From 35c87c5aeabdb56d99a0b866813a9eab31b87580 Mon Sep 17 00:00:00 2001
From: Asnivor <coding@asnitech.co.uk>
Date: Tue, 27 Mar 2018 16:38:08 +0100
Subject: [PATCH] ZXHawk: Fixed AY-3-8912 volume control (values under 50 were
 registering as maxvolume) - #1158

---
 .../SinclairSpectrum/Hardware/SoundOuput/AYChip.cs         | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/SoundOuput/AYChip.cs b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/SoundOuput/AYChip.cs
index d2d015ff53..161b93176b 100644
--- a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/SoundOuput/AYChip.cs
+++ b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/SoundOuput/AYChip.cs
@@ -526,7 +526,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
         /// <summary>
         /// The current volume
         /// </summary>
-        private int _volume = 50;
+        private int _volume = 75;
 
         /// <summary>
         /// Volume tables state
@@ -553,7 +553,10 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
         /// </summary>
         private void UpdateVolume()
         {
-            var vol = ((ulong)0xFFFF * (ulong)_volume / 100UL) - 20000 ;
+            int upperFloor = 40000;
+            var inc = (0xFFFF - upperFloor) / 100;
+
+            var vol = inc * _volume; // ((ulong)0xFFFF * (ulong)_volume / 100UL) - 20000 ;
             _volumeTables = new uint[6][];
 
             // parent array