• Coding Using NEON Technology
    利用NEON技术编写代码 ARM NEON™ technology is widely used for multimedia optimization. The SIMD architecture of NEON technology makes it very suitable for many compute intensive modules in multimedia codecs such...
  • How to enable Neon in cortex A8?
    Hi,       I am using beaglebone which has the processor TI Sitara AM335X. I want to make use of Neon coprcessor for my project, To enable neon, I have to follow these commands. But I can't access these...
  • NEON: Cortex A7 is 4 times slower than Cortex A8 ?
    I'm seeing Cortex-A7 cycle-timing table here : http://hardwarebug.org/2014/05/15/cortex-a7-instruction-cycle-timings/ For example,  VADD.F32 Dd, Dn, Dm takes 2 cycles VADD.F32 Qd, Qn, Qm takes 4 cycles...
  • Cortex-A8: memcpy() into DMA buffer hangs on NEON instructions
    I am cyclically filling the mmap-ed DMA buffer with my data by copying it from "normal" memory in 290 bytes chunks. At the first cycle memcpy always passes OK. At the second cycle it hangs in __memcpy_neon...
  • How does the NEON access Memory?
    Note: This was originally posted on 5th May 2008 at http://forums.arm.com I have a question about how to get the maximum calculation capability of NEON. In our video processing application, we should...