SEX Computer - 6809 on Breadboard
$2 for 10 PCBs & 24 Hour Production: https://jlcpcb.com
Clickbait title - the 6809 microprocessor has an instruction named SEX (Sign EXtend B into A). So I thought I'd get a lovely old 6809 to execute the SEX instruction repeatedly :)
Data sheets:
http://www.flexusergroup.com/flexusergroup/pdfs/6809ist.pdf
http://www.gbgmv.se/dl/doc/md09/MC6809_DataSheet.pdf