Page 8 - Introduction to Microcontrollers Architecture, Programming, and Interfacing of The Motorola 68HC12
P. 8
Contents
Preface x i
List of Figures xiv
List of Tables xx
Acknowledgments xxi
About the Author xxii
1 Basic Computer Structure and the 6812 1
1.1 Basic Computer Structure 1
1.2 The Instruction 4
1.3 A Few Instructions and Some Simple Programs 8
1.4 MC68HC812A4 and MC68HC912B32 Organizations 16
1.5 Variable Word Width 19
1.6 Summary and Further Reading 21
Problems 23
2 The Instruction Set 27
2.1 Move Instructions 28
2.2 Arithmetic Instructions 34
2.3 Logic Instructions 38
2.4 Edit Instructions 41
2.5 Control instructions 42
2.6 Input-Output Instructions 49
2.7 Special Instructions 49
2.8 Remarks 51
Problems 53
3 Addressing 5 7
3.1 Op Code Byte Addressing Modes 58
.,2 Post-Byte Index Addressing Modes 60
3.3 Relative Addressing and Position Independence 67
3.4 Stack Index Addressing, Reentrancy, and Recursion 71
3.5 Examples 76
3.6 Architectural Notions of Addressing 78
