From 2057b1421cf274d5d3a670d8b6e64551174fb3d4 Mon Sep 17 00:00:00 2001
From: Stephen Anthony <sa666666@gmail.com>
Date: Wed, 8 Mar 2017 18:13:01 -0330
Subject: [PATCH] Set ROM launcher framerate to 30fps.  There's no need for it
 to be a full 60fps, and it reduces CPU usage up to 30% on some systems.

---
 Changes.txt             | 8 +++++---
 src/emucore/OSystem.cxx | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Changes.txt b/Changes.txt
index b117a1808..2d14b351c 100644
--- a/Changes.txt
+++ b/Changes.txt
@@ -45,6 +45,11 @@
     this bug has only ever occurred in Windows XP, but it's been there
     since Stella 4.1.
 
+  * When in 'ROM launcher mode', Stella now uses less CPU time.
+
+  * Added ROM properties for D.K. VCS homebrew ROM, thanks to Andreas
+    Dietrich.
+
   * For the Linux/UNIX port:
     - The settings directory now uses the XDG Base Directory Specification.
       In most cases, this means that your files will now be stored in
@@ -66,9 +71,6 @@
         cd ~/Library/Preferences
         mv net.sourceforge.Stella.plist Stella-emu.plist
 
-  * Added ROM properties for D.K. VCS homebrew ROM, thanks to Andreas
-    Dietrich.
-
   * Updated internal ROM properties database to ROM-Hunter version 12
     (thanks go to RomHunter for his tireless research in this area).
     Related to this, updated the snapshot collection.
diff --git a/src/emucore/OSystem.cxx b/src/emucore/OSystem.cxx
index 3e4949a63..c11b5c62f 100644
--- a/src/emucore/OSystem.cxx
+++ b/src/emucore/OSystem.cxx
@@ -425,7 +425,7 @@ bool OSystem::createLauncher(const string& startdir)
     myLauncher->reStack();
     myFrameBuffer->setCursorState();
 
-    setFramerate(60);
+    setFramerate(30);
     resetLoopTiming();
     status = true;
   }