Apparatus and method for real-time program monitoring via a seri

Details Apparatus and method for real-time program monitoring via a seri Apparatus and method for real-time program monitoring via a seri

1996-05-15

1998-03-03

Nguyen, Hoa I.

G01R 3128

Patent

active

057245053

ABSTRACT:
A digital microprocessor having a processor core is provided with trace recording hardware capable of receiving, analyzing and temporarily storing data indicative of program instructions (i.e., instruction types) executed by the processor core and of their respective addresses. The trace recording hardware outputs an abbreviated real-time program trace, containing minimum data necessary to reconstruct a full program trace, via a JTAG port to an external debug host computer where a user may reconstruct the full program trace with reference to a program listing. The abbreviation scheme used by the trace recording hardware is preferably achieved by comparing instruction types received from the processor core to at least one pre-defined instruction type, and abbreviating or discarding the corresponding address information as a function of the particular instruction type. The trace recording hardware may be set into one of two modes by the user. In the first mode, the trace recording hardware stalls the processor core when it reaches its maximum storage capacity for instruction type and/or address data until storage becomes available. In the second mode, when the trace recording hardware becomes full it discards data received from the processor core and stores an overflow indicator. The program trace may be initiated and stopped by the user or by signals internal to the digital microprocessor.

REFERENCES:
patent: 5355369 (1994-10-01), Greenberger et al.
patent: 5386565 (1995-01-01), Tanaka et al.
patent: 5615357 (1997-03-01), Ball

Affiliated with

Also associated with

Rating

Apparatus and method for real-time program monitoring via a seri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for real-time program monitoring via a seri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for real-time program monitoring via a seri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2257250