When I'm asking this, I think on microcontrollers, whats the difference between A and M series of ARM processors. Many microcontrollers such as Beagle Bone now have A type of Cortex?
Answer
ARM architecture profiles
The ARM architecture profiles are:
Application profile (Cortex-A)
Application profiles implement a traditional ARM architecture with multiple modes and support a virtual memory system architecture based on an MMU. These profiles support both ARM and Thumb instruction sets.
Real-time profile (Cortex-R)
Real-time profiles implement a traditional ARM architecture with multiple modes and support a protected memory system architecture based on an MPU.
Microcontroller profile (Cortex-M)
Microcontroller profiles implement a programmers' model designed for fast interrupt processing, with hardware stacking of registers and support for writing interrupt handlers in high-level languages. The processor is designed for integration into an FPGA and is ideal for use in very low power applications.
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