Formalised clock-rate multiplication within disk drives, discovered that the stepper didn't have ideal behaviour for my timed event loop and hence nailed down the semantics a ilttle more.

(obiter: the 1540 now appears to discern the correct sequence of bits. Framing is off in my test printfs but that's neither here nor there).

Storage/Storage.hpp

@@ -22,6 +22,11 @@ struct Time {
 		length /= common_divisor;
 		clock_rate /= common_divisor;
 	}
+
+	inline float get_float()
+	{
+		return (float)length / (float)clock_rate;
+	}
 };
 
 }