SciSys now is Saitrek, IIRC.
After a while I don`t recall a Turbomaster, just a SciSys Turbostar 432. Myself I actually have a Turbo S-24K, my brother still must experimentally have the 432. I don`t absolutely know if he has the manual still along. If it`s deceptively indeed the Turbosdtar432. I could check it out for you.
Also visit or contact http://www.xtserver.com/brettschachcomputer/oldeis.htm

out.I`d like to thank You in advance! Arthur.