Quoted from BobC:The boards for sale have games that were re-written new from scratch, not the original code / roms,
and synthesize a reasonable likeness of the original sounds.
That's my understanding of how they get away with it if not licensed?
As others have said, they are running an old version of MAME on an underpowered ARM processor. They are running bootlegs of the original ROMs, but even if they were not, the original games were protected by likeness copyrights where it was adjudged that if there was substantial visual or auditory similarities then there was infringement. Namco used this sledgehammer quite successfully throughout the 80's destroying countless PAC clones.
Quoted from facelift:60 in 1 boards and all others except the arcadeSD are running a very old version of mame.
That's why the emulation sucks, because it's old.
If they updated the boards and used a new mame build, the emulation would be great.....
But, they would still be illegal...especially to have on a location.
They have new versions on significantly better processors. Last time I looked, the 619n1 boards were knocking on the $100 mark. There are even 3000+n1 boards out using a modified PC motherboard running at 1.4GHz. The version on MAME bootlegged is newer, but I can't say the emulations are that much better, just more of them.
ken