Example
Here is a simple example of index register use in assembly language pseudo-code that sums a 100 entry array of 4-byte words:
Clear_accumulator Load_index 400,index2 //load 4*array size into index register 2 (index2) loop_start : Add_word_to_accumulator array_start,index2 //Add to AC the word at the address (array_start + index2) Branch_and_decrement_if_index_not_zero loop_start,4,index2 //loop decrementing by 4 until index resister is zeroRead more about this topic: Index Register
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