README.md

Objectives of this project are, in no particular order:

* (PETTIL)          make a Forth that runs on my Commodore PET 2001
* (PETTILmob)       find others who are interested in this project
* (PETTILmini)      Raspberry Pi PET emulator with a replica keyboard/case
* (PETTILmobile)    tour the USA in a bus a vintage computer museum
* create YouTube videos
* improve my "6502 Code Golf" skills
* have fun!

PETTIL is my implementation of the Forth programming language, following the FORTH-83 standard.  It has some interesting features.

* PETTIL core
* * Direct-threaded
* * 15 clock cycle NEXT
* * lightweight runtime core, under 6K
* * virtual memory on cassette tape
* * built-in Sweet16
* PETTIL studio
* * interactive developer environment
* * uses Commodore native screen editor
* * interpreter editor compiler assembler
* PERTURB test automation
* Tiddlywiki documentation
* obsessively optimized for speed & space
* integration with Rhialto Seibert's KOSMON
* metacompilation

Target | Machine | Status
------------ | ------------- | ------------
0 | PET #700251 | unstable
1 | PET 3032 (Upgrade) | unstable
2 | PET 4032 (BASIC 4) | unstable
3 | PET 8032 (80-column) | unstable
4 | VIC-20 | unstable
5 | C=64 | pending
6 | C128 native | future
7 | Commodore Plus/4 | future
8 | Apple ][ | future
9 | Atari 800 | future

current toolstack | purpose
------------ | -------------
Ubuntu Linux 18.04.2 LTS | also Ubuntu Studio, Manjaro 
Sublime Text 3 | excellent code editor 
VICE | VersatIle Commodore Emulator 
xa65 | 6502 cross-assembler 
tiddlywiki | for documentation 
git | revision control 
bash make Nodejs awk sed Ruby | unix languages & tools 
kdenlive OBS ffmpeg Shutter Audacity Blender GIMP | multimedia tools 

Link | Purpose
------------ | -------------
http://pettilmobile.com | Project homepage
pettilmobile@gmail.com | Please email ideas and suggestions for the project.
http://pettilmobile.com/files/tiddlypettil.html | PETTIL Documentation
http://pettil.tumblr.com | PETTIL language development
http://twitter.com/pettilmobile |
https://www.facebook.com/chitselb.pettil/ |