Panasonic MN1030 user manual Program Format

Chapter 7 Type of Source Statements

7.2Program Format

A program is text created to assemble as machine language instructions in order to operate a micropro- cessor. The assembler translates the text into machine language code, while the linker joins that code to make an executable format file.

One line of text is called a source statement. There are five types of source statements, with the type determining how a source statement is written.

Basic program format is shown below.

* Comment statement		Write comments as needed
#include		#include specifications
#define		Define #define identifiers
definitions of constants, macros, globals		Statements to define constants and macros and to
		declare and define globals
section name	section	Declare start of section
.
.
.
program body		Machine language instructions, conditional assembly
		directives, macro expansions
.
.
.
end		End of program

There are several points to be aware of when writing programs.

•Always declare an attribute and link type for a section name the first time it appears in a file.The same section name cannot be set to a different attribute or link type.

•The effective scope of a directive coding rule section is until the line preceding the next directive coding rule section

•Ignore all text after the directive coding rule instruction.

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