Astrobe for Cortex-M3

ARM Oberon Development System for Windows
Version 7.2.3 Copyright © 2006-2021 CFB Software

Last Updated 7 Apr 2021


  1. Introduction
  2. System Requirements
  3. List of Files
  4. Installation
  5. Technical Support
  6. Licence Agreement
  7. Ordering Information
  8. Acknowledgements

1. Introduction

Astrobe for Cortex-M3 is a fast and responsive integrated development environment for Windows. It is designed to be used to write software to run on the powerful ARM Cortex-M3 family of microcontrollers.  The programming language supported by Astrobe is Oberon. 

The Oberon Language

Oberon is a general-purpose, procedural programming language. Its type-safety, module consistency-checking and predictable code-generation features facilitate the development of secure and reliable software. Oberon is a refinement of Modula-2 which, in turn, was an improved version of Pascal. Programmers with experience of either of these languages should adapt to Oberon with minimal effort. In additional to the usual range of data types and programming language facilities Oberon features include:

The implementation of Oberon which targets the Cortex-M3 microcontrollers includes additional features particularly designed for efficient code-generation, low-level programming, debugging and access to advanced capabilities of the devices without the need for assembly language or C. 

The standard library modules and linker included with Astrobe support these Cortex-M3 microcontrollers and development boards.

Astrobe Features

Astrobe has the following features:


Language Syntax-oriented Editing 


Professional Edition 

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2. System Requirements

Astrobe is supported on 32-bit or 64-bit Intel versions of Microsoft Windows 10.

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3. List of Files

After running the Astrobe setup installation setup program the following files are created in the program folder that you are asked to specify:

AstrobeM3.exe Main program
AstrobeM3.chm Help file
Oberon.xml Syntax-highlighting schema
Syntax.chm Oberon Quick Reference
OberonReport.pdf Oberon Language Report
OberonGuide.pdf Oberon Programming Guide
OberonCortex-M3.pdf Oberon for Cortex-M3 Microcontrollers
ReadMe.htm This file
UnistallAstrobeM3.exe Uninstall program
UnistallAstrobeM3.log Uninstall support file
Professional Edition only:
AstrobeCompile.exe Command-line compiler
AstrobeLink.exe Command-line linker
AstrobeBuild.exe Command-line builder

The subfolders Configs, Examples and Libs which contain the configuration files, library and example modules are created in the data folder that you are asked to specify. This defaults to DriveLetter:AstrobeM3-v7.2 where DriveLetter: is the name of the drive from which the installation executable is being run.

The examples are described in the AstrobeM3-v7.2\Examples\ReadMe.htm file.

The library modules are described in the Library Modules chapter in the Oberon for Cortex-M3 Microcontrollers document on the Windows Start > Astrobe menu and the Astrobe Help menu.

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4. Installation

Astrobe for Cortex-M3 is distributed as a self-installing file:

Install Astrobe as follows:

  1. Login to your system using an account with Administrator privileges that you will use when running Astrobe.
  2. Exit all Windows programs.
  3. Run the Astrobe setup file e.g. AstrobeM3ProfSetup.exe
  4. Press the Next button, and follow the prompts.
  5. When the installation program has completed, run Astrobe by selecting it from the Windows Start menu.

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5. Technical Support

If you have any technical questions related to Astrobe for Cortex-M3, the Oberon language, or programming Cortex-M3 microcontrollers using Astrobe go to the Astrobe Technical Support webpage for details of how to get support.

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6. License Agreement

You should carefully read the following terms and conditions before using this software. Your use of this software indicates your acceptance of this license agreement and disclaimer.

Starter and Personal Editions

A Starter or Personal Edition of Astrobe for Cortex-M3 may be installed on one or more computers but may only be used by the single person in whose name it is registered. It is licensed for non-commercial / non-profit use only.

Professional Edition

A Professional Edition of Astrobe for Cortex-M3 may be installed on one or more computers but may only be used by the single person in whose name it is registered. It is licensed for commercial use.


Astrobe for Cortex-M3 is used entirely at the risk of the user. Although great care has been taken to eliminate defects during the development of Astrobe for Cortex-M3, it is not claimed to be fault-free. No claims are made regarding its correctness, reliability or fitness for any particular purpose. The Author shall not be liable for errors contained herein or for incidental or consequential damages, loss of data or personal injury in connection with furnishing, performance, or use of this material.

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7. Ordering Information

There are three different editions of Astrobe - Starter, Personal and Professional with different features and benefits to suit different types of users. See the Astrobe for Cortex-M3 Feature Matrix on the Astrobe website.

For details of prices and payment options and to place an order click on Order Astrobe on-line or go to the Astrobe website at:

and then select Order from the menu. Follow the instructions there.

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8. Acknowledgements

I would like to thank Niklaus Wirth for providing the original Oberon source code of the ARM compiler, linker, MAU and FPU libraries that formed the basis of the corresponding components of Astrobe; for his permission to include the Oberon Language Report with distributions of Astrobe and for his valuable support and encouragement during its development.

Chris Burrows
Development Manager
CFB Software

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