Ques.5: Your task is to consider the successor to the LC-3. We will add ten additional opcodes to the ISA, and expand the register set from 8 to 16. We will change the memory to byte-addressible, with total address space of 64K bytes. Instructions will remain 16 bits wide. Also, we will encode all instructions, both old and new, with the same fields as the original 15 instructions, although we may need to change the size of some of the fields. a) Is there any problem completing the detailed specification of the successor to the LC- 3, as described above? Explain. b) How many bits do we need in the PC to be able to address all of memory? c) If, we consider a different new version of the LC-3in which we reduced the number of registers from eight to four and kept the number of opcodes at 16, what is the largest immediate value we could represent in an ADD instruction on this new machine? Q1 1 point