What This Document Is
This document represents a class session focused on foundational concepts within an introductory microprocessor course (ECE 2510) at Western Michigan University. Specifically, Session 7 delves into the practical application of assembly language programming for the HCS12 microcontroller. It builds upon previous chapters covering the software development environment and introduces a range of instructions crucial for manipulating data and controlling program flow. The material is designed to bridge the gap between theoretical understanding and hands-on coding.
Why This Document Matters
This session is vital for students learning to program microcontrollers at a low level. It’s particularly beneficial for those needing to understand how software directly interacts with hardware. Students preparing for more advanced coursework in embedded systems, digital logic design, or computer architecture will find this material essential. It’s most useful when actively working through programming assignments and seeking a deeper understanding of the HCS12 instruction set. Those struggling with implementing basic arithmetic, logical operations, or timing control in their microcontroller projects will find this session particularly helpful.
Common Limitations or Challenges
This session focuses on the *concepts* and *syntax* of assembly language instructions. It does *not* provide complete, ready-to-run programs or detailed debugging walkthroughs. It assumes a basic familiarity with number systems (binary, hexadecimal) and fundamental programming principles. The document also doesn’t cover advanced topics like interrupt handling or peripheral interfacing – those are addressed in later sessions. It’s intended as a learning aid, not a substitute for active problem-solving and experimentation.
What This Document Provides
* An overview of the HCS12 assembly language code structure.
* Detailed explanations of instructions for incrementing and decrementing data.
* Coverage of Boolean logic instructions and their applications.
* An introduction to shift and rotate instructions for bit manipulation.
* Descriptions of how these instructions relate to common programming tasks.
* A foundational understanding of how to utilize assembler directives.
* Exploration of multiple-byte and word precision math concepts.
