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Cortex M4 vs Cortex A9

Mohamed Jauhar
Note: This was originally posted on 11th October 2012 at http://forums.arm.com

What are the main difference between these two processors  

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  • 0 Arm Employee Badge
    Note: This was originally posted on 12th October 2012 at http://forums.arm.com

    Probably not out of the box, but with a little effort.

    Yes, the ARM9s (ARMv5E) and Cortex-M4 (ARMv7-M) have support for these instructions.  But...  hand written assembler for an ARM9 is probably written in the ARM instruction set.  The M4 only supports the Thumb instruction set.  Now, ARM and Thumb are quite similar - so porting it should be relatively straight forward.  Hopefully just a bit of tweaking.
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  • 0 Arm Employee Badge
    Note: This was originally posted on 12th October 2012 at http://forums.arm.com

    Probably not out of the box, but with a little effort.

    Yes, the ARM9s (ARMv5E) and Cortex-M4 (ARMv7-M) have support for these instructions.  But...  hand written assembler for an ARM9 is probably written in the ARM instruction set.  The M4 only supports the Thumb instruction set.  Now, ARM and Thumb are quite similar - so porting it should be relatively straight forward.  Hopefully just a bit of tweaking.
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