Data processing: generic control systems or specific application – Generic control system – apparatus or process – Having preparation of program
Reexamination Certificate
2002-12-12
2008-08-05
Vincent, David (Department: 2121)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Having preparation of program
C712S032000, C712S033000, C712S034000
Reexamination Certificate
active
07409251
ABSTRACT:
The invention describes a method and an arrangement for writing to NV memories in a controller architecture, together with a corresponding computer program product and a corresponding computer-readable storage medium, which may be used in particular to speed up writing or programming processes in NV code memories of microcontrollers, such as for example smart card controllers.The method consists in extending the instruction set of the controller by so-called MOVCWR (move code write) instructions, which make it possible to write a defined data word (byte) to a defined destination address within an NV code memory. The data word (byte) is here written to the correct position of the cache page register of the respective NV memory and the page address pointer register of the memory is updated with the associated page address. If an MMU (memory management unit) is present, this MOVCWR writing to the cache page register takes place, like MOVC reading or code fetch, under the control of this MMU.
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Buhr Wolfgang
Mueller Detlef
Stevens Thomas
Vincent David
Zawilski Peter
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