RS232 with a PIC 16F627

Yesterday I wrote some assembly programs to do halfstep, fullstep and wavedrive control of a steppermotor, but the program just ran continuously in 1 direction. That's of course not so cool.

What I want is to tell the PIC how many steps it should make in a certain direction, and then it should do so. This means I need to send commands to it once it's running (i.e. interactively). The most likely way good way to do this, is by using the RS232 functionality (serial line).

Here is some example code on how to use a serial line with a PIC: