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Constraining the Program Counter

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NODE 036a8a3eConstraining the Program Counter ph@netcom.com (Peter Hendrickson)Fri, 22 Nov 1996 14:01:33 -0800 (PST)

You could build a fairly secure system if all of the executable
code were confined to ROMs.

Is there a way to confine the PC of any popular processors so
that it can only execute code in the ROM?

Ideally, it would be possible to do this with cheap off the
shelf hardware.

Peter Hendrickson
ph@netcom.com