# HG changeset patch
# User TomW
# Date 1411900388 -3600
# Node ID 0710d7cb935f4f9cacac12cf3b063365e97451c6
# Parent  9a88154e8608d2007810b0d8f2fd6c0bafd92320
Silence PC speaker output at very high frequencies - fixes Lemmings and other games that use high frequency as "speaker off".

diff -r 9a88154e8608 -r 0710d7cb935f src/pit.c
--- a/src/pit.c	Sat Sep 27 18:39:06 2014 +0100
+++ b/src/pit.c	Sun Sep 28 11:33:08 2014 +0100
@@ -527,7 +527,12 @@
 
 void pit_speaker_timer(int new_out, int old_out)
 {
-        speakon = ppispeakon = new_out;
+        int l = pit.l[2] ? pit.l[2] : 0x10000;
+        if (l < 25)
+                speakon = 0;
+        else
+                speakon = new_out;
+        ppispeakon = new_out;
 }