3. Design a new (16th) MARIE instruction called CLEARI X that uses indirect addressing to reset (set to zero) the memory location whose address is given in X a) (15 pts) What is the RTN for this instruction and what are the control signals that need to be set for each step? Fill in the table (add/delete rows as necessary) Microoperation Control lines set to 1 c) (10 pts) What changes/additions to the microprogram are needed to implement the instruction? Address MicroOp 1 MicroOp 2 Jump Dest NOP NOP NOP NOP 000OO 0 000o001 0000o010 000011 0000100 0000o00 0000OOO 00000OO 0000o00 0100000 R-MIMAR 0 0 0000101 0o00110 0000111 0001 000 MAR R [ 1 1-0] I IR[15-12 -_ MicrOOP2 [4-11 If IR[15-12 - MicroOOP2 [4-11 If IR [15-12- MicroOOP2 [4-11 If IR[15-12 _ MicrOOP2 [4-11 IE IR[15-12 MicrOOP2 [4-1 0001o 00100 0011O 0100O 0100111 0101010 0101100 0101111 0101 01 0 0101011 0101 100 0101101 0101110 0101111 MAR MBR NOP NOP NOP NOP NOP 0 00000OO M [MAR] MBR 0 00000OO MBR M [ MAR ] AC AC+MBR MARMAR 0 00000OO 0 3. Design a new (16th) MARIE instruction called CLEARI X that uses indirect addressing to reset (set to zero) the memory location whose address is given in X a) (15 pts) What is the RTN for this instruction and what are the control signals that need to be set for each step? Fill in the table (add/delete rows as necessary) Microoperation Control lines set to 1 c) (10 pts) What changes/additions to the microprogram are needed to implement the instruction? Address MicroOp 1 MicroOp 2 Jump Dest NOP NOP NOP NOP 000OO 0 000o001 0000o010 000011 0000100 0000o00 0000OOO 00000OO 0000o00 0100000 R-MIMAR 0 0 0000101 0o00110 0000111 0001 000 MAR R [ 1 1-0] I IR[15-12 -_ MicrOOP2 [4-11 If IR[15-12 - MicroOOP2 [4-11 If IR [15-12- MicroOOP2 [4-11 If IR[15-12 _ MicrOOP2 [4-11 IE IR[15-12 MicrOOP2 [4-1 0001o 00100 0011O 0100O 0100111 0101010 0101100 0101111 0101 01 0 0101011 0101 100 0101101 0101110 0101111 MAR MBR NOP NOP NOP NOP NOP 0 00000OO M [MAR] MBR 0 00000OO MBR M [ MAR ] AC AC+MBR MARMAR 0 00000OO 0