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DBNZ (SPC700)
From SnesLab
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Direct Page / Program Counter Relative | 6E | 3 bytes | when condition is false: 5 cycles
when condition is true: 7 cycles |
||||
| Implied (type 1) / Program Counter Relative | FE | 2 bytes | when condition is false: 4 cycles
when condition is true: 6 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
DBNZ is an SPC700 instruction that decrements a direct page location or the Y index register and then jumps if that value is nonzero.
See Also
External Links
- Official Super Nintendo development manual on DBNZ: Appendix C-8 of Book I