Rick Kelly wrote:
| The bottom line, I think, is that every microprocessor has some combination
| of opcodes that will wedge it solid. What is bad is that it is being spread
| across the internet in the case of the pentium.

To add more fuel to the fire: a co-worker told me about this today:

Tell your 68040-based machine to

    unlk a7

and it will never speak to you again (at least until power-cycle).  I tried
it on my HP425T.  Locked solid.

It causes a core dump on an '030.