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Chapter4 HCS12 - Chapter 4 Introduction to the Freescale...

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Software and Hardware Engineering: Motorola M68HC12 Copyright © 2000 by Oxford University Press, Inc. Chapter 4 Introduction to the Freescale HCS12 Hardware & Programming Model
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ELEC 2220 Computer Systems “Software and Hardware Engineering: HCS12” Frederick M. Cady Figure 1-1 Basic computer system.
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ELEC 2220 Computer Systems “Software and Hardware Engineering: HCS12” Frederick M. Cady Figure 4.1
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ELEC 2220 Computer Systems “Software and Hardware Engineering: HCS12” Frederick M. Cady HCS12 family components Table 4.1
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ELEC 2220 Computer Systems “Software and Hardware Engineering: HCS12” Frederick M. Cady 68HC12 chip photograph
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ELEC 2220 Computer Systems “Software and Hardware Engineering: HCS12” Frederick M. Cady Programmer’s model of a CPU What information is specified in an “instruction” to accomplish a task? Operations : add, subtract, move, jump Operands : manipulated by operations Data sizes & types: # bits (1, 8, 16, 32, …) signed/unsigned integer, floating-point, character …
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