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From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.forth
Subject: Re: New "Forth" MCU Board, ChipStick
Date: Wed, 04 May 2016 22:38:29 -0700
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Raimond Dragomir <raimond.dragomir@gmail.com> writes:
> The chipstick guy is MSP430-based obviously. Personally I would make
> it with a cortex-m0/m3 small chip and a serial flash. It would be a
> 32bit full forth with a file system in serial flash. Probably not $5
> though.

This is expensive ($30) but seems very nice:

  https://www.tindie.com/products/onehorse/dragonfly-stm32l4-breakout-board/

- Teensy sized (0.7" x 1.4" DIP format)
- STM32 80 mhz cpu with 512kB on-chip flash and 128kB sram, single prec. FPU
- 16MB of QSPI flash on board that presents as USB mass storage to PC
   host, so you can drag and drop files to it
- Powered by USB port or lipo, with Feather-like built in charger I think
- Arduino programming environment, could bootstrap Forth from that
- Built in RTC (32khz crystal) with supercapacitor backup
- i/o, analog conversion etc galore
- very low power, similar to Cortex M0 etc.
- various add-on modules planned (tiny solder-on boards).  The guy has
  already made some very cool ones for the Teensy

This seems to solve most of the deficiencies I've seen in comparable
boards.  I'm not too bothered by yet another CPU architecture since the
GCC toolchain supports it.