NEOGEO ROM/CD A/V

As usual, the RGB caveats apply. The NEO GEO is nororious for bad RGB and/or composite output. For reference, here's the pinout I use to connect all my systems to my monitors. One single common pinout means I don't need a seperate monitor cable for each system.

Update! [July 1/03] - At the bottom of this page is info regarding different Neo Geo models and the video + RGB output they produce. The quality of your signal is determined by the manufacture date (referenced by serial number). Some models output a very striped RGB signal, some don't. RGB will still look better than composite.

[8-pin DIN MALE]

[8-pin DIN FEMALE]
DIN 8 MALE
(cable end)
DIN 8 FEMALE
(machine port)
Pin Name Description
1 Audio Mono Audio
2 GND Ground
3 VID Composite Video
4 +5v 5 volt out
5 Green Green Video
6 Red Red Video
7 Sync Composite Sync
8 Blue Blue Video

This information was given to me by someone who wished to remain anonymous. There's a lot of secret-keeping and info-hoarding in the Neo Geo fan world, and there are those who wanted this info kept secret to preserve the value of their systems. I prefer to think the truth is more important than petty money grubbing, so here's the info passed to me. I do not guarantee its accuracy, but if I didn't think it was true I wouldn't put it here, right? =)

Serial #VersionRGBCompositeS-Video
1-10,000
1
B
B
Unk
10,001-14,000
2
B
B
Unk
14,001-19,999
3
B
B
Unk
20,000-33,000
4
A
B
Unk
40,000-65,000
5
C
A
C
70,000-150,000
6
C
A
C
200,000-390,000
7
C
A
C

Note: The starting serial # of version 5 is approximate.
Note: "S-Video" refers to the S-Video mod, since the Neo does not output S-Video normally.
Note: Korean Neo Geo systems are Version 7.
Note: Changes to increase composite video quality were apparently made starting with version 5, but the quality levels given above reflect only that division, and may not accurately indicate quality within versions 1-4, and 5-7. The older composite video was apparently less colourful, but slightly clearer. Versions 5-7 increased the vividness of the colour, while introducing some moire patterns (banding).

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