• A fairly quick Count Leading Zeroes for Cortex-M0
    The Basics Some of us need to find out how many leading zero-bits there are in a 32-bit word. Such a feature is useful on many occasions, especially when writing a fast divide subroutine. The Cortex...
  • Count the number of trailing zeros without clz?
    I am trying to count the number of trailing zeros in floating points without using the clz command. what would be the easiest way to rewrite this code? ctz         RSB      r1,r0,#0         CMP      r0...
  • Break point at SWI handler
    Hi everyone, I'm using Jlink with openocd to debug ARM926EJ-S and encountered problem when executing SWI command. Even though I don't set a break point at SWI handler but the CPU breaks at SWI handler...
  • ARM9 Frequency scaling
    Hello, I am currently working on a ARM9 based System on Chip. I would like to experiment with Frequency scaling on the CPU, but I have the following issue: The main PLL is used at the same time by an...
  • how to utilize interrupts in arm9 processors..? what is residing inside ISR..?
    how to utilize interrupts in arm9 processors..? what is residing inside ISR..?