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WAI: Difference between revisions
From SnesLab
(RDY pin) |
(→See Also: RTI) |
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| Line 38: | Line 38: | ||
=== See Also === | === See Also === | ||
* [[RTI]] | |||
* [[STP]] | * [[STP]] | ||
* [[NOP]] | * [[NOP]] | ||
Revision as of 00:20, 27 November 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 3) | CB | 1 byte | 3 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
WAI (WAit for Interrupt) is a 65x instruction that waits until an interrupt is received. The processor consumes less power while waiting. The RDY pin is pulled low.
See Also
External Links
- Eyes & Lichty page 522, on WAI: https://archive.org/details/0893037893ProgrammingThe65816/page/n548
- Labiak page on WAI: https://archive.org/details/Programming_the_65816/page/n213
- snes9x implementation of WAI: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L3313
- undisbeliever on WAI: https://undisbeliever.net/snesdev/65816-opcodes.html#wai-wait-for-interrupt