http://learn.cemetech.net/index.php?action=history&feed=atom&title=Z80%3AOpcodes%3ANOPZ80:Opcodes:NOP - Revision history2026-04-04T13:52:45ZRevision history for this page on the wikiMediaWiki 1.43.3http://learn.cemetech.net/index.php?title=Z80:Opcodes:NOP&diff=279&oldid=prevMaintenance script: Initial automated import2016-02-05T22:10:01Z<p>Initial automated import</p>
<p><b>New page</b></p><div><!-- Short summary of instruction --><br />
NOP does nothing for 4 clock cycles.<br />
<br />
== Syntax ==<br />
<br />
<!-- Syntax for this instruction --><br />
<br />
nop<br />
<br />
== Effects ==<br />
<br />
<!-- What the instruction does to flags --><br />
All flags preserved.<br />
<br />
== Uses ==<br />
<br />
<!-- What the instruction can be used for --><br />
Useful for a short time waster (for example, it's common to put 8 clock cycles between output and input from the Key Port).<br />
<br />
== T-States ==<br />
4 t-states<br />
<br />
== See Also ==<br />
<br />
<!-- Other instructions that are related to this one --><br />
[[Z80:Opcodes:HALT|HALT]]<br />
<br />
{{lowercase}}<br />
[[Category:Z80 Assembly]]<br />
[[Category:Z80 Heaven]]<br />
[[Category:Z80 Opcodes]]</div>Maintenance script