From e625a977c10c94c1181821ef07fb9ffa19f42fe0 Mon Sep 17 00:00:00 2001
From: hap <happppp@users.noreply.github.com>
Date: Thu, 6 Jul 2023 15:52:50 +0200
Subject: [PATCH] k051649: more logical channel halt

---
 src/devices/sound/k051649.cpp | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/devices/sound/k051649.cpp b/src/devices/sound/k051649.cpp
index e98ad04d6d9..97fc9ca9298 100644
--- a/src/devices/sound/k051649.cpp
+++ b/src/devices/sound/k051649.cpp
@@ -137,20 +137,24 @@ void k051649_device::sound_stream_update(sound_stream &stream, std::vector<read_
 	{
 		for (sound_channel &voice : m_channel_list)
 		{
-			// channel is halted for freq < 9
-			if (voice.frequency > 8)
+			if (--voice.clock < 0)
 			{
-				if (--voice.clock < 0)
+				// channel is halted for freq < 9
+				if (voice.frequency < 9)
+				{
+					voice.clock = 0;
+					continue;
+				}
+				else
 				{
 					voice.counter = (voice.counter + 1) & 0x1f;
 					voice.clock = voice.frequency;
 				}
-				// scale to 11 bit digital output on chip
-				if (voice.key)
-					outputs[0].add_int(i, (voice.waveram[voice.counter] * voice.volume) >> 4, 1024);
 			}
-			else if (voice.clock > 0)
-				voice.clock--;
+
+			// scale to 11 bit digital output on chip
+			if (voice.key)
+				outputs[0].add_int(i, (voice.waveram[voice.counter] * voice.volume) >> 4, 1024);
 		}
 	}
 }