Microprocessors: Experiments for the Motorola 6800
By Kerry Urbaniak
Published: 1994
ISBN: 0-8273-5849-0

Table of Contents

Lab 1  - Entering and Executing a Program
Lab 2  - Data Transfer
Lab 3  - Arithmetic Instructions
Lab 4  - Branching Instructions
Lab 5  - Subroutines
Lab 6  - Logic, Shift and Rotate Instructions
Lab 7  - Input/Output Addressing
Lab 8  - I/O Counter
Lab 9  - Interrupts
Lab 10 - Hardware Interrupt 2
Lab 11 - Programming Peripheral Interface (8255)
Lab 12 - Parallel Printer Interface
Lab 13 - Memory Interfacing
Appendix A - 6800 Instruction Set
Appendix B - Adapting to Other Trainers
Appendix C - Datasheets 


Preface

     This lab manual is an introduction to microprocessor programming and 
interfacing. Its purpose is to provide an understanding of general 
microprocessor concepts to someone with no prior microprocessor training or 
knowledge. It is not intended to teach someone everything there is to know 
about the Motorola 6800 Microprocessor.
     The labs are designed to teach concepts common to all microprocessors, 
so the knowledge gained can easily be used to further study, or work with, 
any type of microprocessor. For this reason, only the details of the 
microprocessor necessary to perform the lab and understand the concepts are 
covered.
     The manual is designed to accompany any introductory text on micro-
processors. Since each author covers microprocessor concepts in different 
sequences, the lab and text sequence may not coincide with each other. The 
key terms at the beginning of each lab provide information on the topics 
covered in the lab. These concepts need to be covered prior to performing the 
lab, either by covering the information from the text in use, or by covering 
the discussion material in each lab. The information in the discussion 
section of the labs is sufficient to teach the concepts without the use of a 
separate text, although this information is somewhat narrow in focus.
     The signals used in the interface labs are common to almost any trainer 
using the Motorola 6800 Microprocessor. Very few (if any) modifications are 
needed to run the labs on different trainers. Only the details of the monitor 
program, such as keyboard and display routines, are specific to a particular 
trainer. Appendix B provides information on adapting the labs to specific 
trainers.
     An understanding of digital electronics is necessary to perform the 
labs. This includes gate logic, numbering systems, combinational logic, 
memory circuits, and so on. These concepts should be understood before using 
this lab manual.
     This lab manual uses binary, hexadecimal, and decimal numbering systems. 
All program addresses, op codes, and numbers used in programs are in hex 
form. Decimal numbers used in the manual will be followed by a lower-case "d" 
when the number's form is not obvious.
     The sequence of the labs is designed to build on the information in the 
previous labs. This is especially true with the interface labs, in which the 
circuit from one lab is modified and used in the following lab. For this 
reason, it is suggested that the sequence of the labs not be altered.
     Appendix C contains the pinout and data sheets for the parts used in the 
labs. These are common ICs easily obtained from most electronic component 
retailers.
     If the trainer in use has a tape or disk interface, the use of this to 
save programs should be introduced beginning with Lab 5 or 6. This will save 
considerable time at entering the op codes with the keyboard for subroutines 
used by the labs.
     To users of Gibson's Microprocessor Fundamentals: Concepts and 
Applications: This lab manual was written to follow Gibson's text as closely 
as possible. Some concepts in the lab are covered earlier than they are in 
Gibson's text. This is necessary to provide the information needed to run and 
understand the lab. As with any text, the information can be covered from the 
discussion part of the lab, or by modifying the sequence of the text.
     The labs correspond to Gibson's chapters as follows:

Labs 1 and 2-- Chapter 8
Labs 3 and 4-- Chapter 9
Labs 5 and 6-- Chapter 10
Labs 7 and 8-- Chapter 11
Labs 9 and 10-- Chapter 12
Labs 11, 12, 13-- Chapter 16

     The first seven chapters of this text cover various digital concepts 
that apply to microprocessors. This information should be understood before 
running these labs.