*[[Media:Oric - Service manual.pdf]]
*[[Media:OricAtmosUnofficialULAGuide-1.02.pdf|Oric 1/Atmos Unofficial ULA Guide]] [http://oric.free.fr/HARDWARE/ula.html Web version]
*[https://oric.signal11.org.uk/html/ula-dieshot.htm ULA Decapped!]
*[[Media:R6522 VIA datasheet.pdf|6522 VIA datasheet]]
*[https://forum.defence-force.org Defence Force] [https://ceo.oric.org/community/ Club Europe Oric] Oric forums