* [[Media:MC 6850.pdf|Datasheet for MC6850]] (pdf)
* [[Media:A6850.pdf|Datasheet for ACIA 6850]] (pdf)
* [[Media:1983 Ferranti Data Converters.pdf|Datasheet for Ferranti Data Converters]] (pdf)
* [[Media:ZN448.pdf|Datasheet for Ferranti ZN448/ZN449]] (pdf)