please try your luck with v1.1 and let me know if you have any mods to your hardware, or use a datasette.
Thanks. I've just been playing it for a while, and I didn't get a lockup or the shooting problem.
My PET is standard apart from I load from an SD2PET and I added a reset button.
I believe it was the IRQ, which runs behind the scenes. I tried a different approach in this game than I normally do.
