I learned the other day that there is an opcode in the instruction sets of several old processors named HCF. This stands for "Halt, Catch Fire".
It locks the processor from accepting any other instructions, and beginnings toggling the bus lines as rapidly as possible. In some configurations, it's been known to actually burn the lines out and/or set fire to the machine. The only way to stop it is a hard-reboot.
I have no idea why this would ever be included in an instruction set, but it was originally undocumented and later discovered. Thought you guys would find it interesting.
So apparently there is an opcode to set old computers on fire...
Started by stackcollision, Sep 21 2012 09:04 PM
2 replies to this topic