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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 479 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)

21 September 2016

16:20

(Move log) . . Furrtek (Talk | contribs) moved page HD6301 to HD6301V1 ‎(The "V1" is important: new instructions)

Categories

Base system What's common to every NeoGeo system: main architecture, data formats, ... Last edits: NEO-POWER-0 01:08, 1 September 2016 Power supply 14:48, 30 August 2016 Power requirements 14:28, 30 August 2016 Pages in category: 41	Video system How graphics are handled and displayed, from bitplanes and colors to the video output. Last edits: Palette rotation 15:30, 24 September 2016 Video PLL 07:32, 27 August 2016 Fix bankswitching 23:13, 19 August 2016 Pages in category: 31	Audio system Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback... Last edits: 68k/Z80 communication 17:28, 15 August 2016 Z80 ERROR 18:03, 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: Memory speed 17:22, 15 August 2016 Z80 ERROR 18:03, 26 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: HD6301V1 20:38, 21 September 2016 Multiplayer 15:59, 21 September 2016 Schematics 18:58, 24 August 2016 Pages in category: 72	CD systems NeoGeo CD and CDZ specificities: Differences and limitations, new memory functions, CDDA... Last edits: CDZ 05:17, 16 August 2016 DRAM 00:40, 21 July 2016 CD module 21:29, 2 June 2016 Pages in category: 39	Software Code snippets, register definitions, guides on how to display stuff, use the system ROM, play music and sounds, read user input... Last edits: Palette rotation 15:30, 24 September 2016 Optimization 06:59, 23 September 2016 Homebrew software 18:26, 5 September 2016 Pages in category: 53	Electronics What makes everything work (or not). Schematics, chip pinouts and functions, troubleshooting hardware issues... Last edits: HD6301V1 20:38, 21 September 2016 NEO-SMA 12:43, 30 August 2016 NEO-SUD 12:32, 30 August 2016 Pages in category: 105
Games Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features... Last edits: Double Dragon 01:32, 16 September 2016 Blazing Star 01:31, 16 September 2016 Art of Fighting 01:30, 16 September 2016 Pages in category: 236

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 ?