diff --git a/src/gui/presets.cpp b/src/gui/presets.cpp
index 061173d3..ee957691 100644
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@@ -55,6 +55,12 @@ void FurnaceGUI::initSystemPresets() {
       CH(DIV_SYSTEM_SMS, 32, 0, "")
     }
   );
+  ENTRY(
+    "Sega Genesis (CSM)", {
+      CH(DIV_SYSTEM_YM2612_CSM, 64, 0, ""),
+      CH(DIV_SYSTEM_SMS, 32, 0, "")
+    }
+  );
   ENTRY(
     "Sega Genesis (DualPCM)", {
       CH(DIV_SYSTEM_YM2612_DUALPCM, 64, 0, ""),
@@ -87,6 +93,16 @@ void FurnaceGUI::initSystemPresets() {
       )
     }
   );
+  ENTRY(
+    "Sega Genesis (CSM with Sega CD)", {
+      CH(DIV_SYSTEM_YM2612_CSM, 64, 0, ""),
+      CH(DIV_SYSTEM_SMS, 32, 0, ""),
+      CH(DIV_SYSTEM_RF5C68, 64, 0,
+        "clockSel=2\n"
+        "chipType=1\n"
+      )
+    }
+  );
   ENTRY(
     "Sega Master System", {
       CH(DIV_SYSTEM_SMS, 64, 0, "")
@@ -1076,6 +1092,12 @@ void FurnaceGUI::initSystemPresets() {
       CH(DIV_SYSTEM_RF5C68, 64, 0, "")
     }
   );
+  ENTRY(
+    "FM Towns (CSM)", {
+      CH(DIV_SYSTEM_YM2612_CSM, 64, 0, "clockSel=2"), // YM3438
+      CH(DIV_SYSTEM_RF5C68, 64, 0, "")
+    }
+  );
   ENTRY(
     "Commander X16", {
       CH(DIV_SYSTEM_VERA, 64, 0, ""),
@@ -1148,6 +1170,11 @@ void FurnaceGUI::initSystemPresets() {
       CH(DIV_SYSTEM_YM2612_EXT, 64, 0, "ladderEffect=true")
     }
   );
+  ENTRY(
+    "Yamaha YM2612 (OPN2) CSM", {
+      CH(DIV_SYSTEM_YM2612_CSM, 64, 0, "ladderEffect=true")
+    }
+  );
   ENTRY(
     "Yamaha YM2612 (OPN2) with DualPCM", {
       CH(DIV_SYSTEM_YM2612_DUALPCM, 64, 0, "ladderEffect=true")
@@ -1183,6 +1210,11 @@ void FurnaceGUI::initSystemPresets() {
       CH(DIV_SYSTEM_YM2612_EXT, 64, 0, "")
     }
   );
+  ENTRY(
+    "Yamaha YM3438 (OPN2C) CSM", {
+      CH(DIV_SYSTEM_YM2612_CSM, 64, 0, "")
+    }
+  );
   ENTRY(
     "Yamaha YM3438 (OPN2C) with DualPCM", {
       CH(DIV_SYSTEM_YM2612_DUALPCM, 64, 0, "")