Hey!
I know nothing about Robotron A7100 but if I got it right:
* it was some kind of computer with floppy disks (5.25 or others?)
* most content was distributed as a bunch files (even original software? in which media? weren't there original floppies)
* most people don't have (at least nowadays, given the rarity of such system?) original, unmodified disks with single apps or games
* the existent disks are all altered, with user data and (several) programs altogether.
That's indeed a problem, we aim to catalog software as close to original as possible. Just like in other systems, the ideal solution would be to dump (image) original media to a proper format and have the emulator read/emulate the image. Similar to what happens with optical discs or in those systems you mentioned, instead of saving a bunch of files in a zip (and calling it a multifile set). Even that creates problems when original media was writable (e.g. Commodore), since userdata (saves, edited files) would alter the original media and hence the ton of "alternate" dumps we have in Amiga.
IMHO, being pragmatic, the best plan could be:
First, dump any untouched original media to the proper image format.
For the remaining apps, if they are not that rare, figure if it is possible to get an original dump from someone (or the least edited possible)
From the other mixed disks a) maybe dump them like they are and save that or b) reorganize any of the rarest / impossible to obtain software in a set has if they were the original release and dump that? c) save them has a bunch of files zipped (the worst solution possible, but that already exists in our Tandy datasets - and is a mess).
None of the mixed disks options is particularly great... lets see if anyone here gives other ideas. You may also receive good ideas and tips from other places with experienced users such as the MAME/MESS boards.
Also, don't forget that we are interested in cataloging it so let us know about your progress
We don't have that system yet. Just for reference, I've extracted the existent file formats in TOSEC dats for our other Robotron systems and they are: .bas, .bin, .com, .dsk, .kcc, .pas, .sss, .z80