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XCN (SPC700): Difference between revisions
From SnesLab
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|[[Accumulator]] | |[[Accumulator Addressing|Accumulator]] | ||
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!colspan="8"|Flags | !colspan="8"|Flags Affected | ||
|+ | |||
|[[Negative Flag|N]] | |||
|[[Overflow Flag|V]] | |||
|[[Direct Page Flag|P]] | |||
|[[Break Flag|B]] | |||
|[[Half-Carry Flag|H]] | |||
|[[Interrupt Enable Flag|I]] | |||
|[[Zero Flag|Z]] | |||
|[[Carry Flag|C]] | |||
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|N | |N | ||
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'''XCN''' is an [[SPC700]] instruction that swaps the high and low nibbles of the accumulator. | '''XCN''' is an [[SPC700]] instruction that swaps the high and low nibbles of the [[accumulator]]. Bits 0 to 3 become bits 4 to 7 and vice versa. | ||
==== Syntax ==== | |||
<pre> | |||
XCN | |||
XCN A | |||
</pre> | |||
[[File:xcn.png]] | |||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
* Official Nintendo documentation on XCN: Table C-10 in [https://archive.org/details/SNESDevManual/book1/page/n232 Appendix C-7 of Book I] | * Official Nintendo documentation on XCN: Table C-10 in [https://archive.org/details/SNESDevManual/book1/page/n232 Appendix C-7 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L609 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:Shift Rotation Commands]] | [[Category:Shift Rotation Commands]] | ||
Latest revision as of 03:14, 25 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Accumulator | 9F | 1 byte | 5 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| N | . | . | . | . | . | Z | . |
XCN is an SPC700 instruction that swaps the high and low nibbles of the accumulator. Bits 0 to 3 become bits 4 to 7 and vice versa.
Syntax
XCN XCN A
See Also
External Links
- Official Nintendo documentation on XCN: Table C-10 in Appendix C-7 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L609