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TYX: Difference between revisions
From SnesLab
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'''TYX''' is a [[65c816]] instruction that transfers the value of the [[Y index register]] to the [[X index register]]. The x flag determines whether 8 or 16 bits are transferred. | '''TYX''' is a [[65c816]] instruction that transfers the value of the [[Y index register]] to the [[X index register]]. The x flag determines whether 8 or 16 bits are transferred. | ||
The [[negative flag]] will then match the most significant bit of the transferred value. | |||
The [[zero flag]] will indicate whether the transferred value is zero (set if zero). | |||
=== See Also === | === See Also === | ||
Revision as of 22:06, 27 June 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | BB | 1 byte | 2 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C |
| . | . | . | . | . | . | ||
TYX is a 65c816 instruction that transfers the value of the Y index register to the X index register. The x flag determines whether 8 or 16 bits are transferred.
The negative flag will then match the most significant bit of the transferred value. The zero flag will indicate whether the transferred value is zero (set if zero).
See Also
External Links
- Eyes & Lichty page 521, on TYX: https://archive.org/details/0893037893ProgrammingThe65816/page/n547
- Labiak page 202 on TYX: https://archive.org/details/Programming_the_65816/page/n212
- snes9x implementation of TYX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2486