The winter edition of the Retrochallenge competition will be held from 1-1-2014 until 31-1-2014. Everybody with a retro computer project can compete. Examples of the entries are: TCP/IP stack Macintosh 128K. New game for the hand-held toy from Mattel. New programming language for the C64. Apple II Prince of Persia. ViewData BBS system. An 6502 based computer. Memotech MTX512 rebuild. Apple /// programming project.