snes-apu-fpga

Hoping to implement:

interface SNES_APU is
port( -- data transfer register access
addr : IN STD_LOGIC_VECTOR (1 downto 0);
data : INOUT STD_LOGIC_VECTOR (7 downto 0);
read : IN STD_LOGIC; -- active low
write : IN STD_LOGIC; -- active low

-- this should be obvious
reset : IN STD_LOGIC; -- active low

-- some way of getting the sound output would be nice too
);
end SNES_APU;