--- SIDPlayer/src/sys.h	2000/09/19 15:34:11	1.2
+++ SIDPlayer/src/sys.h	2003/10/21 16:56:19	1.5
@@ -1,7 +1,7 @@
 /*
  *  sys.h - System-dependant functions
  *
- *  SIDPlayer (C) Copyright 1996-2000 Christian Bauer
+ *  SIDPlayer (C) Copyright 1996-2003 Christian Bauer
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -57,7 +57,12 @@ typedef struct {
 #define SDL_PauseAudio(onoff)
 #define SDL_LockAudio()
 #define SDL_UnlockAudio()
+#define SDL_GetError() ("unknown error")
 
 #endif
 
+// Microsecond-resolution timing functions
+extern uint64 GetTicks_usec();
+extern void Delay_usec(uint32 usec);
+
 #endif