From c13ef4a33f82c6dd17b0d8596dbb4fb832c7ae4d Mon Sep 17 00:00:00 2001
From: Barry Harris <44396066+barry65536@users.noreply.github.com>
Date: Sun, 19 Oct 2014 20:36:49 +0000
Subject: [PATCH] fix sf2b sound

---
 src/burn/drv/capcom/d_cps1.cpp     | 2 +-
 src/burn/drv/capcom/fcrash_snd.cpp | 2 ++
 src/burn/drv/capcom/sf2mdt_snd.cpp | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/burn/drv/capcom/d_cps1.cpp b/src/burn/drv/capcom/d_cps1.cpp
index 1afa9b0bc..a33fad9ef 100644
--- a/src/burn/drv/capcom/d_cps1.cpp
+++ b/src/burn/drv/capcom/d_cps1.cpp
@@ -18008,7 +18008,7 @@ struct BurnDriver BurnDrvCpsSf2thndr = {
 
 struct BurnDriver BurnDrvCpsSf2b = {
 	"sf2b", "sf2", NULL, NULL, "1992",
-	"Street Fighter II - The World Warrior (bootleg, 910214 etc, set 1)\0", "row scroll issues and missing sounds", "bootleg", "CPS1",
+	"Street Fighter II - The World Warrior (bootleg, 910214 etc, set 1  (with YM2151 + 2xMSM5205))\0", "row scroll issues", "bootleg", "CPS1",
 	NULL, NULL, NULL, NULL,
 	BDF_GAME_WORKING | BDF_CLONE | BDF_BOOTLEG, 2, HARDWARE_CAPCOM_CPS1, GBF_VSFIGHT, FBF_SF,
 	NULL, Sf2bRomInfo, Sf2bRomName, NULL, NULL, Sf2InputInfo, Sf2DIPInfo,
diff --git a/src/burn/drv/capcom/fcrash_snd.cpp b/src/burn/drv/capcom/fcrash_snd.cpp
index e04ba7ef6..a8194a754 100644
--- a/src/burn/drv/capcom/fcrash_snd.cpp
+++ b/src/burn/drv/capcom/fcrash_snd.cpp
@@ -21,6 +21,8 @@ void FcrashSoundCommand(UINT16 d)
 {
 	INT32 nCyclesToDo = ((INT64)SekTotalCycles() * nCpsZ80Cycles / nCpsCycles) - ZetTotalCycles();
 	INT32 nEnd = FcrashSoundPos + (INT64)FcrashMSM5205Interleave * nCyclesToDo / nCpsZ80Cycles;
+	
+	if (nEnd == FcrashSoundPos) nEnd += 1;
 		
 	for (INT32 i = FcrashSoundPos; i < nEnd; i++) {
 		BurnTimerUpdate((i + 1) * FcrashCyclesPerSegment);
diff --git a/src/burn/drv/capcom/sf2mdt_snd.cpp b/src/burn/drv/capcom/sf2mdt_snd.cpp
index 911eee119..bb02541a9 100644
--- a/src/burn/drv/capcom/sf2mdt_snd.cpp
+++ b/src/burn/drv/capcom/sf2mdt_snd.cpp
@@ -23,6 +23,8 @@ void Sf2mdtSoundCommand(UINT16 d)
 	INT32 nCyclesToDo = ((INT64)SekTotalCycles() * nCpsZ80Cycles / nCpsCycles) - ZetTotalCycles();
 	INT32 nEnd = Sf2mdtSoundPos + (INT64)Sf2mdtMSM5205Interleave * nCyclesToDo / nCpsZ80Cycles;
 	
+	if (nEnd == Sf2mdtSoundPos) nEnd += 1;
+	
 	for (INT32 i = Sf2mdtSoundPos; i < nEnd; i++) {
 		ZetRun(Sf2mdtCyclesPerSegment);
 		MSM5205Update();