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STOP (SPC700)

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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

  1. Official Super Nintendo development manual on STOP: Table C-20 in Appendix C-10 of Book I
  2. https://problemkaputt.de/fullsnes.htm#snesapuspc700cpujumpcontrolcommands
  3. Summary of SPC700 Commands, Appendix C-1
  4. anomie: https://github.com/yupferris/TasmShiz/blob/8fabc9764c33a7ae2520a76d80ed7220bb939f12/spc700.txt#L585