QUESTION 12:
Say that register $8 contains a bit pattern. OR is performed between it and register $0. Register $9 is to be the destination. What is the effect?
or $9,$8,$0
| 0 NOR 0 = 1 | NOT 0 = 1 | ||
| 1 NOR 0 = 0 | NOT 1 = 0 |
NOT X = X NOR 0
| NOT Operation on Bits | ||||
|---|---|---|---|---|
| first operand | 0 | 1 | ||
| __ | __ | |||
| result | 1 | 0 | ||
The NOT operation is done by using the NOR instruction with $0 as one of the operands:
nor d,s,$0 # $d <-- bitwise NOT of $s.
Say that register $8 contains a bit pattern. OR is performed between it and register $0. Register $9 is to be the destination. What is the effect?
or $9,$8,$0