The instructions of a computer are encoded as shown in Figure 5.12. When an Problem 5 immediate value is given in an instruction, it has to be extended to a 32-bit value. Assume that the immediate value is used in three different ways: (a) A 16-bit value is sign-extended for use in arithmetic operations (b) A 16-bit value is padded with zeros to the left for use in logic operations (c) A 26-bit value is padded with 2 zeros to the right and the 4 high-order bits of the PC are appended to the left for use in subroutine-call instructions Show an implementation for the Immediate block in Figure 5.19 that would perform the required extensions The instructions of a computer are encoded as shown in Figure 5.12. When an Problem 5 immediate value is given in an instruction, it has to be extended to a 32-bit value. Assume that the immediate value is used in three different ways: (a) A 16-bit value is sign-extended for use in arithmetic operations (b) A 16-bit value is padded with zeros to the left for use in logic operations (c) A 26-bit value is padded with 2 zeros to the right and the 4 high-order bits of the PC are appended to the left for use in subroutine-call instructions Show an implementation for the Immediate block in Figure 5.19 that would perform the required extensions