Aliasing

Rather the reverse of anonymous labels, aliases are names given to specific memory locations. These make it easier to keep track of important constants or locations. The KERNAL routines are a good example of constants that deserve names. To assign the traditional name chrout to the routine at $FFD2, simply give the directive:

.alias chrout $ffd2

And change the jsr command to:

        jsr chrout

The final version of the code is in hello2.oph. It should assemble to exactly the same program as hello1.oph.