1. ECE 3430 – Intro to Microcomputer Systems
ECE 3430 – Introduction to Microcomputer Systems University of Colorado at Colorado Springs
Lecture #8
Agenda Today
Exam #1 Review (questions and answers)
Announcements
Exam #1 – Thursday, 10/1
Open pink book (or printout of pink book)
No notes, laptops, PDAs
Bring calculator and pencil
Multiple choice/fill in the blank
Lecture #8
ECE 3430 – Intro to Microcomputer Systems
Fall 2009

2. ECE 3430 – Intro to Microcomputer Systems
Exam #1 Review
Number Systems
- Base Conversion - Two’s Compliment Negation / Range / Arithmetic / Overflow - BCD - Ways to represent signed numbers in computers.
Computer Hardware (HW) and Software (SW)
- Differences between microprocessors and microcontrollers.
- Definition of a microcomputer.
- Fundamental components of a microcomputer.
- CPU (registers, ALU, control unit). - Types of Memory (RAM, ROM).
- Terminology (cross-assembler, native assembler, machine
code, etc…). - Ways to represent characters in computer memory (ASCII/Unicode).
HC11
- HC11 programming model.
- Basic familiarity with the HC11 block diagram.
- Peripheral Interfacing (active-high and active-low sensor and
actuator interfacing).
Lecture #8
ECE 3430 – Intro to Microcomputer Systems
Fall 2009

3. ECE 3430 – Intro to Microcomputer Systems
Exam #1 Review
HC11 (cont)…
- Definition of opcodes and operands. - IMM, DIR, EXT, IND, INH, REL
- Load and store instructions. - MicroStamp memory map.
- HC11 and MicroStamp port availability and I/O. - Assembler Fields.
- Assembler Directives (ORG, END, RMB, FCB, FDB, FCC, EQU).
- Listing files.
- MicroStamp debugging/utility library (know what it can do for you).
Instruction Execution - Instruction cycle: memory read cycles and memory write cycles. - Program counter’s role in execution. - Instruction execution and timing. - Decoding machine code.
Lecture #8
ECE 3430 – Intro to Microcomputer Systems
Fall 2009

4. ECE 3430 – Intro to Microcomputer Systems
Exam #1 Review
Other - Condition code register flags (what they represent).
- Data direction registers.
- Logical instructions: AND, OR, EOR.
- Arithmetic instructions: ADD, SUB, MUL, IDIV.
Lecture #8
ECE 3430 – Intro to Microcomputer Systems
Fall 2009

5. ECE 3430 – Intro to Microcomputer Systems
Exam #1 Review
Review all presentations on the web and your notes.
Review first three homework exercises.
Questions?
Lecture #8
ECE 3430 – Intro to Microcomputer Systems
Fall 2009