Time manager

[Dave Britten]

I have a slightly personalized version of this on my 41 that I use once in a while. I modified it to use extended memory, but it's nothing too fancy: it just uses SAVERX and GETRX to save/load the whole chunk of registers it uses any time it makes a change, or whenever the program is launched. That way you can start a timer or whatever and run other programs without clobbering anything.