Hi, On 24/01/2011 16:57, Thomas Petazzoni wrote: > For example, some video decoders have specific code to use NEON > instructions, but those instructions are not available on Cortex-A8 > cores for example. > NEON (and VFP) is a feature of cortex A8 : http://www.arm.com/products/processors/cortex-a/cortex-a8.php It's optional on A5 & A9 but not on A8. Eric