...So you could sync up your other concurrent tasks before accessing system bus
portable68k will no longer be continued as an individual project due to time constraints. This does not mean that there is no further development. I am constantly developing the 68k emulation as part of the project "Denise (C64/Amiga emulator)". The programming is independent of the parent project "Denise" and can be transferred to a completely different project without additional programming effort.
If you are interested in this 68k emulator, I make it available under the MIT license. If another license suits your project better, we can arrange it.