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Interrupt Request: Difference between revisions

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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, but if it did, [[EI]] and [[DI]] would be useful.


=== See Also ===
=== See Also ===
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* [[SEI]]
* [[SEI]]
* [[CLI]]
* [[CLI]]
* [[BRK]]


=== External Links ===
=== External Links ===

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

  1. snes9x implementation of IRQ: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2588
  2. 65c816 datasheet
  3. https://problemkaputt.de/fullsnes.htm#snesppuinterrupts