As an aside, I gather than CP/M+ (aka CP/M 3.0) runs quite well on the Spectrum Next and is due to be available on the Spectrum Next Issue 2 (whenever they get hold of the FPGAs the project is hung up on). And the Next looks a whole lot like Loki, except with a gonzo modern FPGA pretending to be a really fast Z80, SD card support, and a Raspberry Pi Zero as a GPU(!). It even costs about the same as an original Spectrum 16K did in 1982, adjusted for 40 years of inflation.
https://www.kickstarter.com/projects/spectrumnext/zx-spectru...