2:08 PM on wl CMD 0011 = Load AC from 1/0, 0111=store AC to I/O, 0101=Add to AC from Memory In these cases, the 12-bit address identifies a particular 1/0 device. Show the program execution and write the machine instruction code for the following program: (1) Load AC from device 4. (2) Add contents of memory location 140. (3) Store AC to device 7. (5 points) 3. A process references six pages in the following order: A, B, C, A, D, A, B, E, A, B, C, D, E, F. Assume that the replacement algorithm is first-in-first-out and find the number of page transfers during this sequence of references starting with an empty main memory with three page frames. (5 points) (154) * HII