CROSS ASSEMBLER ASM62XX

2 ASM62XX OUTLINE

2.1 Outline

The ASM62XX cross assembler (the ASM62XX in this manual) is an assembler program for generating the machine code used by the S1C62XXX 4-bit, single-chip microcomputers. It can be used under PC-DOS.

The Cross Assembler ASM62XX will assemble the program source files which have been input by the user's editor and will generate an object file in Intel- Hex format and assembly list file.

In this assembler, program modularization has been made possible through macro definition functions and programming independent of the ROM page structure has been made possible through the auto page set function. In addition, consideration has also been given to precise error checks for program capacity (ROM capacity) overflows, undefined codes and the like, and for debugging of such things as label tables for assembly list files and cross reference table supplements.

The program name of the assembler is ASM62XX.EXE.

Figure 2.1.1 shows the ASM62XX execution flow.

A>EDLIN C2XXYYY.DAT

Create the source file

C2XXYYY

.DAT

A>ASM62XX C2XXYYY

Execute the cross assembler

Error

C2XXYYY

C2XXYYYL

C2XXYYYH

message

.PRN

.HEX

.HEX

 

Assembly

Errorlisting file Object file message

Fig. 2.1.1 ASM62XX execution flow

2.2 ASM62XX Input/Output Files

ASM62XX reads a source file, assembles it, and outputs object files and an assembly listing file.

■Source file (C2XXYYY.DAT)

This is a source program file produced using an editor such as EDLIN. The file name format is C2XXYYY, and the file name must not exceed seven characters in length. Character string YYY should be determined by referencing the device name specified by Seiko Epson. The file extension must be added ".DAT".

■Object file (C2XXYYYH.HEX, C2XXYYYL.HEX)

This is an assembled program file in Intel hex format. Because the machine code of the S1C62XXX is 12- bit, the high-order bytes (bits 9 to 12 suffixed by high-order bits 0000B) are output to file C2XXYYYH.HEX, and the low-order bytes (bits 8 to 1) are output to file C2XXYYYL.HEX.

■Assembly listing file (C2XXYYY.PRN)

This is a program listing file generated by adding an operation codes and error messages (if any errors have occurred) to respective source program statements. A cross-reference table is generated at the end of the file, depending on the label table and options. The file name is C2XXYYY.PRN.

See the Appendix for the contents of each file.

III-2

EPSON

S1C62 FAMILY

 

 

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