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fullsnes: Difference between revisions
From SnesLab
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* In https://problemkaputt.de/fullsnes.htm#snescartridgecicnotes, the formula for the [[Polynomial Counter]] is missing an inversion in the second term. | * In https://problemkaputt.de/fullsnes.htm#snescartridgecicnotes, the formula for the [[Polynomial Counter]] is missing an inversion in the second term. | ||
* In https://problemkaputt.de/fullsnes.htm#snesapuspc700ioports, it could be clearer that bits 0-3 of TnOUT are reset to 0 automatically by hardware after reading - it is not the programmer's responsibility to zero them after reading. [1] | * In https://problemkaputt.de/fullsnes.htm#snesapuspc700ioports, it could be clearer that bits 0-3 of TnOUT are reset to 0 automatically by hardware after reading - it is not the programmer's responsibility to zero them after reading. [1] | ||
* In https://problemkaputt.de/fullsnes.htm#snesapudspvolumeregisters, MVOL should stand for "main volume," not "master volume" because MVOL does not control the echo volume, and the offical docs say so. | |||
=== External Links === | === External Links === | ||
Revision as of 10:46, 13 May 2023
Fullsnes is a large hardware reference for the SNES created by nocash.
Errata
- In https://problemkaputt.de/fullsnes.htm#snescartridgecicnotes, the formula for the Polynomial Counter is missing an inversion in the second term.
- In https://problemkaputt.de/fullsnes.htm#snesapuspc700ioports, it could be clearer that bits 0-3 of TnOUT are reset to 0 automatically by hardware after reading - it is not the programmer's responsibility to zero them after reading. [1]
- In https://problemkaputt.de/fullsnes.htm#snesapudspvolumeregisters, MVOL should stand for "main volume," not "master volume" because MVOL does not control the echo volume, and the offical docs say so.
External Links
References
- [1] Page 3-5-2 (NCL PG 11) of Book I of the official Nintendo documentation: "When CN is read, the 4-bit up counter alone is cleared through IC internal timing"