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Interrupt Request: Difference between revisions
From SnesLab
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(EI and DI) |
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IRQs can go into the [[Control Deck]] through both the [[Cartridge Slot]] and the [[Expansion Port]]. | IRQs can go into the [[Control Deck]] through both the [[Cartridge Slot]] and the [[Expansion Port]]. | ||
The [[S-SMP]] has no hardware interrupt sources. | The [[S-SMP]] has no hardware interrupt sources, but if it did, [[EI]] and [[DI]] would be useful. | ||
=== See Also === | === See Also === | ||
Latest revision as of 04:56, 22 July 2024
An interrupt request (IRQ) is an interrupt that can be ignored. It has the lowest priority out of all the interrupts. [2]
IRQs can go into the Control Deck through both the Cartridge Slot and the Expansion Port.
The S-SMP has no hardware interrupt sources, but if it did, EI and DI would be useful.
See Also
External Links
- snes9x implementation of IRQ: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2588
- 65c816 datasheet
- https://problemkaputt.de/fullsnes.htm#snesppuinterrupts