• CPSR status back to C variable
    Note: This was originally posted on 17th November 2008 at http://forums.arm.com Im using the TI Code Composer suite with an ARM 7 and Im looking for a way to get the CPSR back into a C variable. I was...
  • Cortex-A8 boot up cpsr status
    Hi, I have a beaglebone black and running a very basic app using starterware. As soon as the app starts executing i copy the CPSR values in memory. The value of CPSR is super surprising 6000019f which...
  • ARM Cortex A8 - if IRQ interrupts are disabled in CPSR register While the processor is executing, system results in data abort. What might be the reason to trigger data abort
    ARM Cortex A8 - if IRQ interrupts are disabled in CPSR register While the processor is executing, system results in data abort. What might be the reason to trigger data abort cpsid i;          // instruction...
  • BCC vs BNE
    To detect negative numbers why do programming use BCC (check carry bit ) instead of BNE ( check N bit , which is obviously more straightforward ) ?
  • updating CPSR in USER UNPRIVILEGED mode
    as we know supervisor mode is priviliged and user is not. at reset time in debugging mode, i read the cpsr it is 0x1d3 means in supervisor mode, so i can change CPSR so i changed it to 0x1d0 which is...