Date   : Fri, 02 Sep 1994 15:20:00 BST
From   : tim@... (Tim Morley)
Subject: Re: UNDEFINED 6502 OPCODES

dyates@... writes ("Re: UNDEFINED 6502 OPCODES"):
> As I said to him, I've read an article somewhere documenting all
> of the 'undefined' codes, and warning that they didn't work on all
> CPUs - only certain models, or certain batches or something like that.
> 

Or even the one that implemented HCF (Halt and Catch Fire) I believe
it was an early run of 6502s that had an undocumented opcode that
would cause them to basically short circuit the power supply through
the cpu and then catch fire...

8-)))

Tim M