '0';
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o_b <= '0';
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o_b <= '0';
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end if; -- if s_display
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end if; -- if s_display
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v_previous_pixel := s_waveform_DOB(9 downto 0);
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v_previous_pixel := s_waveform_DOB(9 downto 0);
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end if; -- if i_reset
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end if; -- if i_reset
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end if;
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end if; -- if rising_edge(i_clk)
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end process;
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end process;
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end rtl;
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end rtl;
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No newline at end of file
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No newline at end of file
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