We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

Interrupt Request: Difference between revisions

From SnesLab
Jump to: navigation, search
(added some IRQ sources)
(EI and DI)
 
(8 intermediate revisions by the same user not shown)
Line 1: Line 1:
An '''interrupt request''' (IRQ) is an interrupt that can be ignored.  It has the lowest priority out of all the interrupts. [2]
An '''interrupt request''' (IRQ) is an interrupt that can be ignored.  It has the lowest priority out of all the interrupts. <sup>[2]</sup>


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 ===
* [[NMI]]
* [[NMI]]
* [[IRQ Flag]]
* [[SEI]]
* [[CLI]]
* [[BRK]]


=== External Links ===
=== External Links ===
* snes9x implementation of IRQ: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2588
# snes9x implementation of IRQ: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2588
* [2] 65c816 datasheet
# 65c816 datasheet
* [3] https://problemkaputt.de/fullsnes.htm#snesppuinterrupts
# https://problemkaputt.de/fullsnes.htm#snesppuinterrupts


[[Category:ASM]]
[[Category:ASM]]
[[Category:Official Jargon]]

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