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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 | 04:09, 26 September 2023 |
| 68k | 18:58, 15 July 2023 |
| NGH number | 13:48, 3 July 2023 |
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...
| SLOT6 board | 22:49, 2 October 2022 |
| Repair help | 12:42, 29 May 2022 |
| RAM chip | 11:38, 27 April 2022 |
Particularities of the AES and MVS systems: ROM types, memory cards, cab I/O, data security... Also cartridge boards information.
| Schematics | 23:58, 24 September 2023 |
| ROM-Only boards | 05:03, 6 August 2023 |
| MGD2 | 21:34, 15 July 2023 |
NeoGeo CD and CDZ specificities: Differences and limitations, new memory functions, CDDA...
| Reading CDDA sound levels | 04:14, 26 September 2023 |
| LC98000 | 14:23, 24 January 2021 |
| LC8953 | 14:06, 24 January 2021 |
Code snippets, register definitions, guides on how to display stuff, use the system ROM, play music and sounds, read user input...
| Fading colors | 05:02, 26 September 2023 |
| Reading CDDA sound levels | 04:14, 26 September 2023 |
| Memory mapped registers | 04:09, 26 September 2023 |
What makes everything work (or not). Schematics, chip pinouts and functions, troubleshooting hardware issues...
| Schematics | 23:58, 24 September 2023 |
| NEO-CMC | 18:35, 28 July 2023 |
| 68k | 18:58, 15 July 2023 |
Remarquable games for some of their technical aspects: special effects, unusual hardware use, hidden features...
| Super Bubble Pop | 03:56, 6 April 2023 |
| Puzzle Bobble | 01:55, 6 April 2023 |
| Neo 2048 | 18:17, 11 March 2023 |
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24 September 2023
| 23:58 | Schematics diffhist +52 NFG talk contribs (→AES (home): Added re-draw of page 5 schematic, preserved link to original scan) | ||||
| 23:49 | Upload log NFG talk contribs uploaded File:NeoGeo Z80-RAM-NEO-DO.png (Re-draw of the NEO-D0 (page 5) schematic.) | ||||
About this wiki
- The wiki has 570 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 ?