title: Factors in designing Instruction set Arcitecture
body: <p>What are the two majors factors to be considered while designing Instruction Set Architecture ?</p>
  
  <p>I know what ISA is . But What are the factors to be considered? I already reviewed Wikipedia but it doesn't help much.</p>
  
  <p><strong>I found this as design issues for ISA.</strong></p>
  
  <ul>
  <li>Backward Compatibility</li>
  <li>Are interrupts needed?</li>
  </ul>
  
  <p>But are this two factors I am bit confused ! Please help any one ! Preparing For exams of Computer Organization and Architecture </p>