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STOP (SPC700)
From SnesLab
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 3) | FF | 1 byte | 3 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
STOP is an SPC700 standby instruction. It hangs the S-SMP until reset. [2] Nintendo does not want you to use this instruction.[3]
EI and DI have no effect on the behavior of STOP.
No flags are affected.
Syntax
STOP
Perhaps STOP would have been more useful if the APU supported hardware interrupts.
See Also
References
- Official Super Nintendo development manual on STOP: Table C-20 in Appendix C-10 of Book I
- https://problemkaputt.de/fullsnes.htm#snesapuspc700cpujumpcontrolcommands
- Summary of SPC700 Commands, Appendix C-1
- anomie: https://github.com/yupferris/TasmShiz/blob/8fabc9764c33a7ae2520a76d80ed7220bb939f12/spc700.txt#L585