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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...
| 68k instructions timings | 17:44, 25 November 2018 |
| Battery-backed RAM | 21:50, 12 November 2018 |
| System self-test | 06:23, 8 November 2018 |
How graphics are handled and displayed, from bitplanes and colors to the video output.
| Palettes | 04:46, 12 December 2018 |
| Rendering logic | 22:44, 5 December 2018 |
| Slowdown | 07:17, 24 November 2018 |
Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback...
Troubleshooting dead or glitchy MVS boards, CD laser assemblies, cartridges...
| NEO-257 | 03:40, 28 November 2018 |
| NEO-273 | 03:12, 28 November 2018 |
| Repair help | 07:25, 24 November 2018 |
Particularities of the AES and MVS systems: ROM types, memory cards, cab I/O, data security... Also cartridge boards information.
| PROG board | 20:41, 28 November 2018 |
| SNK history | 02:13, 22 November 2018 |
| MV1-1 | 21:40, 17 November 2018 |
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...
| 68k instructions timings | 17:44, 25 November 2018 |
| Slowdown | 07:17, 24 November 2018 |
| Scaling sprite groups | 08:33, 13 October 2018 |
What makes everything work (or not). Schematics, chip pinouts and functions, troubleshooting hardware issues...
| NEO-244 | 19:49, 2 December 2018 |
| PROG board | 20:41, 28 November 2018 |
| NEO-257 | 03:40, 28 November 2018 |
Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features...
| Fatal Fury 2 | 11:55, 22 October 2018 |
| Robo Army | 15:14, 12 August 2018 |
| 161-in-1 Series 1 | 18:25, 15 July 2018 |
About this wiki
- The wiki has 551 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 ! [Freenode #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 ?
