Patching apparatus and method for upgrading modem software code

Patching apparatus and method for upgrading modem software code

A software patch method and apparatus using a content addressable memory (CAM) to produce a code change enable signal when a program memory address matches a patch memory address, to cause program execution of modem operation to be diverted to the patch code when an address comparison hit is achieve...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JAFFER, NAVIN, HEDAYAT, SHAHIN, LEINFELDER, KARL THOMAS, GUPTA, SANJAY, SMITH, WESLEY HAMILTON
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A software patch method and apparatus using a content addressable memory (CAM) to produce a code change enable signal when a program memory address matches a patch memory address, to cause program execution of modem operation to be diverted to the patch code when an address comparison hit is achieved. The patching apparatus includes a program memory for applying program instructions onto a data bus for execution, unless an address comparison of a program address and a patch address causes application of a substitute address onto the data bus.