These implementations are all incomplete in some form. They’re provided as a reference and a starting point for anyone implementing a Bedrock system from scratch.
bedrock-c++
A minimal Bedrock emulator written in C++17. It uses a microcoded processor core, making it small but inefficient. No further work is planned.
bedrock-dos
A miminal Bedrock emulator written in Turbo Pascal version 4. The current version uses a microcoded processor core, which makes it significantly less efficient than it could be, but with the benefit of being more readable. It can load and run a program from the file system, but only implements ports 0x86 and 0x87 for text output.
The plan is to continue developing it as a viable and performant emulator for DOS computers. It’s currently very inefficient, so the best path forward will probably be to switch to a lower level language and to replace the processor core with a hand-optimised implementation.