Add the functionality for the SUB_AB instruction described in Example 13.9 to the computer model from XXXXXXXXXXYou will need to create a test program to verify the execution of the instruction. Add...

Add the functionality for the SUB_AB instruction described in Example 13.9 to the computer model from 13.3.4. You will need to create a test program to verify the execution of the instruction. Add the functionality for the AND_AB instruction described in Example 13.9 to the computer model from 13.3.4. You will need to create a test program to verify the execution of the instruction.