Easy to replicate technique for vectrex32 crash in Demo3d:
Hold Button 3
Hold stick left
The first tie fighter should whizz off to the left and in a matter of a few seconds the vectrex32 will crash (I get ejected from my terminal session), then the vectrex/vectrex32 will reboot with the typical vectrex32 title screen (but interestingly with a highscore of 0 appearing as well), and it functions as normal again.
Hold Button 3
Hold stick left
The first tie fighter should whizz off to the left and in a matter of a few seconds the vectrex32 will crash (I get ejected from my terminal session), then the vectrex/vectrex32 will reboot with the typical vectrex32 title screen (but interestingly with a highscore of 0 appearing as well), and it functions as normal again.