Using the machine code from Appendix C in your textbook, wri

Using the machine code from Appendix C in your textbook, wri

Using the machine code from Appendix C in your textbook, write the shortest amount of machine code that will switch the upper four bits in the cell AA with the lower four bits in the cell AA. (Example: if AA contained A0 at the start, then when done, AA would contain 0A)