Todo/Mysteries

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Revision as of 21:10, 27 February 2016 by Furrtek (talk | contribs)
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Housekeeping

  • Rename BIOS to system ROM everywhere (done ?)
  • Use Chipname template
  • Use Reg template
  • Use Sig template
  • Use BR (BIOS RAM) template for bios ram locations.
  • Tooltip extension for registers ?
  • Redirects from game stats to game pages
  • Add pin numbers on AES cartridge pinout.
  • How to start page

Useful

Trivia

  • CD-Z copy protection
  • CMC fix bankswitching: how/when is vram bank info sent to the cartridge?
  • Recent security chips info (SMA, PVC...)
  • Neo cd chip pinouts (not very useful)

Analysis / mysteries

  • Why does the L0 ROM need an output buffer ?
  • Can SFIX and the cart's S1 fight on FIXD0~7 on 1-slot boards ? Multi-slots gate FIXD0~7 from cart before SFIX and NEO-B1 bus.
  • Loading time graphs for all CD games, is MESS reliable enough ?
  • ROM data visualisations https://wiki.neogeodev.org/index.php?title=2020_Super_Baseball
  • Details about Z80 ports ($0C, $C0...) see on first-gen MVS boards for discrete z80 i/o logic, YM2610 write delays.
  • Details on CD registers
  • CDDA playback (needs more research in CD bios)
  • Dump LC98000 version Neo CD bios
  • LC8953/98000 microcode

Verify

  • Check Clock distribution diagram, especially on cart edge.