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Demolition Derby: add Turbo Cheap Squeak sound board

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This commit is contained in:
Gyorgy Szombathelyi
2019-12-14 22:13:07 +01:00
parent ecdfbf8409
commit 0dc513c4e6
15 changed files with 201 additions and 1211 deletions
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8
common/IO/pia6821.vhd
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@@ -54,8 +54,8 @@ entity pia6821 is
addr : in std_logic_vector(1 downto 0);
data_in : in std_logic_vector(7 downto 0);
data_out : out std_logic_vector(7 downto 0);
irqa_n : out std_logic;
irqb_n : out std_logic;
irqa : out std_logic;
irqb : out std_logic;
pa_i : in std_logic_vector(7 downto 0);
pa_o : out std_logic_vector(7 downto 0);
pa_oe : out std_logic_vector(7 downto 0);
@@ -545,8 +545,8 @@ end process;
---------------------------------
pia_irq : process( irqa1, irqa2, irqb1, irqb2, porta_ctrl, portb_ctrl )
begin
irqa_n <= not (irqa1 and porta_ctrl(0)) or not (irqa2 and porta_ctrl(3));
irqb_n <= not (irqb1 and portb_ctrl(0)) or not (irqb2 and portb_ctrl(3));
irqa <= (irqa1 and porta_ctrl(0)) or (irqa2 and porta_ctrl(3));
irqb <= (irqb1 and portb_ctrl(0)) or (irqb2 and portb_ctrl(3));
end process;
end pia_arch;