We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
BCS (SPC700): Difference between revisions
From SnesLab
(added syntax) |
(control falls through) |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 36: | Line 36: | ||
|} | |} | ||
'''BCS''' is an [[SPC700]] instruction that performs a branch when the [[carry flag]] is set. | '''BCS''' is an [[SPC700]] instruction that performs a branch when the [[carry flag]] is set. If the carry flag is clear, control simply falls through BCS to the next instruction. | ||
No flags are affected. | No flags are affected. | ||
| Line 44: | Line 44: | ||
BCS rel | BCS rel | ||
</pre> | </pre> | ||
Where rel is a two's complement offset. | |||
=== See Also === | === See Also === | ||
| Line 51: | Line 53: | ||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on BCS: Table C-15, [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I] | * Official Super Nintendo development manual on BCS: Table C-15, [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L359 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 15:26, 14 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Program Counter Relative | B0 | 2 bytes | when condition false: 2 cycles
when condition true: 4 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
BCS is an SPC700 instruction that performs a branch when the carry flag is set. If the carry flag is clear, control simply falls through BCS to the next instruction.
No flags are affected.
Syntax
BCS rel
Where rel is a two's complement offset.
See Also
External Links
- Official Super Nintendo development manual on BCS: Table C-15, Appendix C-8 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L359