#525 VICE jams using attached snap shot on Macintosh

[Tron Thomas]

Steps:
1. Run x64sc on Mac OS X
2. Load the attached snap shot
3. Press the 'L' key on the keyboard

Expected:
An assembly language programming listing should appear on the screen

Actual:
VICE CPU JAM!
Main CPU: JAM at $C0D3

Note:
Neither reset nor hard reset will recover the application. The user has to quit x64sc and restart it.

[Tron Thomas]

Expected behavior may be incorrect. Code may have executed that might very well put the system in to a state where it will JAM. The big issue is that at least on my MacBook Pro, resetting the system does not recover. When the system resets (either normal or hard reset), the normal boot up screen appear and it looks like someone has typed the letter 'L', and then the keyboard is completely unresponsive. It is necessary to shut down the application and restart it to recover.

[gpz]

this one very much looks like a duplicate of bug #516