Method for writing a program to control processors using any instructions selected from original instructions and defining the instructions used as a new instruction set
AssigneeNokia Mobile Phones Ltd.
InventorsRebecca Gabzdyl, Brian McGovern
Life of this patent
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Abstract
A method for designing a processor. The method utilises the full flexibility of an original instruction set in writing programs for operation of the processor the subset of instruction words used in writing the program are then used in defining the instruction decoder of the processor.
Claims8
A method for producing a processor operable in response to control signals generated by programs composed from instruction words, the processor being capable of performing a set of functions and operable to perform each of the set of functions in response to a respective control word, each control word being correlated with a respective instruction word of an original instruction set, the method comprising the steps of:
- writing a program operable to control the processor using any instructions selected from the original instruction set,
- defining instructions used in the program as a new instruction set such that the new instruction set is a subset of the original instruction set
- renaming the respective new instruction words of the subset, and
- providing means for generating the respective control words correlated with the instruction words of the new subset in response to the corresponding renamed instruction words.
Dependencies are inferred from the claim text.