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The .cseg directive indicates to the assembler the start of a code section.

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All instructions described following the .cseg directive belong to the code section until it comes across a section definition directives.

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The .cseg directive is used to describe instructions, .db, .dw directives, etc. in the code section defined by the .cseg directive.

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Description of one functional unit such as a subroutine should be defined as a single code section.

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The start address of a code section can be specified with the .org directive.

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A relocation attribute defines a range of location addresses for a code section.

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If there is a label or an instruction to output object code before a section definition directive, a relocatable code section is generated as the default section. The section name here will be ".text", and the relocation attribute will be "TEXT".

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The assembler will output an error if a relocation attribute other than "Table 5.7 Relocation Attributes of .cseg" is specified.

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By describing a section name in the symbol field of the .cseg directive, the code section can be named. If no section name is specified for a code section, the assembler will automatically give a default section name to the code section.
The default section names of the code sections are shown below.

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The following characters are usable in section names.