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TSX: Difference between revisions
From SnesLab
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!colspan="9"|Flags | !colspan="9"|Flags Affected | ||
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|[[Negative Flag|N]] | |||
|[[Overflow Flag|V]] | |||
|[[M Flag|M]] | |||
|[[X Flag|X]] | |||
|[[Decimal Flag|D]] | |||
|[[I Flag|I]] | |||
|[[Zero Flag|Z]] | |||
|[[Carry Flag|C]] | |||
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'''TSX''' (Transfer Stack Pointer to X) is a 65x instruction that transfers the value of the [[stack pointer]] to the [[X index register]]. | '''TSX''' (Transfer Stack Pointer to X) is a 65x instruction that transfers the value of the [[stack pointer]] to the [[X index register]]. | ||
* If X is only 8 bits wide then only the low byte of the stack pointer is transferred. | |||
* Otherwise, all 16 bits are transferred. | |||
==== Syntax ==== | |||
<pre> | |||
TSX | |||
</pre> | |||
=== See Also === | === See Also === | ||
* [[TXS]] | * [[TXS]] | ||
* [[TSC]] | |||
=== External Links === | === External Links === | ||
* [[Eyes & Lichty]] | * [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/516 page 516] on TSX | ||
* [[Labiak]] | * [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n207 page 197] on TSX | ||
* [[MCS6500 Manual]] page on TSX | * 8.9 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n141 page 122] on TSX | ||
* [[Carr]] | * [https://archive.org/details/mos_microcomputers_programming_manual/page/n230 B-29], lbid. | ||
* [[Leventhal]] | * [[Carr]], [https://archive.org/details/6502UsersManual/page/n289 page 276] on TSX | ||
* [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n150 page 3-101] on TSX | |||
* snes9x implementation of TSX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2353 | * snes9x implementation of TSX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2353 | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Inherited from 6502]] | [[Category:Inherited from 6502]] | ||
[[Category:Transfer Instructions]] | |||
[[Category:One-byte Instructions]] | |||
[[Category:Implied Instructions]] | |||
[[Category:Two-cycle Instructions]] | |||
Latest revision as of 21:17, 7 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | BA | 1 byte | 2 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| N | . | . | . | . | . | Z | . | |
TSX (Transfer Stack Pointer to X) is a 65x instruction that transfers the value of the stack pointer to the X index register.
- If X is only 8 bits wide then only the low byte of the stack pointer is transferred.
- Otherwise, all 16 bits are transferred.
Syntax
TSX
See Also
External Links
- Eyes & Lichty, page 516 on TSX
- Labiak, page 197 on TSX
- 8.9 on MCS6500 Manual, page 122 on TSX
- B-29, lbid.
- Carr, page 276 on TSX
- Leventhal, page 3-101 on TSX
- snes9x implementation of TSX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2353