I have ported zForth to an even weaker chip, the famous 10c risc-v micro ch32v003 (16k flash, 2k ram) so no issue running on this: https://github.com/BogdanTheGeek/zForth
Maybe, I'm not sure how you would connect a debugger to qemu, and you would have to emulate the ram and flash, but other than that is pretty standard arm cortex m0. The code is pretty generic too.
so I had to throw nginx in front of it so my little router wouldn't explode, but I hope some people will get to experience the relaxing loading experience live.