From 2e0c1878b54d0d5c90d5c47bb1dbda0d894399f3 Mon Sep 17 00:00:00 2001
From: iq_132 <1191709+iq132@users.noreply.github.com>
Date: Sat, 14 Jun 2014 18:56:31 +0000
Subject: [PATCH] Sound cpu (mcu) has an internal clock divider of 4. This
 fixes the sound for Dragon Buster.

---
 src/burn/drv/pre90s/d_skykid.cpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/burn/drv/pre90s/d_skykid.cpp b/src/burn/drv/pre90s/d_skykid.cpp
index 18db423ee..e4fdb5db7 100644
--- a/src/burn/drv/pre90s/d_skykid.cpp
+++ b/src/burn/drv/pre90s/d_skykid.cpp
@@ -261,13 +261,14 @@ STDDIPINFO(Drgnbstr)
 
 static inline void sync_HD63701(INT32 run)
 {
-	INT32 nNext = (INT32)((float)((102400.000 * nM6809CyclesTotal) / 25600));
+	INT32 nNext = nM6809CyclesTotal - nCyclesDone[1];
 
-	if (nNext > 0) {
+	if (nNext > 0)
+	{
 		if (run) {
-			nCyclesDone[1] += HD63701Run(nNext - nCyclesDone[1]);
+			nCyclesDone[1] += HD63701Run(nNext);
 		} else {
-			nCyclesDone[1] += nNext - nCyclesDone[1];
+			nCyclesDone[1] += nNext;
 		}
 	}
 }
@@ -809,9 +810,9 @@ static INT32 DrvFrame()
 	M6809NewFrame();
 	HD63701NewFrame();
 
-	INT32 nInterleave = 100;
+	INT32 nInterleave = 10;
 	INT32 nSoundBufferPos = 0;
-	INT32 nCyclesTotal[2] = { 1536000 / 60, 6144000 / 60 };
+	INT32 nCyclesTotal[2] = { 1536000 / 60, 1536000 / 60 };
 	nCyclesDone[0] = nCyclesDone[1] = 0;
 
 	for (INT32 i = 0; i < nInterleave; i++)