Browse Prior Art Database

Altering Instruction Execution Without Altering Hardware Or Microcode

IP.com Disclosure Number: IPCOM000068090D
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Nohilly, WJ Shasha, DE [+details]

Abstract

It is sometimes desirable to change the effect of an instruction on the state of the machine without changing hardware. One motivation is that the meaning of an instruction might change after the hardware has been built or the meaning of the instruction might depend on the installation.