Neo Geo AES
Sub-pages
Schematics (Neo Geo AES)
📎 NG AES Schematic.pdf (file unavailable) 📎 NeoGeo-1-Slot-Service-Manual-MV-1.pdf (file unavailable) 📎 NeoGeo-1-Slot-...
AV Pinout (Neo Geo AES)
The Neo Geo AES has the exact same pinout as the Master System 1 and Mega Drive / Genesis 1, but the top left and right ...
Initial Power Up (Neo Geo AES)
One of the main issues with Neo Geo AES is their power rails. The first version of the PCBs had no voltage regulation wh...
Reset Boot Test (Neo Geo AES)
The next step after confirming your power rails are good is to test if you are getting basic video out. The best test fo...
Graphics Rendering (Neo Geo AES)
When you get issues with the Neo Geo not rendering correctly it is good to know how the screen generally renders. The Ne...
LSPC Line Sprite Processor (Neo Geo AES)
The LSPC, know as the Line Sprite Controller, is responsible for generating the signals required to output video signals...
Graphics Processor (Neo Geo AES)
The NEO-B1 is the graphics processor chip, and it receives line sprite information from the LSPC, as well as communicate...
Audio Circuit (Neo Geo AES)
The Neo Geo AES has a fairly complex audio circuit worth exploring. The audio is generated from several places: The Game...
Diagnostic BIOS (Neo Geo AES)
A very useful way to test the Neo Geo AES is to replace the BIOS with a socket, and then drop in the Diagnostic BIOS. Th...
Chroma Clock Generator (Neo Geo AES)
The chroma clock is a self-oscillating circuit using a Hex Inverter 74HC04. The clock circuit has the load capacitors, a...
System Clocks (Neo Geo AES)
The NEO-D0 is responsible for generating all system clocks. Firstly the 24MHz clock passes through a Hex Inverter, with ...
CXA Video Encoder (Neo Geo AES)
The video encoding for generating composite and RGB video data from the LSPC chip is the CXA1145 video encoder. The CXA1...
Card Interface (Neo Geo AES)
TODO
Memory Card (Neo Geo AES)
A memory card on the Neo Geo is used to save high scores, game progress, and store/load game saves. You insert the memor...
CleanRGB Install (Neo Geo AES)
The Neo Geo AES consoles already have RGB to their output ports, ready for use with CleanRGB cables. You can go ahead an...
RGB CSYNC Mod (Neo Geo AES)
Some revisions such as the 3-5 and 3.6 have composite wired to the CSYNC pin for RGB output. An easy test is use your m...
RGB Voltage Levels (Neo Geo AES)
Every revision of Neo Geo AES is different, and there are many revisions. The output voltage levels of the RGB and CSYNC...
RGB CleanRGB Results (Neo Geo AES)
The work involved in the RGB Mods section, as well as others, with the goal to fully correct and clean the RGB signals o...
Jailbar Fix (Neo Geo AES)
Some models of Neo Geo AES, such as the infamous 3-6 variant, suffer from Jailbars. See the fix on my YouTube channel h...
Checkerboard Fix (Neo Geo AES)
Some variants of the Neo Geo AES such as the 3-6 have a checkerboard pattern over the image. This is due to the fact the...
Ghosting Fix (Neo Geo AES)
Some models have blurry pixels and ghosting (faded versions of the pixels on the left, showing on the right) almost like...
UniBIOS (Neo Geo AES)
The UniBIOS is an enhanced version of the official Neo Geo AES BIOS. The UNIVERSE BIOS is for owners of MVS or AES har...
Diagnostics BIOS (Neo Geo AES)
The Diagnostics BIOS was originally made by smkdan . Simply replace the real BIOS with this diagnostics BIOS to give mo...
Visual Diagnostics (Neo Geo AES)
The default BIOS of the Neo Geo AES has some built in basic diagnostics. Turn on the console, without a game , and if...
CleanPower USB-C (Neo Geo AES)
The Neo Geo AES has a mixture of 5V and 9V variant power inputs. This is dangerous as it can lead to blowing up your AES...
CleanLight RGB (Neo Geo AES)
The Neo Geo AES has a semi-transparent clear black reset button that is perfect for putting some LEDs inside. The CleanL...