Assignment One Suppose that the following instuctions are found at the given locations in memory: Address 05 06 07 Instruction LDA 80 SUB 81 HLT 80 81 Data 20 30 Show the content of the PC, MAR, MDR, IR, and the Accumulator (A) as each step of the fetch- execute cycle is performed for the instruction LDA 80 residing at address 05. If the content of the register is unknown, write a question mark"?". PC MAR MDR IR (1) PC-> MAR (2) MDR-IR (3) IR [address] -> MAR (4) MDR-A (5) PC+1-PC