final cleanup

c_os/devices/CGA_Stream.h

@@ -58,6 +58,8 @@ public:
         pos = 0;
     }
 
+    // CAn't make singleton because atexit
+
 //    ~CGA_Stream() override = default;
 
     void lock() { sem.p(); }

c_os/devices/PCSPK.h

@@ -73,9 +73,11 @@ public:
     // Konstruktor. Initialisieren der Ports.
     PCSPK() = default;
 
+    // Can't make singleton because atexit
+
     // Demo Sounds
-    void tetris();
-    void aerodynamic();
+    static void tetris();
+    static void aerodynamic();
 
     // Ton abspielen
     static void play(float f, int len);

c_os/devices/VESA.h

@@ -32,6 +32,8 @@ public:
 
     VESA() : log("VESA") {}
 
+    // Can't make singleton because atexit
+
     // Bestimmten Grafikmodus einschalten
     bool initGraphicMode(unsigned short mode);
     static void initTextMode();