diff --git a/src/burn/drv/capcom/cps.h b/src/burn/drv/capcom/cps.h
index 5c995b55a..ca9b41d97 100644
--- a/src/burn/drv/capcom/cps.h
+++ b/src/burn/drv/capcom/cps.h
@@ -169,6 +169,16 @@ INT32 CpsRunInit();
 INT32 CpsRunExit();
 INT32 Cps1Frame();
 INT32 Cps2Frame();
+typedef INT32 (*CpsRunInitCallback)();
+extern CpsRunInitCallback CpsRunInitCallbackFunction;
+typedef INT32 (*CpsRunExitCallback)();
+extern CpsRunExitCallback CpsRunExitCallbackFunction;
+typedef INT32 (*CpsRunResetCallback)();
+extern CpsRunResetCallback CpsRunResetCallbackFunction;
+typedef void (*CpsRunFrameStartCallback)();
+extern CpsRunFrameStartCallback CpsRunFrameStartCallbackFunction;
+typedef void (*CpsRunFrameEndCallback)();
+extern CpsRunFrameEndCallback CpsRunFrameEndCallbackFunction;
 
 inline static UINT8* CpsFindGfxRam(INT32 nAddr,INT32 nLen)
 {
@@ -411,3 +421,11 @@ void slammast_decode();
 
 // cps2_crypt.cpp
 void cps2_decrypt_game_data();
+
+// fcrash_snd.cpp
+void FrcashSoundCommand(UINT16 d);
+INT32 FcrashSoundInit();
+INT32 FcrashSoundReset();
+INT32 FcrashSoundExit();
+void FcrashSoundFrameStart();
+void FcrashSoundFrameEnd();
diff --git a/src/burn/drv/capcom/cps_run.cpp b/src/burn/drv/capcom/cps_run.cpp
index 68d21ccb6..a927cf93c 100644
--- a/src/burn/drv/capcom/cps_run.cpp
+++ b/src/burn/drv/capcom/cps_run.cpp
@@ -19,6 +19,12 @@ INT32 nIrqLine50, nIrqLine52;
 
 INT32 nCpsNumScanlines = 259;
 
+CpsRunInitCallback CpsRunInitCallbackFunction = NULL;
+CpsRunInitCallback CpsRunExitCallbackFunction = NULL;
+CpsRunResetCallback CpsRunResetCallbackFunction = NULL;
+CpsRunFrameStartCallback CpsRunFrameStartCallbackFunction = NULL;
+CpsRunFrameEndCallback CpsRunFrameEndCallbackFunction = NULL;
+
 static void CpsQSoundCheatSearchCallback()
 {
 	// Q-Sound Shared RAM ranges - not useful for cheat searching, and runs the Z80
@@ -65,6 +71,10 @@ static INT32 DrvReset()
 		QsndReset();
 	}
 	
+	if (CpsRunResetCallbackFunction) {
+		CpsRunResetCallbackFunction();
+	}
+	
 	HiscoreReset();
 
 	return 0;
@@ -134,6 +144,11 @@ INT32 CpsRunInit()
 	}
 
 	if (Cps == 2 || PangEEP || Cps1Qs == 1) EEPROMReset();
+	
+	if (CpsRunInitCallbackFunction) {
+		CpsRunInitCallbackFunction();
+	}
+	
 	DrvReset();
 
 	//Init Draw Function
@@ -168,6 +183,15 @@ INT32 CpsRunExit()
 	CpsMemExit();
 
 	SekExit();
+	
+	if (CpsRunExitCallbackFunction) {
+		CpsRunExitCallbackFunction();
+		CpsRunExitCallbackFunction = NULL;
+	}
+	CpsRunInitCallbackFunction = NULL;
+	CpsRunResetCallbackFunction = NULL;
+	CpsRunFrameStartCallbackFunction = NULL;
+	CpsRunFrameEndCallbackFunction = NULL;
 
 	return 0;
 }
@@ -269,6 +293,10 @@ INT32 Cps1Frame()
 			PsndNewFrame();
 		}
 	}
+	
+	if (CpsRunFrameStartCallbackFunction) {
+		CpsRunFrameStartCallbackFunction();
+	}
 
 	nCpsCycles = (INT32)((INT64)nCPS68KClockspeed * nBurnCPUSpeedAdjust >> 8);
 
@@ -315,6 +343,10 @@ INT32 Cps1Frame()
 			ZetClose();
 		}
 	}
+	
+	if (CpsRunFrameEndCallbackFunction) {
+		CpsRunFrameEndCallbackFunction();
+	}
 
 	nCpsCyclesExtra = SekTotalCycles() - nCpsCycles;
 
diff --git a/src/burn/drv/capcom/d_cps1.cpp b/src/burn/drv/capcom/d_cps1.cpp
index 9fdb5a636..741e7fe83 100644
--- a/src/burn/drv/capcom/d_cps1.cpp
+++ b/src/burn/drv/capcom/d_cps1.cpp
@@ -10925,6 +10925,11 @@ UINT8 __fastcall CawingblInputRead(UINT32 a)
 void __fastcall CawingblInputWrite(UINT32 a, UINT8 d)
 {
 	switch (a) {
+		case 0x882006: {
+			FrcashSoundCommand(d);
+			return;
+		}
+		
 		default: {
 			bprintf(PRINT_NORMAL, _T("Input Write Byte %x, %x\n"), a, d);
 		}
@@ -10935,11 +10940,18 @@ static INT32 CawingblInit()
 {
 	INT32 nRet = 0;
 	
+	Cps1DisablePSnd = 1;
+	
 	CpsLayer1XOffs = 0xffc0;
 //	CpsLayer2XOffs = 0xffc0;
 //	CpsLayer3XOffs = 0xffc0;
 
 	Cps1GfxLoadCallbackFunction = CpsLoadTilesCawingbl;
+	CpsRunInitCallbackFunction = FcrashSoundInit;
+	CpsRunResetCallbackFunction = FcrashSoundReset;
+	CpsRunExitCallbackFunction = FcrashSoundExit;
+	CpsRunFrameStartCallbackFunction = FcrashSoundFrameStart;
+	CpsRunFrameEndCallbackFunction = FcrashSoundFrameEnd;
 	
 	nRet = DrvInit();
 	
@@ -11181,6 +11193,16 @@ void __fastcall FcrashInputWriteByte(UINT32 a, UINT8 d)
 void __fastcall FcrashInputWriteWord(UINT32 a, UINT16 d)
 {
 	switch (a) {
+		case 0x880006: {
+			FrcashSoundCommand(d);
+			return;
+		}
+		
+		case 0x890000: {
+			// ???
+			return;
+		}
+		
 		default: {
 			bprintf(PRINT_NORMAL, _T("Input Write word %x, %x\n"), a, d);
 		}
@@ -11198,6 +11220,11 @@ static INT32 FcrashInit()
 	Cps1GfxLoadCallbackFunction = CpsLoadTilesFcrash;
 	Cps1ObjGetCallbackFunction = FcrashObjGet;
 	Cps1ObjDrawCallbackFunction = FcrashObjDraw;
+	CpsRunInitCallbackFunction = FcrashSoundInit;
+	CpsRunResetCallbackFunction = FcrashSoundReset;
+	CpsRunExitCallbackFunction = FcrashSoundExit;
+	CpsRunFrameStartCallbackFunction = FcrashSoundFrameStart;
+	CpsRunFrameEndCallbackFunction = FcrashSoundFrameEnd;
 	
 	INT32 nRet = DrvInit();
 	
@@ -11479,9 +11506,9 @@ void __fastcall Knightsb98WriteWord(UINT32 a, UINT16 d)
 
 static INT32 KnightsbInit()
 {
-	Cps1DisablePSnd = 1;
 	bCpsUpdatePalEveryFrame = 1;
 	Cps1OverrideLayers = 1;
+	Port6SoundWrite = 1;
 	
 	Cps1ObjGetCallbackFunction = DinopicObjGet;
 	Cps1ObjDrawCallbackFunction = FcrashObjDraw;
@@ -11507,6 +11534,28 @@ static INT32 Knightsb2Init()
 	return DrvInit();
 }
 
+static INT32 Knightsb4Init()
+{
+	Cps1DisablePSnd = 1;
+	bCpsUpdatePalEveryFrame = 1;
+	Cps1OverrideLayers = 1;
+	
+	Cps1ObjGetCallbackFunction = DinopicObjGet;
+	Cps1ObjDrawCallbackFunction = FcrashObjDraw;
+	
+	INT32 nRet = DrvInit();
+	
+	CpsBootlegSpriteRam = (UINT8*)BurnMalloc(0x2000);
+	
+	SekOpen(0);
+	SekMapMemory(CpsBootlegSpriteRam, 0x990000, 0x991FFF, SM_RAM);
+	SekMapHandler(1, 0x980000, 0x98ffff, SM_WRITE);
+	SekSetWriteWordHandler(1, Knightsb98WriteWord);
+	SekClose();
+	
+	return nRet;
+}
+
 static INT32 KodbInit()
 {
 	INT32 nRet = 0;
@@ -13380,7 +13429,7 @@ struct BurnDriver BurnDrvCpsFfightjh = {
 
 struct BurnDriver BurnDrvCpsFcrash = {
 	"fcrash", "ffight", NULL, NULL, "1990",
-	"Final Crash (bootleg)\0", "No sound, some sprite priority issues", "Playmark", "CPS1",
+	"Final Crash (bootleg)\0", NULL, "Playmark", "CPS1",
 	NULL, NULL, NULL, NULL,
 	BDF_GAME_WORKING | BDF_CLONE | BDF_BOOTLEG, 2, HARDWARE_CAPCOM_CPS1, GBF_SCRFIGHT, 0,
 	NULL, FcrashRomInfo, FcrashRomName, NULL, NULL, FfightInputInfo, FfightDIPInfo,
@@ -13540,7 +13589,7 @@ struct BurnDriver BurnDrvCpsKnightsja = {
 
 struct BurnDriver BurnDrvCpsKnightsb = {
 	"knightsb", "knights", NULL, NULL, "1991",
-	"Knights of the Round (911127 etc bootleg set 1)\0", "No sound", "bootleg", "CPS1",
+	"Knights of the Round (911127 etc bootleg set 1)\0", NULL, "bootleg", "CPS1",
 	NULL, NULL, NULL, NULL,
 	BDF_GAME_WORKING | BDF_CLONE | BDF_BOOTLEG, 3, HARDWARE_CAPCOM_CPS1, GBF_SCRFIGHT, 0,
 	NULL, KnightsbRomInfo, KnightsbRomName, NULL, NULL, KnightsInputInfo, KnightsDIPInfo,
@@ -13574,7 +13623,7 @@ struct BurnDriver BurnDrvCpsKnightsb4 = {
 	NULL, NULL, NULL, NULL,
 	BDF_GAME_WORKING | BDF_CLONE | BDF_BOOTLEG, 3, HARDWARE_CAPCOM_CPS1, GBF_SCRFIGHT, 0,
 	NULL, Knightsb4RomInfo, Knightsb4RomName, NULL, NULL, KnightsInputInfo, KnightsDIPInfo,
-	KnightsbInit, DrvExit, Cps1Frame, CpsRedraw, CpsAreaScan,
+	Knightsb4Init, DrvExit, Cps1Frame, CpsRedraw, CpsAreaScan,
 	&CpsRecalcPal, 0x1000, 384, 224, 4, 3
 };
 
diff --git a/src/burn/drv/capcom/fcrash_snd.cpp b/src/burn/drv/capcom/fcrash_snd.cpp
new file mode 100644
index 000000000..264cbe7ff
--- /dev/null
+++ b/src/burn/drv/capcom/fcrash_snd.cpp
@@ -0,0 +1,236 @@
+#include "cps.h"
+#include "burn_ym2203.h"
+#include "msm5205.h"
+
+static UINT8 *FcrashZ80Ram = NULL;
+static INT32 FcrashZ80BankAddress = 0;
+static INT32 FcrashSoundLatch = 0;
+static INT32 FcrashMSM5205Interleave = 0;
+static INT32 FcrashSampleBuffer1 = 0;
+static INT32 FcrashSampleBuffer2 = 0;
+static INT32 FcrashSampleSelect1 = 0;
+static INT32 FcrashSampleSelect2 = 0;
+
+void FrcashSoundCommand(UINT16 d)
+{
+	if (d & 0xff) {
+		INT32 nCyclesToDo = (INT64)SekTotalCycles() * nCpsZ80Cycles / nCpsCycles;
+		INT32 nFramePortion = (INT64)FcrashMSM5205Interleave * nCyclesToDo / nCpsZ80Cycles;
+		INT32 nCyclesPerPortion = nCyclesToDo / nFramePortion;
+		
+		for (INT32 i = 0; i < nFramePortion; i++) {
+			BurnTimerUpdate((i + 1) * nCyclesPerPortion);
+			MSM5205Update();
+		}
+
+		FcrashSoundLatch = d & 0xff;
+		ZetSetIRQLine(0, ZET_IRQSTATUS_ACK);
+	}
+}
+
+UINT8 __fastcall FcrashZ80Read(UINT16 a)
+{
+	switch (a) {
+		case 0xd800: {
+			return BurnYM2203Read(0, 0);
+		}
+		
+		case 0xdc00: {
+			return BurnYM2203Read(1, 0);
+		}
+		
+		case 0xe400: {
+			ZetSetIRQLine(0, ZET_IRQSTATUS_NONE);
+			return FcrashSoundLatch;
+		}
+		
+		default: {
+			bprintf(PRINT_NORMAL, _T("Z80 #1 Read => %04X\n"), a);
+		}
+	}
+
+	return 0;
+}
+
+void __fastcall FcrashZ80Write(UINT16 a, UINT8 d)
+{
+	switch (a) {
+		case 0xd800: {
+			BurnYM2203Write(0, 0, d);
+			return;
+		}
+		
+		case 0xd801: {
+			BurnYM2203Write(0, 1, d);
+			return;
+		}
+		
+		case 0xdc00: {
+			BurnYM2203Write(1, 0, d);
+			return;
+		}
+		
+		case 0xdc01: {
+			BurnYM2203Write(1, 1, d);
+			return;
+		}
+		
+		case 0xe000: {
+			MSM5205SetVolume(0, (d & 0x08) ? 0 : 30);
+			MSM5205SetVolume(1, (d & 0x10) ? 0 : 30);
+
+			FcrashZ80BankAddress = (d & 0x07) * 0x4000;
+			ZetMapArea(0x8000, 0xbfff, 0, CpsZRom + FcrashZ80BankAddress);
+			ZetMapArea(0x8000, 0xbfff, 2, CpsZRom + FcrashZ80BankAddress);
+			return;
+		}
+		
+		case 0xe800: {
+			FcrashSampleBuffer1 = d;
+			return;
+		}
+		
+		case 0xec00: {
+			FcrashSampleBuffer2 = d;
+			return;
+		}
+		
+		case 0xf002:
+		case 0xf004:
+		case 0xf006: {
+			// ???
+			return;
+		}
+		
+		default: {
+			bprintf(PRINT_NORMAL, _T("Z80 #1 Write => %04X, %02X\n"), a, d);
+		}
+	}
+}
+
+inline static INT32 FcrashSynchroniseStream(INT32 nSoundRate)
+{
+	return (INT64)(ZetTotalCycles() * nSoundRate / (24000000 / 6));
+}
+
+inline static double FcrashGetTime()
+{
+	return (double)ZetTotalCycles() / (24000000 / 6);
+}
+
+static void FcrashMSM5205Vck0()
+{
+	MSM5205DataWrite(0, FcrashSampleBuffer1 & 0x0f);
+	FcrashSampleBuffer1 >>= 4;
+	FcrashSampleSelect1 ^= 1;
+	if (FcrashSampleSelect1 == 0) {
+		ZetNmi();
+	}
+}
+
+static void FcrashMSM5205Vck1()
+{
+	MSM5205DataWrite(1, FcrashSampleBuffer2 & 0x0f);
+	FcrashSampleBuffer2 >>= 4;
+	FcrashSampleSelect2 ^= 1;
+}
+
+INT32 FcrashSoundInit()
+{
+	FcrashZ80Ram = (UINT8*)BurnMalloc(0x800);
+	
+	ZetInit(0);
+	ZetOpen(0);
+	ZetSetReadHandler(FcrashZ80Read);
+	ZetSetWriteHandler(FcrashZ80Write);
+	ZetMapArea(0x0000, 0x7fff, 0, CpsZRom + 0x00000);
+	ZetMapArea(0x0000, 0x7fff, 2, CpsZRom + 0x00000);
+	ZetMapArea(0x8000, 0xbfff, 0, CpsZRom + 0x08000);
+	ZetMapArea(0x8000, 0xbfff, 2, CpsZRom + 0x08000);
+	ZetMapArea(0xd000, 0xd7ff, 0, FcrashZ80Ram     );
+	ZetMapArea(0xd000, 0xd7ff, 1, FcrashZ80Ram     );
+	ZetMapArea(0xd000, 0xd7ff, 2, FcrashZ80Ram     );
+	ZetMemEnd();
+	ZetClose();
+	
+	BurnYM2203Init(2, 24000000 / 6, NULL, FcrashSynchroniseStream, FcrashGetTime, 0);
+	BurnTimerAttachZet(24000000 / 6);
+	BurnYM2203SetVolumeShift(2);
+	
+	MSM5205Init(0, FcrashSynchroniseStream, 24000000 / 64, FcrashMSM5205Vck0, MSM5205_S96_4B, 30, 1);
+	MSM5205Init(1, FcrashSynchroniseStream, 24000000 / 64, FcrashMSM5205Vck1, MSM5205_S96_4B, 30, 1);
+	
+	nCpsZ80Cycles = (24000000 / 6) * 100 / nBurnFPS;
+	
+	return 0;
+}
+
+INT32 FcrashSoundReset()
+{
+	ZetOpen(0);
+	ZetReset();
+	BurnYM2203Reset();
+	MSM5205Reset();
+	FcrashZ80BankAddress = 2;
+	ZetMapArea(0x8000, 0xbfff, 0, CpsZRom + FcrashZ80BankAddress);
+	ZetMapArea(0x8000, 0xbfff, 2, CpsZRom + FcrashZ80BankAddress);
+	ZetClose();
+	
+	FcrashSoundLatch = 0;
+	FcrashSampleBuffer1 = 0;
+	FcrashSampleBuffer2 = 0;
+	FcrashSampleSelect1 = 0;
+	FcrashSampleSelect2 = 0;
+	
+	return 0;
+}
+
+INT32 FcrashSoundExit()
+{
+	ZetExit();
+	BurnYM2203Exit();
+	MSM5205Exit();
+	
+	BurnFree(FcrashZ80Ram);
+	
+	FcrashZ80BankAddress = 0;
+	FcrashSoundLatch = 0;
+	FcrashMSM5205Interleave = 0;
+	FcrashSampleBuffer1 = 0;
+	FcrashSampleBuffer2 = 0;
+	FcrashSampleSelect1 = 0;
+	FcrashSampleSelect2 = 0;
+	
+	nCpsZ80Cycles = 0;
+
+	return 0;
+}
+
+void FcrashSoundFrameStart()
+{
+	FcrashMSM5205Interleave = MSM5205CalcInterleave(0, 24000000 / 6);
+	
+	ZetNewFrame();
+	ZetOpen(0);	
+}
+
+void FcrashSoundFrameEnd()
+{
+	INT32 nStartCycles = ZetTotalCycles();
+	INT32 nCyclesToDo = nCpsZ80Cycles - nStartCycles;
+	INT32 nFramePortion = (INT64)FcrashMSM5205Interleave * nCyclesToDo / nCpsZ80Cycles;
+	INT32 nCyclesPerPortion = nCyclesToDo / nFramePortion;
+	
+	for (INT32 i = 0; i < nFramePortion; i++) {
+		BurnTimerUpdate(nStartCycles + ((i + 1) * nCyclesPerPortion));
+		MSM5205Update();
+	}
+	BurnTimerEndFrame(nCpsZ80Cycles);
+	
+	if (pBurnSoundOut) {
+		BurnYM2203Update(pBurnSoundOut, nBurnSoundLen);
+		MSM5205Render(0, pBurnSoundOut, nBurnSoundLen);
+		MSM5205Render(1, pBurnSoundOut, nBurnSoundLen);
+	}
+	ZetClose();
+}