[stella] Macros to manage memory allocation.

[Dennis Debro]

Hi Lee,

> I think most people use ds statements for allocating RAM, but the macros
> allow you to assign labels for local variables with a bit more context.
> It's not perfect, but I think it's a nice start.  Instead of doing
> something like "myLocalVar equ myGlobalVar" or defining locals up in the
> global var definition space.
>
> So your code can look like: ...

Ah, now I see.

I don't define my locals in the subroutines. I add them to the global var
definitions which might be confusing for someone looking at my source code
:-(

Take care,
Dennis