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Welcome to the NeoGeo Development Wiki

This wiki is about every technical aspect of the SNK NeoGeo hardware and software (AES, MVS, CD and CDZ).

Its aim is to provide the most detailed, accurate and up to date information, to help homebrew development and repairs.
The wiki has 369 pages. Contributors list.
Don't know where to start ? Try here.

Join us on IRC ! [Freenode #neogeodev]

Categories

Base system What's common to every NeoGeo systems: main architecture, data formats, BIOS functions... Last edits: Pinouts 17:04, 9 May 2012 BIOS 10:24, 6 April 2012 68k initialization 01:37, 6 April 2012 Pages in category: 31	Video system How graphics are handled and displayed, from bitplanes and colors to the video output. Last edits: GPU 10:30, 6 April 2012 Display timing 15:06, 28 March 2012 Software rendering 13:02, 16 December 2011 Pages in category: 17	Audio system Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback... Last edits: ADPCM codecs 14:11, 4 May 2012 YM2610 15:42, 5 March 2012 MAKOTO V3 driver 17:49, 25 December 2011 Pages in category: 14	Electronics What makes everything work (or not), physically. Schematics, chip pinouts and functions, troubleshooting hardware issues... Last edits: NEO-G0 07:28, 10 May 2012 Pinouts 17:04, 9 May 2012 NEO-257 09:46, 9 May 2012 Pages in category: 81
Cart systems Particularities of the AES and MVS systems: ROM types, memory cards, cab I/O, data security... Last edits: NGPC flash board 15:44, 3 May 2012 PROG board 00:58, 29 April 2012 CHA board 07:15, 10 April 2012 Pages in category: 28	CD systems NeoGeo CD and CDZ specificities: Differences and limitations, new memory functions, CDDA... Last edits: Optical pickups 22:41, 26 March 2012 SYS file 18:49, 14 February 2012 IPL file 23:27, 28 October 2011 Pages in category: 25	Code & HowTo's Code snippets, register definitions, guides on how to display stuff, use BIOS functions, play music and sounds, read user input... Last edits: Playing sound samples 14:12, 4 May 2012 Common pitfalls 23:31, 3 May 2012 68k initialization 01:37, 6 April 2012 Pages in category: 38	Tools & Repair Assemblers, emulators, utilities, cheatsheets, automations... Anything handy for developement. Last edits: Links 12:40, 5 April 2012 Error screens 06:17, 13 March 2012 Development tools 01:01, 16 January 2012 Pages in category: 10
Games Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features... Last edits: Ghostlop (prototype) 15:42, 3 May 2012 Samurai Shodown V Special 01:49, 30 April 2012 The King of Fighters 2003 01:49, 30 April 2012 Pages in category: 211

How to edit, guidelines, available templates, suggestions: The wiki

Todo

• See wanted pages, old pages, short pages, and Todo/Mysteries.
• Publish asm highlighter for ConTEXT
• Make subcategories, move/merge "BIOS calls"
• More schematics, chip details/pinouts
• Troubleshooting tips
• Make a downloadable offline capture every few months ?