fullsnes

Fullsnes is a large hardware reference for the SNES created by nocash with several ascii art illustrations.

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

• https://problemkaputt.de/fullsnes.htm

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"