• 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...
  • Of exceptions and aborts..
    Note: This was originally posted on 21st January 2009 at http://forums.arm.com The ARM reference manual specifies sometimes MOV PC,R14 and sometimes SUBS PC,R14, #4 for returning from exceptions. But...
  • What is the difference between instruction prefetch and instruction pipelining in arm7tdmi?
    In instruction pipe lining in arm7tdmi the next to next instruction from  the instruction being executed is fetched in to the arm7 and we call it as fetching then what is difference between fetching of...
  • Problem in calling the function in ISR
    Hi, I'm using LPC2148 controller and interfacing accelerometer sensor, I need to enable this sensor all the time and with the counter set in the ISR it should come out of the loop, below is the...
  • Where to find hard core Arm books, courses, tutorials
    My professor hasn't taught us anything in arm assembly. Yet, we have to write a code that involves 2 dimentional arrays. Is there any complete source that I can learn this stuff from it. I understand...