#retrocomputing: HT @dredmorbius - in his political essay found a link to the #TRS80 users magazine from 1982; this inspired me to find an emulator (I'd seen the actual kit in local Tandy (UK radio shack) since late 70s and was fascinated by them but only a kid back then and they were too pricey for my family to afford!
The emulator is here
http://www.sharp80.com/
(and the sourcecode if anyone wants it)