> TI and their 20 year old designs TI calculators are awesome! Definitely feeling some nostalgia for coding in Z80 assembly language. HN readers may be inter

> TI and their 20 year old designs TI calculators are awesome! Definitely feeling some nostalgia for coding in Z80 assembly language. HN readers may be interested in efforts to unlock the OS on more recent models [1] [2]. [1] http://www.ticalc.org/archives/news/articles/14/145/145154.html http://www.ticalc.org/archives/news/articles/14/145/145154.h... [2] http://en.wikipedia.org/wiki/TI-83_series#Signing_keys http://en.wikipedia.org/wiki/TI-83_series#Signing_keys