Todo/Mysteries

Use BR (BIOS RAM) template for bios ram locations. Same for Reg template.

Check Clock distribution diagram, especially on cart edge.

Make helper (tooltip ?) templates for each register.

Memory card stuff (format, banks...)

Add pin numbers on AES cartridge pinout.

Details about Z80 ports ($0C, $C0...) see on first-gen MVS boards for discrete z80 i/o logic, YM2610 write delays.

Official SNK doc infos

 * First 80 bytes of code are switchable through REG_SWPBIOS/REG_SWPROM and switched to the BIOS part on startup ($0~$7F = $C00000~$C0007F)

Registers

 * CD registers

Others

 * CMC fix bankswitching: how/when is vram bank info sent to the cartridge?
 * neo-mga on mv1a + PALs, neo-sdr and neo-dcr info
 * CDDA playback (needs more research in cd bios)
 * neo cd chip pinouts (not very useful)
 * dump lc98000 version neocd bios
 * pro-b0 and pro-c0 pinouts
 * How to start page
 * LC8953/98000 microcode