Question

State one type of instruction that would cause a pipeline system to be reset, explaining why such reset is necessary.

Answer 1

IF Page fault on instruction fetch; misaligned memory 

access; memory-protection violation

ID Undefined or illegal opcode

EX Arithmetic interrupt

MEM Page fault on data fetch; misaligned memory access; memory-protection violation

Load with data page fault, Add with instruction page fault?

Solution 1: interrupt vector/instruction, restart everything incomplete