Main Page

Welcome to the NeoGeo Development Wiki

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

Our aim is to provide the most detailed, accurate and up to date information for preservation, homebrew development and repairs.
The wiki has 469 pages. Contributors list. Hosting provided by ElBarto.
Don't know where to start ? Try here. Can't find what you're looking for ? Try our links.

Want to help ? Just register or join us on IRC ! [Freenode #neogeodev]

Recent changes (minor edits hidden)

No changes during the given period matching these criteria.

Categories

Base system What's common to every NeoGeo system: main architecture, data formats, ... Last edits: Memory speed 17:08, 23 June 2016 Joypad 00:53, 23 June 2016 Reset 20:39, 22 June 2016 Pages in category: 39	Video system How graphics are handled and displayed, from bitplanes and colors to the video output. Last edits: Frame size 01:34, 24 June 2016 Sprite shrinking 22:28, 22 June 2016 Sprites per line limit 21:00, 22 June 2016 Pages in category: 30	Audio system Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback... Last edits: Z80 ERROR 18:03, 26 June 2016 68k/Z80 communication 18:00, 26 June 2016 Boot music 03:11, 29 May 2016 Pages in category: 18	Repairing Troubleshooting dead or glitchy MVS boards, CD laser assemblies, cartridges... Last edits: Z80 ERROR 18:03, 26 June 2016 Memory speed 17:08, 23 June 2016 Click of death 02:10, 4 May 2016 Pages in category: 20
Cart systems Particularities of the AES and MVS systems: ROM types, memory cards, cab I/O, data security... Also cartridge boards information. Last edits: Schematics 00:46, 23 June 2016 Coin counter 03:14, 1 May 2016 Open hardware memory card 13:02, 26 April 2016 Pages in category: 70	CD systems NeoGeo CD and CDZ specificities: Differences and limitations, new memory functions, CDDA... Last edits: CD module 21:29, 2 June 2016 Optical pickups 00:39, 2 June 2016 CDZ 01:49, 18 January 2016 Pages in category: 38	Software Code snippets, register definitions, guides on how to display stuff, use the system ROM, play music and sounds, read user input... Last edits: 68k/Z80 communication 18:00, 26 June 2016 68k ASM defines 16:21, 23 June 2016 Common pitfalls 22:55, 22 June 2016 Pages in category: 51	Electronics What makes everything work (or not). Schematics, chip pinouts and functions, troubleshooting hardware issues... Last edits: Memory speed 17:08, 23 June 2016 NEO-C1 16:16, 23 June 2016 NEO-SDR-T 15:52, 23 June 2016 Pages in category: 102
Games Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features... Last edits: Multicart 08:11, 22 April 2016 League Bowling 06:25, 6 April 2016 Twinkle Star Sprites 02:03, 5 April 2016 Pages in category: 230

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 ?