Epson S5U1C63000A - Manual (Page 325)

Assembler as63 (1) Development Tools
Outline
Converts the mnemonic of the source files into object codes (machine
language) of the S1C63000. The results are output in a relocatable object file.
This assembler includes preprocessing functions such as macro definition/call,
conditional assembly, and file-include functions.
Flowchart
Assembler
as63
file.s
Assembly source file
file.o file.ms file.lst
Object file Relocatable
list file
file.err
Error file Preprocessed
source file
to Linker
Start-up Command Usage
Usage: as63 [options]
Options: -d Add preprocess definition
-e Output error log file (.ERR)
-g Add source debug information in object
-l Output relocatable list file (.LST)
-c Ignore character case of symbols
-o Specify output file name
File name: Source file name (.S or .MS)
Pseudo-instructions
#include Inserts other file in the source file.
#define [] Defines a character string with a define name.
#defnum Defines a value with a defnum name.
#macro [par] [,par] ... Defines a statement string with a macro name.
(par: Dummy parameters)
#endm
#ifdef
Conditional assembling
defined: is assembled.
[#else undefined: is assembled.
]
#endif
#ifndef
Conditional assembling
undefined: is assembled.
[#else defined: is assembled.
]
#endif
.code
Declares the start of a CODE section.
.data Declares the start of a DATA section.
.bss Declares the start of a BSS section.
.abs Specifies absolute assembling.
.org Specifies an absolute address.
.align Specifies alignment of a section.
.comm Defines a global symbol and secures memory area in a
bss section.
.lcomm Defines a local symbol and secures memory area in a
bss section.
.set Defines an absolute address for a symbol.
.global Declares the symbol as global.
.codeword [ ... ] Defines codes in the CODE section.
.word [ ... ] Defines data in the DATA section.
.list Turns output ON(.list)/OFF(.nolist) in the assembly list
.nolist file. (Effective only when the -l option is specified)
.stabs "", FileName Outputs source information for debugging.
.stabn 0, FileEnd (Effective only when the -g option is specified)
.stabn , LineInfo