only about 4k – in many variants for different processors, 2 versions documented here.

For the TI MSP430 in a 20 Pin DIP.
Fits perfectly with the MicroBox Hardware.

430eforth-ide - Hex File as well included in the IDE¹⁾, to program via the TI Launchpad
Link to eForth eBook - preview the contents of the book
Link to the Forth eBook series
Lessons - Examples written in eForth 430G2553²⁾
Appendix - All 430eForth Commands on a handy reference card.

The other version documented here is the most open and compact version. And uses as much of it in Forth as possible. The complete file can be found at http://www.exemark.com/FORTH.htm, as item 7.

And there is a related eBook too.

It lead to the idea to see how short such a file would be – not in code, but physical print. And as project this file could be implemented in a Forth as exercise. For this reason you find the \ in front of every line. Implement the relevant function in your prefered system. Tested in A2 and A1 size in the local print shop.

eForth Poster - very good eyes? IF A2 size is sufficient ( 43 x 48 cm) ELSE copy shop as A1 print out THEN.

But you can still do your own printout and if you want, stick them together with some tape.

Link to MicroBox
Link to MMT

More to come³⁾.

Manfred Mahlow gave a lecture on the eForth at the 2017 Forth conference, in which the characteristics of the eForth have been exposed - the video of the lecture is in German, the slides of the lecture are available in German and English.