Heck, MY computer literally had the infamous "Halt and Catch Fire" instruction: https://en.m.wikipedia.org/wiki/Halt_and_Catch_Fire_(computing) https://en.m.wi

Heck, MY computer literally had the infamous "Halt and Catch Fire" instruction: https://en.m.wikipedia.org/wiki/Halt_and_Catch_Fire_(computing) https://en.m.wikipedia.org/wiki/Halt_and_Catch_Fire_(computi... although by the time I got to computing, the HCF didn't actually cause conflagration. I think I recall a 1960s computer design that would poll a limited set of (magnetic core) memory addresses in its idle loop, which led to overheating in those memory elements. Boot loader for PDP-8? I don't think it was the CDC-6600...