Patent · US Expired

Correction and modification of microprocessor chip operations

US5542033A · kind A · utility

5Cited by

1References

12Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Son Dao-Trong · Stuttgart, DE
Juergen Haas · Knittlingen, DE
Rolf Mueller · Auburn, US
Guenter Gerwig · Simmozheim, DE

Key dates

Filing date	Sep 22, 1994
Grant date	Jul 30, 1996
Priority date	—
Expiry date	Sep 22, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG06F11/2236
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A correction of microprocessor chip design errors is achieved by identifying selected sets of instructions and/or selected sets of instruction sequences in an erroneous control flow of the microprocessor and/or by identifying selected sets of interface control and status signals. A match selectively initiates a corrective action by interfering with the instruction flow in the microprocessor chip or by requesting external control from an associated processor unit. Alternatively, a match is used for a programmable modification of interface control and status signals to adapt the chip to changes of its environment without redesign.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.