initial keyboard demo

c_os/devices/Keyboard.cc

@@ -252,6 +252,22 @@ Key Keyboard::key_hit() {
 
     /* Hier muss Code eingefuegt werden. */
 
+    bool outbyte;
+    do {
+        outbyte = ctrl_port.inb() & outb;
+    } while (!outbyte);
+
+    // Ignore PS2 Mouse
+    bool auxbyte = ctrl_port.inb() & auxb;
+    if (auxbyte) {
+        return invalid;
+    }
+
+    code = (unsigned char)data_port.inb();
+    if (key_decoded()) {
+        return gather;
+    }
+
     return invalid;
 }
 

c_os/user/KeyboardDemo.cc

@@ -13,4 +13,9 @@
 void keyboard_demo() {
 
     /* Hier muess Code eingefuegt werden */
+
+    while (true) {
+        kout << kb.key_hit();
+        kout.flush();
+    }
 }