http://learn.cemetech.net/index.php?action=history&feed=atom&title=Z80%3AOpcodes%3AEXXZ80:Opcodes:EXX - Revision history2026-06-03T15:49:19ZRevision history for this page on the wikiMediaWiki 1.43.3http://learn.cemetech.net/index.php?title=Z80:Opcodes:EXX&diff=308&oldid=prevMaintenance script: Initial automated import2016-02-05T22:31:44Z<p>Initial automated import</p>
<p><b>New page</b></p><div><!-- Short summary of instruction --><br />
EXX exchanges BC, DE, and HL with shadow registers with BC', DE', and HL'.<br />
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== Syntax ==<br />
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<!-- Syntax for this instruction --><br />
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exx<br />
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== Effects ==<br />
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<!-- What the instruction does to flags --><br />
All flags preserved.<br />
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== Uses ==<br />
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<!-- What the instruction can be used for --><br />
Most useful in interrupts as an alternative to saving those registers on the stack. If you want to use this command outside an interrupt, make sure interrupts are disabled first.<br />
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== T-States ==<br />
4 t-states<br />
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== See Also ==<br />
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<!-- Other instructions that are related to this one --><br />
[[Z80:Opcodes:DI|DI]],[[Z80:Opcodes:EI|EI]],[[Z80:Opcodes:EX|EX]],[[Z80:Opcodes:HALT|HALT]],[[Z80:Opcodes:IM|IM]],[[Z80:Opcodes:RETI|RETI]],[[Z80:Opcodes:RETN|RETN]]<br />
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{{lowercase}}<br />
[[Category:Z80 Assembly]]<br />
[[Category:Z80 Heaven]]<br />
[[Category:Z80 Opcodes]]</div>Maintenance script