MC6809 0.5.0

MC6809 CPU emulator written in Python

MC6809 is a Open source (GPL v3 or later) emulator for the legendary 6809 CPU, used in 30 years old homecomputer Dragon 32 and Tandy TRS-80 Color Computer (CoCo)…

Tested with Python 2.7, 3.4 and PyPy

A example usage can be find in: MC6809/example6809.py

There is a simple benchmark. Run e.g.:

~$ MC6809 benchmark --help

# run benchmark with default settings:
~$ MC6809 benchmark

# run with own settings:
~$ MC6809 benchmark --loops 10 --multiply 20

(MC6809 is the cli installed by setup.py)

~$ cd MC6809
~/MC6809 $ python2 setup.py nosetests
~/MC6809 $ python3 setup.py nosetests

~$ python -m cProfile -s cumulative MC6809 benchmark

History

(Some of the points are related to DragonPy Emulator)

• 19.10.2015 - v0.5.0

  • Split CPU with mixin inheritance

  • Optimizing:

    • remove .get() function calls from registers

    • move Condition Code Register (CC) into CPU via mixin class

  • Bugfix TFR and EXG by convert_differend_width()

  • Run DragonPy unittests on travis CI, too.

• 24.08.2015 - v0.4.6

  • Add a “max_delay”, to fix the “freeze” after a speed limit change

  • rename some of the “speed limit” variables

• 21.08.2015 - v0.4.5

  • deactivate ‘cpu6809_html_debug.py’ - TODO: update it!

  • update cli unittests

  • update README and code cleanup

• 10.08.2015 - v0.4.4 - bugfix and cleanup the tests

• 10.08.2015 - v0.4.3 - run unittests with nose

• 27.05.2015 - v0.4.2 - Add MC6809/example6809.py

• 26.05.2015 - v0.4.0, 0.4.1 - Split MC6809 from DragonPy

• 22.09.2014 - Remove hacked CPU skeleton generator scripts with commit ac903a8f

• 14.09.2014 - Release v0.2.0 - Add a speedlimit, config dialog and IRQ: Forum post 11780

• 05.09.2014 - Release v0.1.0 - Implement pause/resume, hard-/soft-reset 6809 in GUI and improve a little the GUI/Editor stuff: v0.1.0 see also: Forum post 11719.

• 27.08.2014 - Run CoCo with Extended Color Basic v1.1, bugfix transfer BASIC Listing with 8fe24e5…697d39e see: Forum post 11696.

• 20.08.2014 - rudimenary BASIC IDE works with 7e0f16630…ce12148, see also: Forum post 11645.

• 05.08.2014 - Start to support CoCo, too with 0df724b, see also: Forum post 11573.

• 04.08.2014 - Use the origin Pixel-Font with Tkinter GUI, see: Forum post 4909 and Forum post 11570.

• 27.07.2014 - Copyrigth info from Dragon 64 ROM is alive with 543275b, see: Forum post 11524.

• 29.06.2014 - First “HELLO WORLD” works, see: Forum post 11283.

• 27.10.2013 - “sbc09” ROM works wuite well almist, see: Forum post 9752.

• 16.10.2013 - See copyright info from “Simple6809” ROM with 25a97b6 see also: Forum post 9654.

• 10.09.2013 - Start to implement the 6809 CPU with 591d2ed

• 28.08.2013 - Fork “Apple ][ Emulator” written in Python: https://github.com/jtauber/applepy to https://github.com/jedie/DragonPy

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