The is a specific "frozen" collection of arcade game data files designed for use with emulators that match this exact version. While the official MAME project has moved far beyond this release, version 0.139u1 remains a cornerstone for mobile and lower-powered devices, most notably as the core for the popular MAME4droid (0.139u1) app on Android. The Significance of Version 0.139u1
For version 0.139u1, the community standard was , as hard drive space was still a premium. roms for mame 0139u1 updated
(If you want, I can produce a short checklist for verifying ROMs/CHDs with specific mame commands for version 0.139u1.) The is a specific "frozen" collection of arcade