a. Question 4 An address field in an instruction contains decimal value 14. Where is the corresponding operand located for: (1 mark each) i. Immediate addressing? ii. Indirect addressing? iii. Register addressing? b. Using two's complement representation, describe how you would do the following computations. (6 marks) i. 3410 - 5610 ii. 4510 - 3210 c. List and explain the two types of overflow. (4 marks) Question 5 a. Explain the three common reasons why transfer-of-control operations are required in systems control instructions. (6 marks) b. In this example, there is a main program starting at location 4000. This program includes a call to procedure PROC1, starting at location 4500. When this call instruction is encountered, the processor suspends execution of the main program and begins execution of PROC1 by fetching the next instruction from location 4500. Within PROC1, there are two calls to PROC2 at location 4800. In each case, the execution of PROC1 is suspended and PROC2 is executed. The RETURN statement causes the processor to go back to the calling program and continue execution at the instruction after the corresponding CALL instruction. Use this example to describe how stacks are used to implement nested procedure calls. (6 marks) c. With the aid of an example, explain any three type of instruction