made a little bit progess, the frontend is now able to start/stop/pause/unpause/reset uae, and quit properly i hope. next is diving into how to change the configuration on the fly. Drummond: perhaps you can enlighten some bits of the meaning of currprefs, changedprefs ? would be easier than figuring it out on my own :) new version: http://fenix/~p035054/getfile.php?nr=11 or i you cant download go http://fenix/~p035054/ -> Files -> last gui-qt file tried to use qthreads and signal and slots for communication between uae and frontend. but this just had too many difficulties. so i resolved to using the gtk way of polling a uae pipe kind regards, Ivo Couckuyt ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.html