3. (40 pts) For the simple computer developed in class, the register transfers for 3 basic instructions were given. Suppose the memory is increased to 64K bytes so that 16 address bits are needed. Instructions are now 2-word (ie., 32-bit) long each. The first word is the opcode and the second is the address. For each case below, show the state number, register transfer, and the next state. (The control lines activated need not be shown.) Remember that only one word (16 bits) can be read from memory at a time. All the registers are now one-word 6-bit) long. a. Write the microinstructions for the fetch phase. Note that the address word of an