Add hulk.time and msleep()

src/hulk/pit.d

@@ -6,6 +6,7 @@ module hulk.pit;
 import hulk.cpu;
 import hulk.klog;
 import hulk.console;
+import hulk.time;
 
 struct Pit
 {
@@ -29,8 +30,6 @@ struct Pit
     private enum ubyte MC_RATE_GENERATOR = 0x04u;
     private enum ubyte MC_BINARY = 0x00u;
 
-    private static __gshared ulong milliseconds;
-
     public static void initialize()
     {
         Klog.writefln("\a3Initializing PIT");
@@ -41,6 +40,6 @@ struct Pit
 
     public static void isr()
     {
-        milliseconds++;
+        Time.ms_isr();
     }
 }