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BCC: Difference between revisions
From SnesLab
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* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/428 page 428] on BCC | * [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/428 page 428] on BCC | ||
* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n128 page 118] on BCC | * [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n128 page 118] on BCC | ||
* [[MCS6500 Manual]] | * 4.1.2.3 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n55 page 40] on BCC | ||
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n261 page 248] on BCC | * [[Carr]], [https://archive.org/details/6502UsersManual/page/n261 page 248] on BCC | ||
* [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n92 page 3-43] on BCC | * [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n92 page 3-43] on BCC | ||
Revision as of 20:35, 7 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Program Counter Relative | 90 | 2 bytes | 2 cycles* | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
BCC (Branch if Carry Clear) is a 65x instruction that performs a jump if the carry flag is clear. An alternate mnemonic is "BLT."
If carry is set, control simply falls through to the next instruction.
No flags are affected.
Syntax
BCC nearlabel BLT nearlabel
See Also
External Links
- Eyes & Lichty, page 428 on BCC
- Labiak, page 118 on BCC
- 4.1.2.3 on MCS6500 Manual, page 40 on BCC
- Carr, page 248 on BCC
- Leventhal, page 3-43 on BCC
- snes9x implementation of BCC: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1360