From 43390ddc2452b24097ba4ca2cb29d3942272a553 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Banaan=20Ananas?=
 <happppp@users.noreply.github.com>
Date: Fri, 28 Jun 2013 20:21:00 +0000
Subject: [PATCH] (add note)

---
 src/emu/sound/ymf271.c     | 12 ++++++------
 src/mame/drivers/taito_h.c |  1 +
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/emu/sound/ymf271.c b/src/emu/sound/ymf271.c
index 8fac34adabf..f6238ab3480 100644
--- a/src/emu/sound/ymf271.c
+++ b/src/emu/sound/ymf271.c
@@ -454,12 +454,12 @@ void ymf271_device::update_pcm(int slotnum, INT32 *mixp, int length)
 				// overflow
 				slot->stepptr &= 0xffff;
 				slot->stepptr |= ((UINT64)slot->loopaddr<<16);
-			}
-			if ((slot->stepptr>>16) > slot->endaddr)
-			{
-				// still overflow? (triggers in rdft2, rarely)
-				slot->stepptr &= 0xffff;
-				slot->stepptr |= ((UINT64)slot->endaddr<<16);
+				if ((slot->stepptr>>16) > slot->endaddr)
+				{
+					// still overflow? (triggers in rdft2, rarely)
+					slot->stepptr &= 0xffff;
+					slot->stepptr |= ((UINT64)slot->endaddr<<16);
+				}
 			}
 		}
 
diff --git a/src/mame/drivers/taito_h.c b/src/mame/drivers/taito_h.c
index 70875b4a71e..9816809b0bc 100644
--- a/src/mame/drivers/taito_h.c
+++ b/src/mame/drivers/taito_h.c
@@ -425,6 +425,7 @@ static INPUT_PORTS_START( tetristh )
 	TAITO_MACHINE_NO_COCKTAIL_LOC(SW1)
 	TAITO_COINAGE_JAPAN_OLD_LOC(SW1)
 
+	// TODO: verify/complete DSWB
 	PORT_START("DSWB")
 	TAITO_DIFFICULTY_LOC(SW2)
 	PORT_DIPUNKNOWN_DIPLOC( 0x04, 0x04, "SW2:3" )