Halt and Catch Fire Instruction

Back in the day there were two interesting bugs...

Bug 1 was the Intel F00F instruction which caused the processor to immediately halt.

Bug 2 is that it was possible to create monitor settings which would cause a CRT monitor to catch fire.

So... just for grins... set the monitor to "catch fire" setting and then execute F00F.

A real and practical "halt and catch fire".