• How to efficiently sum 4 x 8bit integers with ARM or NEON
    Note: This was originally posted on 17th September 2010 at http://forums.arm.com Hi, I am trying to write an ASM function to shrink an 8-bit greyscale image by 4, so I need to get the sum of 4 bytes very...
  • Looking for efficiency
    I am using small memory model and I need to write data to an absolute memory location (0xC002), so I'm using the MVAR macro: #define DISPLAY_DATA MVAR(unsigned char, 0xC002) void main(void) { DISPLAY_DATA...
  • Code efficiancy
    Hi all, My code is based on C and I have a lot of cases where I assign a value to a variable. Is it more efficiency to just place the value or first to check if the variable already has this value? ...
  • efficient packing
    First, I am using 7.5 so it is an old compiler, but that is the way it is. I have a number of bit variables that I am trying to pack into a byte. they are scattered all across the bit area volatile...
  • how to run compile code for NEON
    Note: This was originally posted on 18th December 2009 at http://forums.arm.com Hello everyone, I'm  trying RVDS4.0 evaluation copy and i'm not able to get any option in RVDS that can compile my code...