Q.5. (25 points) The microoperations in the fetch cycle are as follows: Fetch cycle MARPC MBR Memory PC PC1 IR MBR TMI instruction subtracts 2 times AC from a memory location: Memory - 2. Memory + 1 SAT instruction has direct addressing mode and its opcode is 10019 Ex: TMI 100H ALU can perform only the following operations clear AC, increment AC, decrement AC, shift right AC, shift left AC, I's complement AC add MBR. 10 AC a. Write the microoperations for the execute cycle of SAT instruction b. For hardwired control load Write the control signals for the microoperations in (a) AC il Draw the circuit to be connected to the load input of AC c. For microprogrammed control, following microoperation codes are given. Write the binary microcode for the execute cycle of TMI instruction. Assume that the starting address of the TMI routine in the control memoryis 01101000, and Fetch routine starts at address 10000000, microinstruction format: F1 F2 Branch code Branch address FI Microoperation address microcode 000 None 01101000 001 AC AC + MBR 01101001 011 MBR AC 01101010 MBR Memory 01101011 101 AC AC + 1 01101100 110 AC shr AC 01101101 ACO 01101110 F2 Microoperation 01101111 None 001 MARIR (addr 010 Memory MBR 011 ACT NBR 100 AC AC-1 110 AC shl AC 111 ACAC Branch code Branch 00 Unconditional branch 01 Branch if ACO Branch if ACCO 11 Mapping 100 000 10