Difference between revisions of "NOP"
(→mention interruptibility as another good reason for NOPping) |
m (Protected "NOP" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))) |
(No difference)
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Latest revision as of 09:01, 4 December 2010
Instruction Name | No Operation |
Mnemonic | NOP |
CP1610 Clock Cycles | 6 |
Interruptible | Yes |
Opcode Range | $0034-$0035 |
The No Operation (NOP) instruction performs no function. Programs use NOPs as a time-killer for synchronization purposes. Programs also use NOPs to break up long sequences of non-interruptible instructions in order to allow the STIC to interrupt the CPU or request the bus. The opcode format is as follows.
0000:0000:0011:010x
where: x is ignored