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Moon Patrol: according to the schematic, sound request latch is level triggered

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This commit is contained in:
Gyorgy Szombathelyi 2019-05-31 01:13:34 +02:00
parent 8a2196c4fc
commit 5fa85d2f5a
2 changed files with 10 additions and 11 deletions
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19
Arcade_MiST/IremM52 Hardware/MoonPatrol_MIST/src/moon_patrol_sound_board.vhd
View File

@ -111,7 +111,7 @@ architecture struct of moon_patrol_sound_board is
signal adpcm_cs : std_logic;
signal adpcm_we : std_logic;
signal adpcm_0_di : std_logic_vector(3 downto 0);
signal select_sound_7r : std_logic;
signal audio : std_logic_vector(12 downto 0);
@ -179,16 +179,15 @@ cpu_di <=
process (reset, clock_E)
begin
if reset='1' then
cpu_irq <= '0';
select_sound_7r <= '0';
cpu_irq <= '0';
elsif rising_edge(clock_E) then
if select_sound_7r = '0' and select_sound(7) = '1' then
cpu_irq <= '1';
end if;
if irqraz_we = '1' then
cpu_irq <= '0';
end if;
select_sound_7r <= select_sound(7);
select_sound_7r <= select_sound(7);
if select_sound_7r = '0' then
cpu_irq <= '1';
end if;
if irqraz_we = '1' then
cpu_irq <= '0';
end if;
end if;
end process;

2
Arcade_MiST/IremM52 Hardware/MoonPatrol_MIST/src/platform.vhd
View File

@ -157,7 +157,7 @@ begin
process (clk_sys, rst_sys) begin
if rst_sys = '1' then
sound_data_o <= X"00";
sound_data_o <= X"FF";
elsif rising_edge(clk_sys) then
if cpu_clk_en = '1' and cpu_mem_wr = '1' and snd_cs = '1' then
sound_data_o <= cpu_d_o;