I am running MegaCE3 on my Jornada 568 and love it! It works great for most of of the games I have tried. But there are some games (Defender, Zoo Keeper, Qix, Joust etc.) that seem to work but start up in system config or test mode and I can't get them to play. The only key that seems to work in this mode is the button to return to the main Mame menu. None of the other buttons seem to have an effect to navigate the particular game's test menu or kick it back out to normal game operation.
It sounds like many many people with the same Jornada are playing these games without difficulty. What is the trick to fix this? I have looked for a .cfg file but have not found a general one in the mame directories on the Jornada. The game files (e.g., defender.cfg) seem to be in a binary format rather than something I can edit in notepad.