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AT91 ARM® Thumb® Microcontrollers AT91 Assembler Code Startup Sequence for C Code Applications Software Based on the AT91SAM7S64 Evaluation Board

Part Number: AT91

Abstract:

For reasons of modularity and portability most application code for the AT91SAM7S ARM®-based microcontrollers is written in C. However, the startup sequence required to initialize the ARM Processor Mode and certain key peripherals is heavily dependent on the register architecture and memory mapping processor. For this reason the C- startup sequence is written in assembler.

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