Learned it on an Amiga 500 and hacked ANSI graphics into Petra BBS. So fun
AmigaBASIC! Used it on my A1000 for a year, then bought a compiler that could build executables out of AmigaBASIC code. Wrote my own terminal program with a zillion bells and whistles. This was after learning TRS-80 Level II BASIC in the late 1970s.
