> So what you are saying is every time I update the mame32.exe to the newer
> version, then I rerun CLMamePro and it gets the updated data? Where is this
> updated data? I thought that was what the datfile was for but you say I don't
> use that at all.

When you update your MAME binary, clrmamepro detects the change and will get the new database directly from the binary. You don't need external datfiles for MAME.



> So where can I get the updated ROM sets? I thought that was what the datfile
> was for.


A datfile, or in this case a direct data import from a MAME binary, only got the romset definitions like setname, romnames, romsizes and checksums.
It's the database which is used for verifying your romsets on your harddisk.



Roman Scherzer