diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index f368788ac..ce7f2a2ab 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -1122,7 +1122,7 @@ void DivEngine::initSongWithDesc(const int* description) {
       song.system[index]=(DivSystem)description[i];
       song.systemVol[index]=description[i+1];
       song.systemPan[index]=description[i+2];
-      song.systemFlags[index]=description[i+3];
+      song.systemFlagsOld[index]=description[i+3];
       index++;
       chanCount+=getChannelCount(song.system[index]);
       if (chanCount>=DIV_MAX_CHANS) break;
@@ -1345,7 +1345,7 @@ void DivEngine::changeSystem(int index, DivSystem which, bool preserveOrder) {
   }
 
   song.system[index]=which;
-  song.systemFlags[index]=0;
+  song.systemFlagsOld[index]=0;
   recalcChans();
   saveLock.unlock();
   BUSY_END;
@@ -1371,7 +1371,7 @@ bool DivEngine::addSystem(DivSystem which) {
   song.system[song.systemLen]=which;
   song.systemVol[song.systemLen]=64;
   song.systemPan[song.systemLen]=0;
-  song.systemFlags[song.systemLen++]=0;
+  song.systemFlagsOld[song.systemLen++]=0;
   recalcChans();
   saveLock.unlock();
   BUSY_END;
@@ -1415,7 +1415,7 @@ bool DivEngine::removeSystem(int index, bool preserveOrder) {
     song.system[i]=song.system[i+1];
     song.systemVol[i]=song.systemVol[i+1];
     song.systemPan[i]=song.systemPan[i+1];
-    song.systemFlags[i]=song.systemFlags[i+1];
+    song.systemFlagsOld[i]=song.systemFlagsOld[i+1];
   }
   recalcChans();
   saveLock.unlock();
@@ -1541,9 +1541,9 @@ bool DivEngine::swapSystem(int src, int dest, bool preserveOrder) {
   song.systemPan[dest]^=song.systemPan[src];
   song.systemPan[src]^=song.systemPan[dest];
 
-  song.systemFlags[src]^=song.systemFlags[dest];
-  song.systemFlags[dest]^=song.systemFlags[src];
-  song.systemFlags[src]^=song.systemFlags[dest];
+  song.systemFlagsOld[src]^=song.systemFlagsOld[dest];
+  song.systemFlagsOld[dest]^=song.systemFlagsOld[src];
+  song.systemFlagsOld[src]^=song.systemFlagsOld[dest];
 
   recalcChans();
   saveLock.unlock();
@@ -3470,9 +3470,9 @@ void DivEngine::setOrder(unsigned char order) {
 void DivEngine::setSysFlags(int system, unsigned int flags, bool restart) {
   BUSY_BEGIN_SOFT;
   saveLock.lock();
-  song.systemFlags[system]=flags;
+  song.systemFlagsOld[system]=flags;
   saveLock.unlock();
-  disCont[system].dispatch->setFlags(song.systemFlags[system]);
+  disCont[system].dispatch->setFlags(song.systemFlagsOld[system]);
   disCont[system].setRates(got.rate);
   if (restart && isPlaying()) {
     playSub(false);
@@ -3630,7 +3630,7 @@ void DivEngine::rescanAudioDevices() {
 void DivEngine::initDispatch() {
   BUSY_BEGIN;
   for (int i=0; i<song.systemLen; i++) {
-    disCont[i].init(song.system[i],this,getChannelCount(song.system[i]),got.rate,song.systemFlags[i]);
+    disCont[i].init(song.system[i],this,getChannelCount(song.system[i]),got.rate,song.systemFlagsOld[i]);
     disCont[i].setRates(got.rate);
     disCont[i].setQuality(lowQuality);
   }
diff --git a/src/engine/fileOps.cpp b/src/engine/fileOps.cpp
index 0d8817ebf..e6e97fffe 100644
--- a/src/engine/fileOps.cpp
+++ b/src/engine/fileOps.cpp
@@ -1235,7 +1235,7 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
 
     // system props
     for (int i=0; i<32; i++) {
-      ds.systemFlags[i]=reader.readI();
+      ds.systemFlagsOld[i]=reader.readI();
     }
 
     // handle compound systems
@@ -2373,7 +2373,7 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
     ds.systemLen=(chCount+3)/4;
     for(int i=0; i<ds.systemLen; i++) {
       ds.system[i]=DIV_SYSTEM_AMIGA;
-      ds.systemFlags[i]=1|(80<<8)|(bypassLimits?4:0)|((ds.systemLen>1 || bypassLimits)?2:0); // PAL
+      ds.systemFlagsOld[i]=1|(80<<8)|(bypassLimits?4:0)|((ds.systemLen>1 || bypassLimits)?2:0); // PAL
     }
     for(int i=0; i<chCount; i++) {
       ds.subsong[0]->chanShow[i]=true;
@@ -2579,7 +2579,7 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
     ds.system[0]=DIV_SYSTEM_AMIGA;
     ds.systemVol[0]=64;
     ds.systemPan[0]=0;
-    ds.systemFlags[0]=1|(80<<8); // PAL
+    ds.systemFlagsOld[0]=1|(80<<8); // PAL
     ds.systemName="Amiga";
 
     seqLen=reader.readI_BE();
@@ -3219,11 +3219,11 @@ bool DivEngine::loadFTM(unsigned char* file, size_t len) {
         }
         if (expansions&16) {
           ds.system[systemID]=DIV_SYSTEM_N163;
-          ds.systemFlags[systemID++]=n163Chans;
+          ds.systemFlagsOld[systemID++]=n163Chans;
         }
         if (expansions&32) {
           ds.system[systemID]=DIV_SYSTEM_AY8910;
-          ds.systemFlags[systemID++]=38; // Sunsoft 5B
+          ds.systemFlagsOld[systemID++]=38; // Sunsoft 5B
         }
         ds.systemLen=systemID;
 
@@ -3734,7 +3734,7 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
   }
 
   for (int i=0; i<32; i++) {
-    w->writeI(song.systemFlags[i]);
+    w->writeI(song.systemFlagsOld[i]);
   }
 
   // song name
diff --git a/src/engine/song.h b/src/engine/song.h
index b708ac0fb..975cc6e86 100644
--- a/src/engine/song.h
+++ b/src/engine/song.h
@@ -25,6 +25,7 @@
 #define DIV_MAX_CHANS 128
 
 #include "../ta-utils.h"
+#include "config.h"
 #include "orders.h"
 #include "instrument.h"
 #include "pattern.h"
@@ -232,202 +233,10 @@ struct DivSong {
   unsigned char systemLen;
   signed char systemVol[32];
   signed char systemPan[32];
-  // interpretation of these flags varies depending on system.
-  // - most systems:
-  //   - bit 0: PAL
-  // - NES:
-  //   - bit 0-1: system type
-  //     - 0: NTSC
-  //     - 1: PAL
-  //     - 2: Dendy
-  // - SMS/SN76489:
-  //   - bit 0-1, 8-15: clock rate
-  //     - 0000: 3.58MHz (NTSC)
-  //     - 0001: 3.55MHz (PAL)
-  //     - 0002: 4MHz (Other)
-  //     - 0003: 1.79MHz (half NTSC)
-  //     - 0100: 3MHz
-  //     - 0101: 2MHz
-  //     - 0102: 447KHz (NTSC / 8)
-  //   - bit 2-3, 6-7: chip type
-  //     - 00: Sega VDP (16-bit noise)
-  //     - 04: real SN76489 (15-bit noise)
-  //     - 08: real SN76489 with Atari-like short noise buzz (15-bit noise)
-  //     - 0c: Game Gear (16-bit noise, stereo)
-  //     - 40: real SN76489A (17-bit noise)
-  //     - 44: real SN76496 (17-bit noise)
-  //     - 48: NCR 8496 (16-bit noise)
-  //     - 4c: Tandy PSSJ-3 (16-bit noise)
-  //     - 80: real SN94624 (15-bit noise)
-  //     - 84: real SN76494 (17-bit noise)
-  //   - bit 4: disable noise phase reset
-  // - YM2612/YM3438:
-  //   - bit 0-30: clock rate
-  //     - 0: Genesis NTSC (7.67MHz)
-  //     - 1: Genesis PAL (7.61MHz)
-  //     - 2: FM Towns (8MHz)
-  //     - 3: AtGames Genesis (6.13MHz)
-  //     - 4: Sega System 32 (8.06MHz)
-  //   - bit 31: DAC distortion
-  //     - 0: disable
-  //     - 1: enable
-  // - YM2151:
-  //   - bit 0-7: clock rate
-  //     - 0: 3.58MHz (NTSC)
-  //     - 1: 3.55MHz (PAL)
-  //     - 2: 4MHz
-  // - YM2610(B):
-  //   - bit 0-7: clock rate
-  //     - 0: 8MHz (Neo Geo MVS)
-  //     - 1: 8.06MHz (Neo Geo AES)
-  // - AY-3-8910/AY8930:
-  //   - bit 0-3: clock rate
-  //     - 0: 1.79MHz (MSX NTSC)
-  //     - 1: 1.77MHz (ZX Spectrum, MSX PAL, etc.)
-  //     - 2: 1.75MHz (ZX Spectrum)
-  //     - 3: 2MHz (Atari ST)
-  //     - 4: 1.5MHz (Vectrex)
-  //     - 5: 1MHz (Amstrad CPC)
-  //     - 6: 0.89MHz (Sunsoft 5B)
-  //     - 7: 1.67MHz
-  //     - 8: 0.83MHz (Sunsoft 5B on PAL)
-  //     - 9: 1.10MHz (Gamate/VIC-20 PAL)
-  //     - 10: 2.097152MHz (Game Boy)
-  //     - 11: 3.58MHz (Darky)
-  //     - 12: 3.6MHz (Darky)
-  //     - 13: 1.25MHz
-  //     - 14: 1.536MHz
-  //   - bit 4-5: chip type (ignored on AY8930)
-  //     - 0: AY-3-8910 or similar
-  //     - 1: YM2149
-  //     - 2: Sunsoft 5B
-  //     - 3: AY-3-8914
-  //   - bit 6: stereo (ignored on Sunsoft 5B)
-  //     - 0: mono
-  //     - 1: stereo ABC
-  //   - bit 7: clock divider pin (YM2149, AY8930)
-  //     - 0: high (disable divider)
-  //     - 1: low (internally divided to half)
-  // - SAA1099:
-  //   - bit 0-1: clock rate
-  //     - 0: 8MHz (SAM Coupé)
-  //     - 1: 7.15MHz (Game Blaster, NTSC)
-  //     - 2: 7.09MHz (PAL)
-  // - Amiga:
-  //   - bit 0: clock rate
-  //     - 0: 7.15MHz (NTSC)
-  //     - 1: 7.09MHz (PAL)
-  //   - bit 1: model
-  //     - 0: Amiga 500
-  //     - 1: Amiga 1200
-  //   - bit 8-14: stereo separation
-  //     - 0 is 0% while 127 is 100%
-  // - PC Speaker:
-  //   - bit 0-1: speaker type
-  //     - 0: unfiltered
-  //     - 1: cone
-  //     - 2: piezo
-  //     - 3: real (TODO)
-  // - QSound:
-  //   - bit 12-20: echo feedback
-  //     - Valid values are 0-255
-  //   - bit 0-11: echo delay length
-  //     - Valid values are 0-2725
-  //     - 0 is max length, 2725 is min length
-  // - OPLL:
-  //   - bit 0-3: clock rate
-  //     - 0: NTSC (3.58MHz)
-  //     - 1: PAL (3.55MHz)
-  //     - 2: Other (4MHz)
-  //     - 3: half NTSC (1.79MHz)
-  //   - bit 4-7: patch set
-  //     - 0: YM2413
-  //     - 1: YMF281
-  //     - 2: YM2423
-  //     - 3: VRC7
-  //     - 4: custom (TODO)
-  // - X1-010:
-  //   - bit 0-3: clock rate
-  //     - 0: 16MHz (Seta 1)
-  //     - 1: 16.67MHz (Seta 2)
-  //   - bit 4: stereo
-  //     - 0: mono
-  //     - 1: stereo
-  // - YM2203:
-  //   - bit 0-4: clock rate
-  //     - 0: 3.58MHz (NTSC)
-  //     - 1: 3.55MHz (PAL)
-  //     - 2: 4MHz
-  //     - 3: 3MHz
-  //     - 4: 3.9936MHz (PC-88, PC-98)
-  //     - 5: 1.5MHz
-  //   - bit 5-6: output rate
-  //     - 0: FM: clock / 72, SSG: clock / 16
-  //     - 1: FM: clock / 36, SSG: clock / 8
-  //     - 2: FM: clock / 24, SSG: clock / 4
-  // - YM2608:
-  //   - bit 0-4: clock rate
-  //     - 0: 8MHz
-  //     - 1: 7.987MHz (PC-88, PC-98)
-  //   - bit 5-6: output rate
-  //     - 0: FM: clock / 144, SSG: clock / 32
-  //     - 1: FM: clock / 72, SSG: clock / 16
-  //     - 2: FM: clock / 48, SSG: clock / 8
-  // - YM3526, YM3812, Y8950:
-  //   - bit 0-7: clock rate
-  //     - 0: 3.58MHz (NTSC)
-  //     - 1: 3.55MHz (PAL)
-  //     - 2: 4MHz
-  //     - 3: 3MHz
-  //     - 4: 3.9936MHz (PC-88, PC-98)
-  //     - 5: 3.5MHz
-  // - YMF262:
-  //   - bit 0-7: clock rate
-  //     - 0: 14.32MHz (NTSC)
-  //     - 1: 14.19MHz (PAL)
-  //     - 2: 14MHz
-  //     - 3: 16MHz
-  //     - 4: 15MHz
-  // - YMF289B: (TODO)
-  //   - bit 0-7: clock rate
-  //     - 0: 33.8688MHz
-  //     - 1: 28.64MHz (NTSC)
-  //     - 2: 28.38MHz (PAL)
-  // - MSM6295:
-  //   - bit 0-6: clock rate
-  //     - 0: 1MHz
-  //     - 1: 1.056MHz
-  //     - 2: 4MHz
-  //     - 3: 4.224MHz
-  //     - 4: 3.58MHz (NTSC)
-  //     - 5: 1.79MHz (Half NTSC)
-  //     - 6: 1.023MHz
-  //     - 7: 0.895MHz (Quarter NTSC)
-  //     - 8: 2MHz
-  //     - 9: 2.112MHz
-  //     - 10: 0.875MHz
-  //     - 11: 0.9375MHz
-  //     - 12: 1.5MHz
-  //     - 13: 3MHz
-  //     - 14: 1.193MHz
-  //   - bit 7: Output rate
-  //     - 0: clock / 132
-  //     - 1: clock / 165
-  // - SCC/+:
-  //   - bit 0-6: clock rate
-  //     - 0: 1.79MHz (MSX NTSC)
-  //     - 1: 1.77MHz (PAL)
-  //     - 2: 1.5MHz
-  //     - 3: 2MHz
-  // - YMZ280B:
-  //   - bit 0-7: clock rate
-  //     - 0: 16.9344MHz
-  //     - 1: 14.32MHz (NTSC)
-  //     - 2: 14.19MHz (PAL)
-  //     - 3: 16MHz
-  //     - 4: 16.67MHz
-  //     - 5: 14MHz
-  unsigned int systemFlags[32];
+  // this one will be removed soon...
+  unsigned int systemFlagsOld[32];
+  // ...and replaced with... this!
+  DivConfig systemFlags[32];
 
   // song information
   String name, author, systemName;
@@ -623,7 +432,7 @@ struct DivSong {
       system[i]=DIV_SYSTEM_NULL;
       systemVol[i]=64;
       systemPan[i]=0;
-      systemFlags[i]=0;
+      systemFlagsOld[i]=0;
     }
     subsong.push_back(new DivSubSong);
     system[0]=DIV_SYSTEM_YM2612;
diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index 9a10d26c0..27c347145 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -61,7 +61,7 @@ String DivEngine::getSongSystemLegacyName(DivSong& ds, bool isMultiSystemAccepta
       return "help! what's going on!";
     case 1:
       if (ds.system[0]==DIV_SYSTEM_AY8910) {
-        switch (ds.systemFlags[0]&0x3f) {
+        switch (ds.systemFlagsOld[0]&0x3f) {
           case 0: // AY-3-8910, 1.79MHz
           case 1: // AY-3-8910, 1.77MHz
           case 2: // AY-3-8910, 1.75MHz
@@ -88,35 +88,35 @@ String DivEngine::getSongSystemLegacyName(DivSong& ds, bool isMultiSystemAccepta
             return "Intellivision (PAL)";
 
           default:
-            if ((ds.systemFlags[0]&0x30)==0x00) {
+            if ((ds.systemFlagsOld[0]&0x30)==0x00) {
               return "AY-3-8910";
-            } else if ((ds.systemFlags[0]&0x30)==0x10) {
+            } else if ((ds.systemFlagsOld[0]&0x30)==0x10) {
               return "Yamaha YM2149";
-            } else if ((ds.systemFlags[0]&0x30)==0x20) {
+            } else if ((ds.systemFlagsOld[0]&0x30)==0x20) {
               return "Overclocked Sunsoft 5B";
-            } else if ((ds.systemFlags[0]&0x30)==0x30) {
+            } else if ((ds.systemFlagsOld[0]&0x30)==0x30) {
               return "Intellivision";
             }
         }
       } else if (ds.system[0]==DIV_SYSTEM_SMS) {
-        switch (ds.systemFlags[0]&0x0f) {
+        switch (ds.systemFlagsOld[0]&0x0f) {
           case 0: case 1:
             return "Sega Master System";
           case 6:
             return "BBC Micro";
         }
       } else if (ds.system[0]==DIV_SYSTEM_YM2612) {
-        switch (ds.systemFlags[0]&3) {
+        switch (ds.systemFlagsOld[0]&3) {
           case 2:
             return "FM Towns";
         }
       } else if (ds.system[0]==DIV_SYSTEM_YM2151) {
-        switch (ds.systemFlags[0]&3) {
+        switch (ds.systemFlagsOld[0]&3) {
           case 2:
             return "Sharp X68000";
         }
       } else if (ds.system[0]==DIV_SYSTEM_SAA1099) {
-        switch (ds.systemFlags[0]&3) {
+        switch (ds.systemFlagsOld[0]&3) {
           case 0:
             return "SAM Coupé";
         }
diff --git a/src/engine/vgmOps.cpp b/src/engine/vgmOps.cpp
index c0dc88955..dd5e1f37a 100644
--- a/src/engine/vgmOps.cpp
+++ b/src/engine/vgmOps.cpp
@@ -939,7 +939,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
         if (!hasSN) {
           hasSN=disCont[i].dispatch->chipClock;
           willExport[i]=true;
-          switch ((song.systemFlags[i]>>2)&3) {
+          switch ((song.systemFlagsOld[i]>>2)&3) {
             case 1: // real SN
               snNoiseConfig=3;
               snNoiseSize=15;
@@ -1054,7 +1054,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
             ayConfig=0x03;
             hasClockDivider=true;
           } else {
-            switch ((song.systemFlags[i]>>4)&3) {
+            switch ((song.systemFlagsOld[i]>>4)&3) {
               default:
               case 0: // AY8910
                 ayConfig=0x00;
@@ -1073,10 +1073,10 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
                 break;
             }
           }
-          if (hasClockDivider && ((song.systemFlags[i]>>7)&1)) {
+          if (hasClockDivider && ((song.systemFlagsOld[i]>>7)&1)) {
             ayFlags|=0x10;
           }
-          if (hasStereo && ((song.systemFlags[i]>>6)&1)) {
+          if (hasStereo && ((song.systemFlagsOld[i]>>6)&1)) {
             ayFlags|=0x80;
           }
           willExport[i]=true;
@@ -1304,7 +1304,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
         // chips even though the only difference is the output resolution
         // these system types are currently handled by reusing isSecond flag
         // also this system is not dual-able
-        if ((song.systemFlags[i]>>4)==1) {
+        if ((song.systemFlagsOld[i]>>4)==1) {
           if (!hasRFC1) {
             hasRFC1=disCont[i].dispatch->chipClock;
             isSecond[i]=true;
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 4c7850adf..9ce08ab58 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -3438,7 +3438,7 @@ bool FurnaceGUI::loop() {
         if (ImGui::BeginMenu("configure chip...")) {
           for (int i=0; i<e->song.systemLen; i++) {
             if (ImGui::TreeNode(fmt::sprintf("%d. %s##_SYSP%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
-              drawSysConf(i,e->song.system[i],e->song.systemFlags[i],true);
+              drawSysConf(i,e->song.system[i],e->song.systemFlagsOld[i],true);
               ImGui::TreePop();
             }
           }
diff --git a/src/gui/insEdit.cpp b/src/gui/insEdit.cpp
index a8fbf48dc..de770768e 100644
--- a/src/gui/insEdit.cpp
+++ b/src/gui/insEdit.cpp
@@ -1904,7 +1904,7 @@ void FurnaceGUI::drawInsEdit() {
                     if (e->song.system[i]==DIV_SYSTEM_VRC7) {
                       isPresent[3]=true;
                     } else if (e->song.system[i]==DIV_SYSTEM_OPLL || e->song.system[i]==DIV_SYSTEM_OPLL_DRUMS) {
-                      isPresent[(e->song.systemFlags[i]>>4)&3]=true;
+                      isPresent[(e->song.systemFlagsOld[i]>>4)&3]=true;
                     }
                   }
                   if (!isPresent[0] && !isPresent[1] && !isPresent[2] && !isPresent[3]) {
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index 805072f16..b55a064c5 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -273,7 +273,7 @@ void FurnaceGUI::drawSettings() {
               settings.initialSys.push_back(e->song.system[i]);
               settings.initialSys.push_back(e->song.systemVol[i]);
               settings.initialSys.push_back(e->song.systemPan[i]);
-              settings.initialSys.push_back(e->song.systemFlags[i]);
+              settings.initialSys.push_back(e->song.systemFlagsOld[i]);
             }
             settings.initialSysName=e->song.systemName;
           }
diff --git a/src/gui/sysManager.cpp b/src/gui/sysManager.cpp
index 386d26583..5d7a59c73 100644
--- a/src/gui/sysManager.cpp
+++ b/src/gui/sysManager.cpp
@@ -70,7 +70,7 @@ void FurnaceGUI::drawSysManager() {
         }
         ImGui::TableNextColumn();
         if (ImGui::TreeNode(fmt::sprintf("%d. %s##_SYSM%d",i+1,getSystemName(e->song.system[i]),i).c_str())) {
-          drawSysConf(i,e->song.system[i],e->song.systemFlags[i],true);
+          drawSysConf(i,e->song.system[i],e->song.systemFlagsOld[i],true);
           ImGui::TreePop();
         }
         ImGui::TableNextColumn();