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YM2149: fix stereo mixing

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This commit is contained in:
Gyorgy Szombathelyi
2020-07-10 12:57:44 +02:00
parent 4078cd3f83
commit c4cf5c58fb
1 changed files with 8 additions and 7 deletions
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15
common/Sound/ym2149/YM2149.vhd
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@@ -62,7 +62,7 @@ library ieee;
entity YM2149 is
generic (
MIXER_VOLTABLE : std_logic := '0'
MIXER_VOLTABLE : std_logic := '0'
);
port (
-- data bus
@@ -586,11 +586,12 @@ begin
vol_r <= vol_r + dac_amp;
when "00" => -- Channel A
if I_STEREO = '0' then
vol_mixer_l <= vol_l + dac_amp;
else
vol_mixer_l <= vol_l;
vol_r <= vol_r + dac_amp;
end if;
vol_mixer_r <= vol_r + dac_amp;
vol_l <= vol_l + dac_amp;
when "11" =>
vol_mixer_l <= vol_l;
vol_mixer_r <= vol_r;
when others => null;
end case;
end if;
@@ -667,12 +668,12 @@ begin
ADDR_B => vol_table_in_r,
DATA_B => vol_table_out_r
);
end generate; -- VOLTABLE
end generate; -- VOLTABLE
NO_VOLTABLE: if MIXER_VOLTABLE = '0' generate
vol_table_out_l <= (others => '0');
vol_table_out_r <= (others => '0');
end generate;
end generate;
-- mixed audio output