Added fast(), slow() and c64mode()

git-svn-id: svn://svn.cc65.org/cc65/trunk@1982 b7a2c559-68d2-44c3-8de9-860c34a00d81

include/c128.h

@@ -98,6 +98,17 @@
 void toggle_videomode (void);
 /* Toggle the video mode between 40 and 80 chars (calls SWAPPER) */
 
+void c64mode (void);
+/* Switch the C128 into C64 mode. Note: This function will not return! */
+
+void fast (void);
+/* Switch the CPU into 2MHz mode. Note: This will disable video when in
+ * 40 column mode.
+ */
+
+void slow (void);
+/* Switch the CPU into 1MHz mode. */
+
 
 
 /* End of c128.h */