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SLEEP (SPC700)
From SnesLab
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 3) | EF | 1 byte | 3 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
SLEEP 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 SLEEP.
No flags are affected.
Syntax
SLEEP
Perhaps SLEEP would have been more useful if the APU supported hardware interrupts.
See Also
References
- Official Super Nintendo development manual on SLEEP: Table C-20 in Appendix C-10 of Book I
- https://problemkaputt.de/fullsnes.htm#snesapuspc700cpujumpcontrolcommands
- Appendix C-1
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L584