[lampiaio]

As someone who's been trying to do something VERY similar (port Mac OS 9 to the Nintendo Wii U), all I can say is I'm 1) absolutely impressed, and 2) absolutely encouraged, as my project keeps telling me "this is impossible" at every opportunity.

[itomato]

You are at a slight disadvantage without XNU and Darwin sources, but you can have leaked System 7.1 source, Ghidra and MCP to help make up the difference.

Godspeed.

[blkhp19]

Very cool! I'd love to learn more. That seems extra challenging considering Mac OS 9 is closed source!

[stuaxo]

Nice!

Are there one or two instructions that aren't available ?

I guess it might be possible to trap and emulate those?