DOS · Free download · Assembly Language
AS09v1.30
is an assembler for the Motorola 6809 and Hitachi 6309 microprocessors.
- Operating system
- DOS
- File size
- 60 KB
- License
- Freeware
- Last updated
- Mar 8, 2025
412 downloads·1148 page views
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Overview
What is AS09?
is an assembler for the Motorola 6809 and Hitachi 6309 microprocessors.
In depth
A closer look at AS09
It reads input from an ASCII text file, assembles this into memory, and then writes a listing and a binary or hex file.
Features of AS09 include: fast two-pass assembly; support for binary, s-records or intel-hex output file formats; optional generation of a debug information file; three segments (code, data, bss) for ROM-based programs; a 'struct' keyword for easy declarations; an instruction cycle count in the listing; full conditional assembly with CPU identifying defines; C-style expressions; support for long file names when running in a Windows DOS box; and full macro capability.
It accepts full 6309 instruction set extensions to the M6809. This can be enabled from the commandline using -x option.
AS09 runs under MS-DOS 3.x+ or compatible systems.
Verdict
Should you download AS09?
AS09 runs on DOS and is available under the Freeware license — the installer is 60 KB. We’ve catalogued it under Assembly Language.
Verified clean. Every AS09 build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance
AS09 specifications
- Category
- Assembly Language
- Publisher
- Frank Vorstenbosch
- Last updated
- Mar 8, 2025
- License
- Freeware
- Operating system
- DOS
- File size
- 60 KB
- Price
- Free
- Page views
- 1148
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