Stmicroelectronics S.a.

Sébastien Ferroussat

Andrew Cofler

Xavier Cauchy

Anthony Philippe

Patrice Couvert

Thomas Alofs

Laurent Uguen

Data stored in a first memory are processed by a processing device comprising a processor, a second memory, and an interface device interfacing the processing of data from the first memory. In the interface device, in order to facilitate transfer of data from the first memory where data are stored in a first data format to the second memory where data are stored in a second data format, a first group of data is received from the first memory, with said group ordered into a sequence corresponding to the first data format. Then at least one second group of data is obtained by ordering said data in the first group into a new sequence which is a function of the first and second data formats. The second group of data is stored in the second memory.

Data processing with data transfer between memories

A method of transferring guard values and a computer system, such as a processor for digital signal processing, including a parallel set of execution units that utilizes the method. A master set of guard indicators is held in association with one of the execution units. If other execution units require the guard values for particular guard indicators, a sendguard instruction is issued to the execution unit holding the master guard values. The sendguard instructions are held in a separate queue from the main instructions intended for that execution unit. Circuitry is provided in the execution unit to avoid stalling in the dispatch of sendguard instructions even in the context of earlier guard modifying instructions.

High priority guard transfer for execution control of dependent guarded instructions

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Amberieu en Bugey, France

Sébastien Ferroussat