> B2K... are you the unofficial, official commandline MAME "u" compiler?
> And how come you didn't post the attachment MAME 0.145u7a? Is it because the time you
> got around to compiling, the b fix was already posted/updated?
The B universally signifies BINARY.
> Also, how come, in your MAME 0.145u7b compiled build, you included all those .exe
> files that normally aren't included with the official MAME download from MAME's
> official website? There are about 11 extra .exe files that are in your download:
They are tools related to MAME. Some are developer related, some for the users to help manage images. They are always included in original binaries from MAMEDEV.org. If they are somehow not in the official packages, it sometimes happens. They are intended to be in all binary packages.