User:Rom1

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.

Recent changes (minor edits hidden)

List of abbreviations:

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25 January 2026

20:21

Replacement chip‎ diffhist +472‎ Furrtek talk contribs (Updated options, reasoning, done/todo)

Categories

File:Ban audio.jpg

Audio system

Everything related to music and sound effects: The Z80 subsystem, synthesized and sampled sound, CDDA playback...

Last edits

NEO-ZMC	15:45, 1 May 2025
ADPCM	15:17, 15 March 2025
CDDA	03:49, 10 February 2025

28 pages

File:Ban tools.jpg

Repairs

Troubleshooting dead or glitchy MVS boards, CD laser assemblies, cartridges...

Last edits

Replacement chip	20:21, 25 January 2026
CD drive	07:36, 1 November 2025
List of ROM chips	00:03, 26 September 2025

45 pages

About this wiki

• The wiki has 579 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]

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 ?