Countdown to Doom 1984 Acornsoft Hopper 1984 Acornsoft Snapper 1983 Acornsoft Starship Command 1983 Acornsoft Electron Demonstration Cartridge 198? Acorn Tree of Knowledge 1983 Acornsoft LISP 1984 Acornsoft Logo 1985 Acornsoft ISO-Pascal 1985 Acornsoft View 1984 Acornsoft ViewSheet 1984 Acornsoft