Computer, non-maskable interrupt trace routine override

Details Computer, non-maskable interrupt trace routine override Computer, non-maskable interrupt trace routine override

1992-01-28

1994-04-26

Beausoliel, Jr., Robert W.

395500, G06F 1108

Patent

active

053074823

ABSTRACT:
System non-maskable interrupts are detected by an override controller which initiates an NMI routine override operation. During override, address requests for an standard NMI routine are intercepted, and instead a predetermined memory space is addressed that contains a system specific NMI trace routine. The processor is unaware that the override controller has inserted the system specific NMI routines. The processor executes the system specific NMI routines, and when the specific routines are completed, the override controller generates a termination signal which returns program control back to the standard NMI routine. The system specific NMI routine is designed to trace errors created by new system functions or hardware or to enhance the error tracing capability for existing system functions.

REFERENCES:
patent: 4334307 (1982-06-01), Bourgeois et al.
patent: 4423508 (1983-12-01), Shiozaki et al.
patent: 4489380 (1984-12-01), Carey et al.
patent: 4593391 (1986-06-01), Mizushima et al.
patent: 4695946 (1987-09-01), Andreasen et al.
patent: 4701845 (1987-10-01), Andreasen et al.
patent: 4726024 (1988-02-01), Guziak et al.
patent: 4799145 (1989-01-01), Goss et al.
patent: 4819159 (1989-04-01), Shipley et al.
patent: 4833594 (1989-05-01), Familetti et al.
patent: 4862349 (1989-08-01), Foreman et al.
patent: 4890284 (1989-12-01), Murphy et al.
patent: 5012409 (1991-05-01), Fletcher et al.
patent: 5138706 (1992-08-01), Melo et al.
patent: 5155838 (1992-10-01), Kishi
patent: 5179690 (1993-01-01), Ishikawa
IBM Technical Disclosure Bulletin, vol. 30, No. 5, Oct. 1987, "Diagnostic Status for Non-Maskable Interrupt Arbitration", pp. 67-68.
IBM Technical Disclosure Bulletin, vol. 32, No. 5A, Oct. 1989, "Enhanced Hardware Error Recovery for Microprocessor", pp. 441-442.

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