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BCC: Difference between revisions
From SnesLab
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* [[MCS6500 Manual]] page 40 on BCC: https://archive.org/details/mos_microcomputers_programming_manual/page/n55 | * [[MCS6500 Manual]] page 40 on BCC: https://archive.org/details/mos_microcomputers_programming_manual/page/n55 | ||
* [[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]] | * [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n92 page 3-43] on BCC | ||
* snes9x implementation of BCC: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1360 | * snes9x implementation of BCC: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1360 | ||
Revision as of 20:34, 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
- MCS6500 Manual page 40 on BCC: https://archive.org/details/mos_microcomputers_programming_manual/page/n55
- 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