Add option to disable YM2413 from game db

drhelius · Dec 27, 2024 · 2cc8716 · 2cc8716
1 parent 666ff54
commit 2cc8716
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Showing 3 changed files with 11 additions and 3 deletions.
diff --git a/src/Audio.cpp b/src/Audio.cpp
@@ -35,6 +35,7 @@ Audio::Audio(Cartridge * pCartridge)
     m_bYM2413Enabled = false;
     m_bPSGEnabled = true;
     m_bYM2413ForceDisabled = false;
+    m_bYM2413CartridgeNotSupported = false;
     m_bMute = false;
 }
 
@@ -78,6 +79,7 @@ void Audio::Reset(bool bPAL)
     m_pBuffer->clock_rate(m_bPAL ? GS_MASTER_CLOCK_PAL : GS_MASTER_CLOCK_NTSC);
     m_pYM2413->Reset(m_bPAL ? GS_MASTER_CLOCK_PAL : GS_MASTER_CLOCK_NTSC);
     m_ElapsedCycles = 0;
+    m_bYM2413CartridgeNotSupported = (m_pCartridge->GetFeatures() & GS_DB_FEATURE_DISABLE_YM2413);
 }
 
 void Audio::Mute(bool bMute)
@@ -107,7 +109,7 @@ void Audio::EndFrame(s16* pSampleBuffer, int* pSampleCount)
             if (!m_bMute)
             {
                 pSampleBuffer[i] += m_bPSGEnabled ? m_pSampleBuffer[(i >= psg_count) ? psg_count-1 : i] : 0;
-                pSampleBuffer[i] += (m_bYM2413Enabled && !m_bYM2413ForceDisabled) ? m_pYM2413Buffer[i] * 4 : 0;
+                pSampleBuffer[i] += (m_bYM2413Enabled && !m_bYM2413ForceDisabled && !m_bYM2413CartridgeNotSupported) ? m_pYM2413Buffer[i] * 4 : 0;
             }
         }
     }

diff --git a/src/Audio.h b/src/Audio.h
@@ -56,6 +56,7 @@ class Audio
     bool m_bYM2413Enabled;
     bool m_bPSGEnabled;
     bool m_bYM2413ForceDisabled;
+    bool m_bYM2413CartridgeNotSupported;
     Cartridge* m_pCartridge;
     s16* m_pYM2413Buffer;
     bool m_bMute;
@@ -81,7 +82,7 @@ inline void Audio::WriteGGStereoRegister(u8 value)
 
 inline void Audio::YM2413Write(u8 port, u8 value)
 {
-    if (m_bYM2413ForceDisabled)
+    if (m_bYM2413ForceDisabled || m_bYM2413CartridgeNotSupported)
         return;
 
     if (port == 0xF2)
@@ -106,7 +107,7 @@ inline void Audio::YM2413Write(u8 port, u8 value)
 
 inline u8 Audio::YM2413Read(u8 port)
 {
-    if (m_bYM2413ForceDisabled)
+    if (m_bYM2413ForceDisabled || m_bYM2413CartridgeNotSupported)
         return 0xFF;
     else
         return m_pYM2413->Read(port);

diff --git a/src/game_db.h b/src/game_db.h
@@ -46,6 +46,7 @@
 #define GS_DB_FEATURE_NO_BATTERY 0x04
 #define GS_DB_FEATURE_YM2413 0x08
 #define GS_DB_FEATURE_INITIAL_VINT 0x10
+#define GS_DB_FEATURE_DISABLE_YM2413 0x20
 
 struct GS_GameDBEntry
 {
@@ -404,8 +405,12 @@ const GS_GameDBEntry kGameDatabase[] =
     {0x7F667485, GS_DB_KOREAN_MD_FFF5_MAPPER, GS_DB_FEATURE_NONE, "Mega Mode Super Game 138"},
     {0xC0AC6956, GS_DB_KOREAN_MD_FFF5_MAPPER, GS_DB_FEATURE_NONE, "Pigu-Wang 7 Hap - Jaemiiss-neun Game Mo-eumjip"},
 
+    // Requires vint flag on boot
     {0xD9096263, GS_DB_DEFAULT_MAPPER, GS_DB_FEATURE_INITIAL_VINT, "Sonic's Edusoft [Proto]"},
 
+    // Does not work if YM2413 is enabled
+    {0x5359762D, GS_DB_DEFAULT_MAPPER, GS_DB_FEATURE_DISABLE_YM2413, "Wanted"},
+
     {0, 0, 0, 0}
 };