Instruction Sets which are tough to emulate

[Dr.Dimitri Vulis KOTM]

ph at netcom.com (Peter Hendrickson) writes:

> I'm guessing there are a bunch of ways to make a processor hard
> to emulate.
>
> For instance, you can make the registers 65 bits wide.
>
> Can anybody think of some more?

Why would 65 bit registers make the processor hard(er) to emulate?

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Dr.Dimitri Vulis KOTM
Brighton Beach Boardwalk BBS, Forest Hills, N.Y.: +1-718-261-2013, 14.4Kbps