Talk:Errata: Difference between revisions
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NovaSquirrel (talk | contribs) (Created page with "The stuff on this page definitely needs to be double-checked, and ideally tested on a SNES where applicable. These issues don't seem to be documented very well online, and I've had to rely on forum posts and bits of documentation here and there about problems. - ~~~~") |
Rainwarrior (talk | contribs) (→NMI enable mid-vblank: new section) |
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The stuff on this page definitely needs to be double-checked, and ideally tested on a SNES where applicable. These issues don't seem to be documented very well online, and I've had to rely on forum posts and bits of documentation here and there about problems. - [[User:NovaSquirrel|NovaSquirrel]] ([[User talk:NovaSquirrel|talk]]) 05:54, 21 May 2022 (UTC) | The stuff on this page definitely needs to be double-checked, and ideally tested on a SNES where applicable. These issues don't seem to be documented very well online, and I've had to rely on forum posts and bits of documentation here and there about problems. - [[User:NovaSquirrel|NovaSquirrel]] ([[User talk:NovaSquirrel|talk]]) 05:54, 21 May 2022 (UTC) | ||
== NMI enable mid-vblank == | |||
"If NMI is enabled during vblank, NMI will trigger immediately." | |||
It seems this should be easy to mitigate with HVBJOY/$4212. My question is whether reading $4212 flips off the vblank flag like NES $2002, or if instead the correct thing to do is keep reading it until the vblank flag reads clear? - [[User:Rainwarrior|Rainwarrior]] ([[User talk:Rainwarrior|talk]]) 05:24, 22 May 2022 (UTC) | |||
Revision as of 05:24, 22 May 2022
The stuff on this page definitely needs to be double-checked, and ideally tested on a SNES where applicable. These issues don't seem to be documented very well online, and I've had to rely on forum posts and bits of documentation here and there about problems. - NovaSquirrel (talk) 05:54, 21 May 2022 (UTC)
NMI enable mid-vblank
"If NMI is enabled during vblank, NMI will trigger immediately."
It seems this should be easy to mitigate with HVBJOY/$4212. My question is whether reading $4212 flips off the vblank flag like NES $2002, or if instead the correct thing to do is keep reading it until the vblank flag reads clear? - Rainwarrior (talk) 05:24, 22 May 2022 (UTC)
