Quiz submission record for quiz5-1-1 at Mon Jul 19 08:39:37 2004: Your Answer for Question 1: If the instruction set is simple and regular, the hardware must deal with fewer 'special' cases, and will therefore be easier to design and run the standard cases faster. Your Answer for Question 2: The RegWrite signal is simply an input for the clock. This ensures that the state of registers is changed when the designer intends for them to be changed. Your Answer for Question 3: The second add unit is to calculate the absolute address of a relative address in a branch or j instruction. The ALU could be used to perform this, but it is busy performing the logic of the branch, so it may be more efficient to simply have an extra adder. Your unique submission ID is quiz5-1-1-cs61c-au-1090251577-2047.