Commodore 64 FORTH: durexforth

durexforth running on VICE Commodore 64 emulator

This will be a short post, since I’ve only been playing around with durexforth for a few minutes so far. But some things I already like about durexforth:

  • Is coded for the great retro Commodore 64 PC
  • Is licensed under a free software license (MIT License)
  • Was pretty easy to build: only dependencies are make, gcc, and the ACME compiler from sourceforge. I used gcc 10.3.0 and the latest ACME SVN checkout (r319) from
  • Implements the words for the 2012 FORTH standard.

As you see in the above screenshot, you can use the % prefix to designate binary input, which is great.

Screenshot from the durexforth tutorial video

Here are the word listings:

Word list page 1

Word list page 2

I’m in the process of installing the texlive Guix package so I can try to build he durexforth PDF documentation and learn more about this FORTH. Some additional gratuitous screenshots of me playing around in durexforth:


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s