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CLR1 (SPC700): Difference between revisions
From SnesLab
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=== See Also === | === See Also === | ||
* [[SET1]] | * [[SET1]] | ||
* [[TCLR1]] | |||
=== External Links === | === External Links === | ||
Revision as of 06:46, 23 July 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| 12 | 2 bytes | 4 cycles | |||||
| 32 | 2 bytes | 4 cycles | |||||
| 52 | 2 bytes | 4 cycles | |||||
| 72 | 2 bytes | 4 cycles | |||||
| 92 | 2 bytes | 4 cycles | |||||
| B2 | 2 bytes | 4 cycles | |||||
| D2 | 2 bytes | 4 cycles | |||||
| F2 | 2 bytes | 4 cycles | |||||
| Flags Clobbered | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
CLR1 is an SPC700 command that clears a bit in a direct page byte. The byte following the opcode determines which byte. The high nibble of the opcode determines which bit within that byte.
See Also
External Links
- Official Nintendo documentation on CLR1: Appendix C-9 of Book I