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".
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".