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INX: Difference between revisions
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'''INX''' is a 65x instruction that increments the [[X index register]] by one. The state of the [[decimal flag]] has no effect on the behavior of INX. | '''INX''' is a 65x instruction that increments the [[X index register]] by one. The state of the [[decimal flag]] has no effect on the behavior of INX. Unlike [[ADC]], INX never affects the [[carry flag]]. | ||
==== Syntax ==== | ==== Syntax ==== | ||
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* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/457 page 457] on INX | * [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/457 page 457] on INX | ||
* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n153 page 143] on INX | * [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n153 page 143] on INX | ||
* [[MCS6500 Manual]] | * 7.4 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n115 page 97] on INX | ||
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n273 page 260] on INX | * [[Carr]], [https://archive.org/details/6502UsersManual/page/n273 page 260] on INX | ||
* [[Leventhal]] | * [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n116 page 3-67] on INX | ||
* snes9x implementation of INX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1546 | * snes9x implementation of INX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1546 | ||
* Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.1.1.3 | * Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.1.1.3 | ||
Latest revision as of 20:07, 12 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | E8 | 1 byte | 2 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C |
| N | . | . | . | . | . | Z | . |
INX is a 65x instruction that increments the X index register by one. The state of the decimal flag has no effect on the behavior of INX. Unlike ADC, INX never affects the carry flag.
Syntax
INX
See Also
External Links
- Eyes & Lichty, page 457 on INX
- Labiak, page 143 on INX
- 7.4 on MCS6500 Manual, page 97 on INX
- Carr, page 260 on INX
- Leventhal, page 3-67 on INX
- snes9x implementation of INX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1546
- Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.1.1.3