https://gamesx.com/wiki/doku.php?id=schematics:console_related_schematics
https://arcarc.xmission.com/PDF_Arcade_Manuals_and_Schematics/
https://ballyalley.com/documentation/misc_hardware_docs/Bally/Bally.html
https://gamesx.com/wiki/doku.php?id=schematics:console_related_schematics
http://www.andysarcade.de/gen_unicab.html
https://dragaosemchama.com/en/2015/02/game-boy-advance-service-manual-and-schematics/
https://www.scribd.com/document/352014208/Service-Manual-Game-Gear-VA1-pdf#
https://www.atariasteroids.net/archives/tag/repair-manual
http://blog.beforemario.com/2011/12/nintendo-color-tv-game-15-service.html
https://en.wikipedia.org/wiki/List_of_Sega_arcade_system_boards
https://gbdev.gg8.se/wiki/articles/DMG_Schematics
https://www.hobbyprojects.com/quick_circuits_reference/games_and_fun_stuff_schematics.html?no_redirect=true
