The Infamous Bit-Of-Confusion

The Infamous Bit-Of-Confusion is scene slang for the unused most significant bit of a 16-bit memory location which is storing a 15-bit value. The term appears to have been introduced by Y0shi circa 1994.^[1] In CGRAM, reading the bit-of-confusion returns PPU2 open bus.

See Also

• List of Y0shi's Docs
• MDR
• S-DSP/Noise
• Addressword
• List of Registers with Unused Bits

Reference

1. Y0shi, SNES.2
2. https://problemkaputt.de/fullsnes.htm#snesppucolorpalettememorycgramanddirectcolors