Quiz submission record for quiz6-2-2 at Thu Jul 29 10:13:00 2004:

Your Answer for Question 1:
EPC register holds the instruction at which the interupt occured. The cause holds the specific interupt. The mfc0 instruction can access the EPC and Cause.

Your Answer for Question 2:
Imprecise exceptions are exceptions whose cause cannot be precisely determined.

Your Answer for Question 3:
The percentage of the processor time necessary to poll the hard disk is very high.

Your Answer for Question 4:
Memory-mapped io refers to keyboard and display.

              lui  $t0, 0xFFFF
waitloop:     lw   $t1, 0($t0)
              andi $t1, $t1, 0x1
              beq  $t1, $0
              lw   $v0, 4($t0) 


Your unique submission ID is quiz6-2-2-cs61c-ap-1091121180-1541.