Quiz submission record for quiz6-2-2 at Thu Jul 29 05:28:03 2004:

Your Answer for Question 1:
The value of nextPC-4 (the PC value that caused the exception).

The Cause register holds the type of the exception so that the cpu knows what to do about the exception

Your Answer for Question 2:
An imprecise exception is one where the hardware does not tell the cpu the exact details of the exception, like where it was caused.

Your Answer for Question 3:
Polling can waste a lot of processor time because the processor may need to wait for the I/O.

Your Answer for Question 4:
A memory-mapped io is an I/O whose values correspond to values in memory--in SPIM, each register maps to a memory location

la   $t0, 0xffff0000
lb   $v0, 0($t0)


Your unique submission ID is quiz6-2-2-cs61c-am-1091104083-3022.