申論題

6.(6%) Given the block diagrams of a 32-bit ALU, the typical 1-bit ALU, and the 1-bit ALU for the most
significant bit (MSB), determine the values of control and carryin signals to perform each of the following operations:
NOR: Result = (A OR B)'
SUB: Result = A - B
SLT: If A ＜B. Result = 1； else Result = O