Cannot download M.a.m.e 0270 Full
What a topic and what a description of the error ;-)
https://www.retroroms.info/forum/topic/Downloads.htm
https://www.retroroms.info/forum/topic/BDA-folder-structure.htm
does work, maybe not so fast as expected:
https://bda.retroroms.net/downloads/mame/currentroms/ (point to the *-full folder)
Keep in mind that to download files -> only one at the time otherwise our firewall will block you.