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CLV: Difference between revisions
From SnesLab
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* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/444 page 444] on CLV | * [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/444 page 444] on CLV | ||
* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n143 page 133] on CLV | * [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n143 page 133] on CLV | ||
* [[MCS6500 Manual]] | * 3.6.1 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n43 page 28] on CLV | ||
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n267 page 254] on CLV | * [[Carr]], [https://archive.org/details/6502UsersManual/page/n267 page 254] on CLV | ||
* [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n104 page 3-55] on CLV | * [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n104 page 3-55] on CLV | ||
Revision as of 03:18, 8 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 2) | B8 | 1 byte | 2 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | 0 | . | . | . | . | . | . | |
CLV is a 65x instruction that clears the overflow flag.
Syntax
CLV
Example
Before BRA, this was a common way to always branch on the 6502:
CLV BVC nearlabel
See Also
External Links
- Eyes & Lichty, page 444 on CLV
- Labiak, page 133 on CLV
- 3.6.1 on MCS6500 Manual, page 28 on CLV
- Carr, page 254 on CLV
- Leventhal, page 3-55 on CLV
- snes9x implementation of CLV: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1434