ABSTRACT
The software development process effectively translates the desired task to a cor-
responding explicit set of instructions that can be executed by the processor. The
development of software program would have been straightforward, provided the de-
sired task has been a contiguous sequence of instructions. However, it is highly un-
likely to have such software programs appear in real-life applications. Rather a user
program of moderate complexity will involve decision making, conditional execution,
calling subtasks or functions as well as executing multiple tasks sequentially using
time multiplexing. To handle these complexities associated with the real-life software
programs, the processor architecture supports branch and control instructions. These
instructions allow the software developer to control the flow of program execution at
will.
