TBH, all I really want (as a daily driver) is a #forth that runs fully hosted on an MCU, tethered by a high speed serial, with an MCU resident block editor (PC/laptop only used for terminal, not editing or source storage).

Yeah, yeah, I have that with my GreenArrays #GA144 developer's board, but I only have one of those and when it eventually dies I can't afford another.

Oh, and I don't want the Forth to be built on top of Arduino or unwieldy development frameworks (e.g. ESP32 and RP2040, etc). This pretty much rules out my own #toolboxforth ...

Maybe I just need to pull out the old Lattice HX8K #fpga dev board and give #swapforth another spin...
@marocddot On the HX8K, you also have the choice of Mecrisp-Quintus (RISC-V) and Mecrisp-Ice (like Swapforth with interrupts and constant folding). Find these on mecrisp.sourceforge.net
@Mecrisp Yes! I have your Mecrisp-Ice loaded up on my Lattice HX8K eval board @48Mhz w/ 460800 baud serial. Looking into implementing PolyFORTH-like block editor words and block storage with it.
@marocddot Glad you like it! Let me know and I add your blocks implementation to the release.