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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.
What's common to every NeoGeo system: main architecture, data formats...
| Memory mapped registers | 21:50, 30 June 2021 |
| Pinouts | 15:30, 3 May 2021 |
| Software DIPs | 07:27, 18 January 2021 |
How graphics are handled and displayed, from bitplanes and colors to the video output.
| Eyecatcher | 14:13, 30 May 2020 |
| CXA1145 | 01:13, 24 May 2020 |
| Video DAC | 23:14, 16 May 2020 |
Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback...
| YM2610 timers | 00:37, 8 August 2021 |
| YM2610 registers | 00:34, 8 August 2021 |
| ADPCM | 00:29, 8 August 2021 |
Troubleshooting dead or glitchy MVS boards, CD laser assemblies, cartridges...
| Z80 ERROR | 00:40, 1 June 2021 |
| MVS MV-6 daughter board connectors pinouts | 23:03, 5 May 2021 |
| List of ROM chips | 20:03, 18 March 2021 |
Particularities of the AES and MVS systems: ROM types, memory cards, cab I/O, data security... Also cartridge boards information.
| MVS MV-6 daughter board connectors pinouts | 23:03, 5 May 2021 |
| PROG board | 20:48, 18 March 2021 |
| Cartridge ROM arrangements | 20:40, 18 March 2021 |
NeoGeo CD and CDZ specificities: Differences and limitations, new memory functions, CDDA...
Code snippets, register definitions, guides on how to display stuff, use the system ROM, play music and sounds, read user input...
| YM2610 timers | 00:37, 8 August 2021 |
| YM2610 registers | 00:34, 8 August 2021 |
| Memory mapped registers | 21:50, 30 June 2021 |
What makes everything work (or not). Schematics, chip pinouts and functions, troubleshooting hardware issues...
| Pinouts | 15:30, 3 May 2021 |
| PROG board | 20:48, 18 March 2021 |
| Cartridge ROM arrangements | 20:40, 18 March 2021 |
Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features...
| 161-in-1 Series 1 | 13:15, 12 September 2020 |
| Metal Slug X - Super Vehicle-001 | 20:17, 9 July 2019 |
| Super Sidekicks | 16:17, 10 June 2019 |
About this wiki
- The wiki has 567 pages thanks to our contributors
- 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 ! [Libera.chat #neogeodev]
- 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 ?
