After merging several PR from others and me in upstream BII repo, you can accomplish the following for 24 bit ROM in System 6:
1. Enable emulated hard drive.
2. Enable SDL video
Now you can actually run BII like Mini vMac.
I haven't figured out sound driver yet. So there is still no sound through SDL audio.
But now there is a better debug tool that you can poke around ROM code. You can add break point or load break point from files during guest OS boot and even continue running later on. See details in https://github.com/cebix/macemu/commit/ ... 8d664ec6e3
Here is ROM patching guide I wrote: https://github.com/cebix/macemu/wiki/RO ... n#patching