Subject: Re: [stella] Games using unofficial opcodes From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Thu, 2 Jun 2005 15:25:20 -0400 |
Fred Quimby wrote: > Also interesting is some apocryphal talk about opcode $12. I found > references to this jokingly called "HCF" meaning Hold and Catch Fire. > Supposedly this opcode was used for chip testing. The references state that > this halts the machine, and cycles through all addresses $0-$FFFF and > repeats infinitely. But this operation is reportedly very intensive, such > that if it is run like this for a few hours, the chip will supposedly get > hot and possibly start to smoke... I remember similar rumors from that time. E.g. a copy protection which could enable all bits in the memory, causing a "short-circuit" which would break your computer. I am pretty sure those where all myths to prevent ignorant kids from illegally copying software. Didn't work. :-) Have fun! Thomas _______________________________________________________ Thomas Jentzsch | *** Every bit is sacred ! *** tjentzsch at web dot de | Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
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