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Appendix B – Addressing Modes

Introduction

Appendix B will describe the data addressing modes on the C28x. Immediate addressing allows

for constant expressions which are especially useful in the initialization process. Indirect

addressing uses auxiliary registers as pointers for accessing organized data in arrays. Direct

addressing is used to access general purpose memory. Techniques for managing data pages,

relevant to direct addressing will be covered as well. Finally, register addressing allows for

interchange between CPU registers.

Learning Objectives

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Explain .sect and .

usect

assembly directives

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Explain assembly addressing modes

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Understand instruction formats

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Describe options for each addressing mode

C28x - Appendix B - Addressing Modes B - 1

Texas Instruments C28 Series Student Guide

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