MULSHIFT32 in 14 cycles

I have asked just everyone if their is a fast way to find the top 32-bits of a 32-bit x 32-bit multiply? There were multiply instructions that returned all 64 bits but they take 17 or 18 cycles doing...
MULSHIFT32 in 14 cycles

I have asked just everyone if their is a fast way to find the top 32-bits of a 32-bit x 32-bit multiply? There were multiply instructions that returned all 64 bits but they take 17 or 18 cycles doing...
difference between Cortex-A / A-Profile Cortex-A / A-Profile Cortex-R / R-Profile

What difference between Cortex-A / A-Profile CortexM/ M-Profile Cortex-R / R-Profileis ?
What is differene between cortex A, Cortex M and Cortex R series of ARM?

Hi everyone, I want to start learning microcontrollers and embedded linux? I want to ask what is differene between A, R and M series of ARM microcontroller? Kindly also suggest me a good book to start...
What is differene between cortex A, Cortex M and Cortex R series of ARM?

Hi everyone, I want to start learning microcontrollers and embedded linux? I want to ask what is differene between A, R and M series of ARM microcontroller? Kindly also suggest me a good book to start...