>is not only about emulation but also preservation.
Yep. Especially for the pcb owners that if the rom data should go sour (bitrot etc), then MAME might have exact rom set data documented so pcb owner has a chance to replace a rom knowing what the rom data should consist of.
>Currently there are at least two loaders that could let you run them on on your >Windows/Linux OS. None have bothered to offer the correct checksums or a vanilla dump to >restore an original arcade cabinet. It's nice to have a correct dump from something that >has been hacked to death without offering the original files.
I didn't know there were that many games for that hardware.
src/mame/drivers/lindbergh.cpp
That is a race to get as many more supported possible before the originals are lost. It is fortunate that many of the alternate region revisions of CPS-2 and some of CPS-3 are already documented properly even though are still fair number yet to be found.