Microprocessor to which additional instructions are added and in

Details Microprocessor to which additional instructions are added and in Microprocessor to which additional instructions are added and in

1996-02-02

1998-04-21

Treat, William M.

G06F 1100

Patent

active

057428018

ABSTRACT:
A microprocessor to which additional instructions from outside of the microprocessor are added and an instructions addition method are provided. The microprocessor includes an unrewritable register and if an instruction decoder in the microprocessor decodes additional instructions which appoint or designate the unrewritable register as a destination register, the additional instructions are added to the microprocessor on the basis of the decoded signals of the additional instructions. The present microprocessor can execute instructions addition while maintaining the compatibility of software for the additional instructions to prepared instructions in the microprocessor.

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patent: 5115500 (1992-05-01), Larsen
patent: 5430862 (1995-07-01), Smith et al.
patent: 5454086 (1995-09-01), Alpert et al.
patent: 5481684 (1996-01-01), Richter et al.

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