I've been trying to get mamece3 for the casio BE-300 to work for a couple days now, with no success. The first time mamece3 is run, it brings up the menu, but when you run a game, the screen goes blank, and nothing happens.
On soft reset, the application crashes with a GX.dll error message about direct screen access (indicating that the version of GX.dll that is included in mamece3 is not the same as the version included in the O/S). This also explains why it kinda works once- on the BE-300 all files copied into the windows directory that are not stored in a specific patch directory get destroyed on a soft or hard reset, and since the GX.dll is stored in this way, this would explain the problems.
However, that still does not solve the problem that the software still doesn't work (blank screen on load), even with the included GX.dll...
Any help or suggestions would be greatly appreciated.