The disadvantage of register windowing is
A. high speed
B. puts demands on multiplexers/register ports
C. consumes less cycles
D. doesn’t handle overflow/underflow
Answer:A
The disadvantage of register windowing is
A. high speed B. puts demands on multiplexers/register ports C. consumes less cycles D. doesn’t handle overflow/underflow
Explanation: It is impossible to predict when the register file will overflow or underflow, so performance is unpredictable. It generates a software fault, which the operating system has to handle, consuming more cycles.