We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
TXY: Difference between revisions
From SnesLab
(→External Links: Labiak page number) |
(→Syntax: how many bytes in emulation mode) |
||
| (11 intermediate revisions by the same user not shown) | |||
| Line 25: | Line 25: | ||
|[[Carry Flag|C]] | |[[Carry Flag|C]] | ||
|+ | |+ | ||
| | |N | ||
|. | |. | ||
|. | |. | ||
| Line 31: | Line 31: | ||
|. | |. | ||
|. | |. | ||
| | |Z | ||
|. | |. | ||
|} | |} | ||
'''TXY''' is a [[65c816]] instruction that transfers the value of the [[X index register]] to the [[Y index register]]. | '''TXY''' is a [[65c816]] instruction that transfers the value of the [[X index register]] to the [[Y index register]]. TXY always transfers one or two bytes depending on how wide the index registers are. They are both always the same size. | ||
==== Syntax ==== | |||
<pre> | |||
TXY | |||
</pre> | |||
TXY works even in [[emulation mode]] where one byte is always transfered. | |||
=== See Also === | === See Also === | ||
* [[TYX]] | * [[TYX]] | ||
* [[TXA]] | * [[TXA]] | ||
* [[STX]] | |||
* [[TXS]] | |||
=== External Links === | === External Links === | ||
* [[Eyes & Lichty]] | * [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/519 page 519] on TXY | ||
* [[Labiak]] | * [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n210 page 200] on TXY | ||
* snes9x implementation of TXY: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2424 | * snes9x implementation of TXY: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2424 | ||
| Line 50: | Line 59: | ||
[[Category:Transfer Instructions]] | [[Category:Transfer Instructions]] | ||
[[Category:One-byte Instructions]] | [[Category:One-byte Instructions]] | ||
[[Category:Implied Instructions]] | |||
[[Category:Two-cycle Instructions]] | |||
Latest revision as of 15:32, 10 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | 9B | 1 byte | 2 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C |
| N | . | . | . | . | . | Z | . |
TXY is a 65c816 instruction that transfers the value of the X index register to the Y index register. TXY always transfers one or two bytes depending on how wide the index registers are. They are both always the same size.
Syntax
TXY
TXY works even in emulation mode where one byte is always transfered.
See Also
External Links
- Eyes & Lichty, page 519 on TXY
- Labiak, page 200 on TXY
- snes9x implementation of TXY: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2424