3. Building A Library

As you progress with assembly language programming, you may find that you build up a lot of subroutines in your programs. What to do with them all ?

Why not build yourself a library of routines that you can include in every program that needs them. This way, you have a full set of tried and tested bits of code - which you should document somewhere - that can be reused over and over again. The rest of this article will help you on your way by building a number of useful (well, I have found them to be useful over the years) subroutines that you can use.