Quiz submission record for quiz6-2-2 at Thu Jul 29 10:26:58 2004:

Your Answer for Question 1:
EPC register holds the address if the affected instruction for an exception. This is accessed by all instructions causing exceptions.
Cause register holds the cause of the acception. This is accessed by exceptions that are undefined instructions and arithmetic overflow.

Your Answer for Question 2:
Imprecise exceptions are caused when the exception register doesn't hold the actual address of the exception-causing instruction.

Your Answer for Question 3:
The principal drawback is overhead.

Your Answer for Question 4:
Memory mapped io is where slots of memory are allocated to different devices.

addi $t0,$0,1
loop:
la $t1,0xffff0000
sll $t1,31
srl $t1,31
beq $t1,$t0,loop
la $t2,0xffff0004
sll $t2,24
srl $t2,24
add $v0,$0,$t2
j loop


Your unique submission ID is quiz6-2-2-cs61c-ef-1091122018-1076.