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Author: Matthias Trute <mtrute@users.sourceforge.net> died 2020-03-25 Maintainer: 2020- Erich Wälde <erwaelde@users.sourceforge.net> Major Contributors: Erich Waelde Michael Kalus Leon Maurer Ullrich Hoffmann Karl Lund Enoch Bradford Rodriguez (MSP430 code from Camelforth 0.5) Matthias Koch (RV32IM + ARM Code from mecrisp) Tristan Williams License: General Public License (GPL) Version 3 from 2007. See the file LICENSE.txt or http://www.gnu.org/licenses/gpl.html. This license applies to all files unless a file has some different attribution in it. AmForth is an interactive Forth for various controllers It does not need additional hard or software. It works completely on the controller (no cross-compiler). AmForth uses the indirect threading forth implementation technique. ATmega: Wordsize is 16bit. The forth dictionary is in the flash memory, new words are compiled directly into flash. Since no (widely available) bootloader supports an API to write to flash, AmForth uses the bootloader space itself. MSP430 Wordsize is 16bit. The Forth dictionary is in the flash or FRAM memory, new words are compiled to it. Use SAVE to keep the code accessible across reboots. The flash devices cannot rewrite the flash cell once a word is written. RV32IM Wordsize is 32bit. Uses a unified memory model. ARM Cortex-M Wordsize is 32bit. Uses a unified memory model AmForth is implemented in assembly and Forth. The code is stable and well tested. The 32bit variante are newer and may have less features. All words have Forth 2012 (CORE and various extenion word sets) stack diagrams, but not necessarily the complete semantics. Some words from the standards are left out, ask for them if you need them. Development hardware are evaluation boards running various Controllers with various external hardware: none, led, push-buttons, SD-card, ethernet controller, RF module etc. Documentation can be found in the doc/ subdirectory and on the homepage http://amforth.sourceforge.net/. Contact, bug reports, questions, wishes etc: mailto:amforth-devel@lists.sourceforge.net
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