16. (30 Points) Suppose the following instructions are found at the given locations in memory 20 LDA 50 21 ADD 51 50 724 51 006 550 151 show the contents of IR, PC, MAR, MDR. and A at the conclusion of instruction 21. The register transfer language sequence has been included to help you sequence the events, PC MAR MDR IR IR (address MAR MDR A PC + 1 PC final value of IR = + final value of MAR = final value of MDR and A= final value of PC = IR MAR MDR PC___ 17. (20 Points) What is an important disadvantage of variable length instructions?. 16. (30 Points) Suppose the following instructions are found at the 20 LDA 50 550 21 ADD 51151 wing instructions are found at the given locations in memory 50 724 51 006 Show the contents of IR, PC, MAR, MDR. register transfer language sequence has the conclusion of instruction 21. The Budge sequence has been included to help you sequence the events. PC MAR MDR - IR IR [address] MAR MDR-A PC + 1 PC final value of IR- final value of MAR = final value of MDR and A final value of PC- PC IR MAR MDR