frame advance improvements in sdl

src/drivers/sdl/input.cpp

@@ -334,12 +334,23 @@ KeyboardCommands()
     }
     
     g_config->getOption("SDL.Hotkeys.FrameAdvance", &key);
-    if(_keyonly(key)) {
-        // 8-10-08 - this freezes fceux for me - punkrockguy318
+    static bool frameAdvancing = false;
+    if(g_keyState[key])
+    {
+        if(frameAdvancing == false)
+        {
             FCEUI_FrameAdvance();
+            frameAdvancing = true;
+        }
+    }
+    else
+    {
+        if(frameAdvancing)
+        {
+            FCEUI_FrameAdvanceEnd();
+            frameAdvancing = false;
+        }
     }
-    
-
     
     g_config->getOption("SDL.Hotkeys.Reset", &key);
     if(_keyonly(key)) {

src/drivers/sdl/sdl-sound.cpp

@@ -149,6 +149,8 @@ void
 WriteSound(int32 *buf,
            int Count)
 {
+    extern int EmulationPaused;
+    if (EmulationPaused == 0)
         while(Count) {
             while(s_BufferIn == s_BufferSize) {
                 SDL_Delay(1);