• ARMv7-a MPU/PMSA - Unified Region (Base/Size) question
    Hello, I have been reading and searching for some time and have learned a lot about the MPU on an ARMv7-a. I am attempting to use the Unified Region Base/Size registers to both limit memory access,...
  • armv8-m mpu: how to mark one region with no any access?
    For the ARMv8M mpu, there is only two bits for the AP(access permission), another XN bit for executable. I wan't to mark a region (e.g. from 0~4096) with no any access, mainly used for NULL pointer...
  • Problem: SRAM region is full
    Note: This was originally posted on 12th December 2008 at http://forums.arm.com Hello! I am getting the compiler error that "sram region is full", and I am trying to identify the possible causes. I know...
  • ARM7TDMI: SUBS vs SUB + CMP
    Note: This was originally posted on 2nd April 2009 at http://forums.arm.com Hi, I have a question regarding the SUBS instruction and how it compares to SUB and CMP (due to unexpected behavior in a C-program...