Steps to reproduce:

1. Get a working OS9.
2. Download https://archive.org/download/heroes_3_complete_demo/heroes_3_complete_demo.sit
3. Install.
4. Run.
5. Click either "new game" or "quit". It will get the same result.

SheepShaver hangs with the following message spamming the logs:

Illegal instruction at 5046d304, opcode = 0f040000

This is happening in SheepShaver 2.5 from Korkman/macemu-appimage-builder@1f0b700