Quiz submission record for quiz6-2-2 at Thu Jul 29 06:53:38 2004: Your Answer for Question 1: EPC register holds the address of the offending instruction. Cause register holds a field that indicates the reason for the exception. Undefined instructions access EPC and Cause Your Answer for Question 2: the way of relaxing the requirement: associating the correct exception with the correct instruction in pinelined computers. Your Answer for Question 3: It causes overhead. Once the OS initiates an operation on the device, it must poll continuously since the OS does not know when the device will actually respond and want to establish a transfer. This causes overhead. Your Answer for Question 4: It means each register appears as a special memory location. Your unique submission ID is quiz6-2-2-cs61c-bx-1091109218-83.