From eada43fdd47ce7cfd515081ad4d9403ae34852f9 Mon Sep 17 00:00:00 2001
From: hap <happppp@users.noreply.github.com>
Date: Thu, 6 Jul 2023 00:30:24 +0200
Subject: k005289: fix off by 1 error

---
 src/devices/sound/k005289.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/devices/sound/k005289.cpp b/src/devices/sound/k005289.cpp
index ffdfb4f0588..f88f12c43f1 100644
--- a/src/devices/sound/k005289.cpp
+++ b/src/devices/sound/k005289.cpp
@@ -37,10 +37,6 @@
 #include "emu.h"
 #include "k005289.h"
 
-// is this an actual hardware limit? or just an arbitrary divider
-// to bring the output frequency down to a reasonable value for MAME?
-#define CLOCK_DIVIDER 32
-
 // device type definition
 DEFINE_DEVICE_TYPE(K005289, k005289_device, "k005289", "K005289 SCC")
 
@@ -97,7 +93,7 @@ void k005289_device::sound_stream_update(sound_stream &stream, std::vector<read_
 		for (int i = 0; i < 2; i++)
 		{
 			voice_t &v = m_voice[i];
-			if ((v.counter--) < 0)
+			if ((v.counter--) <= 0)
 			{
 				v.waveform = (v.waveform & ~0x1f) | ((v.waveform + 1) & 0x1f);
 				v.counter = v.frequency;
-- 
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