[M] Derive the logic expressions to generate the signals PC_select and INC_select shown in Figure 5.20, taking into account the actions needed when executing the following instructions: Branch: All branch instructions, with a 16-bit branch offset given in the instruction Call_register: Asubroutine-call instruction with the subroutine address given in a generalpurpose register Other: All other instructions that do not involve branching

RA Immediate value 4 Branch offset) PC select MuxPC PC enable PC MuxINC INC_select PC-Temp Adder MuxY (Return address) Figure 5.20 Control signals for the instruction address generator. RA Immediate value 4 Branch offset) PC select MuxPC PC enable PC MuxINC INC_select PC-Temp Adder MuxY (Return address) Figure 5.20 Control signals for the instruction address generator