TILP (formerly GtkTiLink) can transfer data between Texas Instruments graphing calculators and a computer. It works with all link cables (parallel, serial, Black/Gray/Silver/Direct Link) and it supports the TI-Z80 series (73..86), the TI-eZ80 series (83PCE, 84+CE), the TI-68k series (89, 92, 92+, V200, 89T) and the Nspire series (Nspire Clickpad / Touchpad / CX, both CAS and non-CAS)
https://github.com/debrouxl/tilibs/blob/master/libticalcs/trunk/src/keys83p.h is missing a bunch of 2-byte keypresses, the entire 'second part' of the $FE tokens, starting at $80. For example, $FE $82 = "Xmin" etc.