Epson S5U1C63000A 4.7 Assembler Pseudo-Instructions

CHAPTER 4: ASSEMBLER

4.7 Assembler Pseudo-Instructions

The assembler pseudo-instructions are not converted to execution codes, but they are designed to control the assembler or to set data.

For discrimination from other instructions, all the assembler pseudo-instructions begin with a character "#" or ".". The instructions that begin with "#" are preprocessed pseudo-instructions and they are expanded into forms that can be assembled. The expanded results are delivered in the preprocessed file (.ms). The original statements of the pseudo-instructions (#) are changed as comments by attaching a ";" before delivering to the file. The instruction that begins with "." are used for section and data definitions. They are not converted at the preprocessing stage.

All the pseudo-instruction characters are not case sensitive.

The following pseudo-instructions are available in the assembler:

Pseudo-instruction		Function
#include	Includes another source.
#define		Defines a constant string.
#defnum		Defines a constant number. (∗ 1)
#macro– #endm	Defines a macro.
#ifdef– #else– #endif		Defines an assemble condition.
#ifndef– #else– #endif	Defines an assemble condition.
.abs	Specifies absolute assembling. (∗ 1)
.align	Sets alignment of a section.
.org		Sets an absolute address.
.code		Declares a CODE section (mapping to the built-in code ROM).
.data		Declares a DATA section (mapping to the built-in data ROM).
.bss		Declares a BSS section (mapping to the built-in RAM).
.codeword	Defines data in the CODE section.
.word		Defines data in the DATA section.
.comm	Secures a global area in the BSS section.
.lcomm		Secures a local area in the BSS section.
.global		Defines an external reference symbol.
.set		Defines an absolute address symbol.
.list	Controls assembly list output.
.nolist	Controls assembly list output.
.stabs		Debugging information (source name).
.stabn	Debugging information (line number).

∗1: Maintained only for compatibility with the older assembler.

S5U1C63000A MANUAL	EPSON	63
(S1C63 FAMILY ASSEMBLER PACKAGE)