Diagnostic memory access

Details Diagnostic memory access Diagnostic memory access

1997-05-13

1998-07-14

Canney, Vincent P.

Excavating

371 223, G06F 1100

Patent

active

057815585

ABSTRACT:
A data processing system has at least one processing module containing one or more blocks of memory, having control registers which are accessible via a diagnostic interface, and a clock module which distributes system clocks to the processing module(s), the operation of which is controllable using a similar diagnostic interface. One of the possible actions in the clock module is the generation of a single-shot clock pulse. A diagnostic control unit is connected to the separate diagnostic interfaces of the processing module(s) and the clock module, and is capable of simultaneously controlling the two diagnostic interfaces in such a way that a single-shot clock pulse can be synchronized with the diagnostic access to a processing module to effect the loading or dumping of a block of memory line by line.

REFERENCES:
patent: 5621651 (1997-04-01), Swoboda
patent: 5708773 (1998-01-01), Jeppesen, III et al.

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