can you when you share screenshot, also share the commandline you use for that ?
thanks in advance
To reproduce my configuration run ./mame64 a310 and wait for the supervisor prompt
The first time you need to configure some parameters in the CMOS RAM
I have used these commands (only the first is really necessary): CONFIGURE MODE 35 CONFIGURE FILESYSTEM ADFS CONFIGURE RAMFSSIZE 10 CONFIGURE FLOPPIES 2
then reset the machine and when you get to the supervisor prompt again use the DESKTOP command.