Notices

The updated version of the 6809 emulator is hosted at http://6809.ukdragons.org.uk while the original author is uncontactable. If you know the author please get in touch!

The source code for the site is held at github.com, this also includes the site wiki and issue tracking. If you find any problems please visit the issues area and enter any information you can provide on the problem.

Updates

Version 1.1.9
Fixes:

• Updates to remove potential code vulnerabilities

Version 1.1.8
Fixes:

• Updates to remove potential code vulnerabilities

Version 1.1.7
Fixes:

• Fix handling of hexadecimal literal data

Version 1.1.6
Fixes:

• Correct regex declarations

Version 1.1.5
Fixes:

• Update dependencies due to security vulnerabilities

Version 1.1.4
Fixes:

• Code quality improvements to facilitate CI pipeline

Version 1.1.3
Fixes:

• Let disassembler see the list of labels

Version 1.1.2
Fixes:

• Remedy incorrect constant index offset calculation

Version 1.1.1
Fixes:

• Stabilise behaviour in Firefox browser

Version 1.1.0
Fixes:

• String literals can be enclosed in single or double quotes
• Post increment directives in indexed addressing now works in more operations
• 6809 Assembler is now a separate object, decoupled from the emulator
• Assembler now pushes status updates as events instead of writing to the host page

Version 1.0.2
Fixes:

• Build task correctly injects all the scripts into the host html page

Version 1.0.1
Fixes:

• The compiler now makes 3 passes instead of 2 in order to stabilise labels

Known Problems

• Assembler is over-enthusiastic when decoding mnemonics and likes to include labels and data
• Assembler does not know how to handle hints to force 8 bit or 16 bit offsets in indexed addressing