Method for retrieving reset vector after reset

A data processing system (400) is configured when coming out of reset using memories of various bit widths (440, 450, 460). The bytes that make up the reset vector (300) are fetched individually through separate memory operations from the memory that stores the reset vector. These bytes are stored i...

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Bibliographic Details
Main Author WILLIAM C. MOYER,MICHAEL D. FITZSIMONS,JAMES C. NASH
Format Patent
LanguageEnglish
Published 01.03.2006
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A data processing system (400) is configured when coming out of reset using memories of various bit widths (440, 450, 460). The bytes that make up the reset vector (300) are fetched individually through separate memory operations from the memory that stores the reset vector. These bytes are stored in a pre-determined manner within each of the potential memory structures (440, 450, 460) such that predetermined addresses will retrieve the different bytes on the same portion of the data bus. A configuration value (310) portion of the reset vector (300) retrieved may be used to configure various parameters (352-356, 362) within the data processing system (400) such that parameters related to the memory or other functional characteristics of the system are initialized. The configuration value (310) may include data and control sections such that the control section determines how the data section of the configuration value (310) is applied to various parameters within the data processing system (400).
Bibliography:Application Number: CN20001030960