Fixed 'magic number' issues when creating a System for the Console.

Technically, the magic numbers are still being used, but now they're
no longer exposed outside the System class by default.


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2912 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba

src/emucore/Console.cxx

@@ -87,7 +87,7 @@ Console::Console(OSystem& osystem, Cartridge& cart, const Properties& props)
   mySwitches = new Switches(myEvent, myProperties);
 
   // Construct the system and components
-  mySystem = new System(13, 6);
+  mySystem = new System();
 
   // The real controllers for this console will be added later
   // For now, we just add dummy joystick controllers, since autodetection

src/emucore/System.hxx

@@ -55,7 +55,7 @@ class System : public Serializable
       @param n Log base 2 of the addressing space size
       @param m Log base 2 of the page size
     */
-    System(uInt16 n, uInt16 m);
+    System(uInt16 n = 13, uInt16 m = 6);
 
     /**
       Destructor