*[[Media:Texas instruments sn76489an.pdf|Texas Instruments SN76489AN sound chip datasheet]]
*[[Media:Intel 8271 FDC datasheet.pdf|Intel 8271 FDC datasheet]]
*[https://www.stardot.org.uk/forums/ Stardot.org.uk] Acorn computers forum
*[https://chrisacorns.computinghistory.org.uk/Computers/BBCMicros.html Chris's Acorns BBC microcomputers]
*[https://8bs.com/ BBC and Master Computer public domain library]