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2 introduction, 1 section definition directives, 2 constant definition directives – Motorola HC12 User Manual

Page 161: 3 data allocation directives, Introduction, Section definition directives, Constant definition directives, Data allocation directives, Section directives, Constant directives

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Assembler Directives

Introduction

MCUez HC12 Assembler

User’s Manual

MOTOROLA

Assembler Directives

161

8.2 Introduction

This chapter introduces assembler directives. Functional descriptions and
examples for each directive are provided. The following tables give an
overview of the different directives.

8.2.1 Section Definition Directives

The directives in

Table 8-1

define new sections.

8.2.2 Constant Definition Directives

The directives in

Table 8-2

define assembly constants.

8.2.3 Data Allocation Directives

The directives in

Table 8-3

allocate variables.

Table 8-1. Section Directives

Directive

Description

ORG

Defines an absolute section

SECTION

Defines a relocatable section

OFFSET

Defines an offset section

Table 8-2. Constant Directives

Directive

Description

EQU

Assigns a name to an expression, cannot be redefined

SET

Assigns a name to an expression, can be redefined

Table 8-3. Data Allocation Directives

Directive

Description

DC

Defines a constant variable

DCB

Defines a constant block

DS

Defines storage for a variable