ok so I'm a little mad..I answered you 12 hours ago..not sure where my post is..
I missed the part of the uni-bios..yes you would have to set it one by one. However I understand what you are tying to do. I have done the same thing...but I explained how to do it..but because of my missing post..well I'll give you my set up and tell you how to do it because I don't want to type it all out again..if you want I can explain it better in detail tomorrow.
I do want to know though do you just
have to use the uni-bios? If so you can create a neogeo.ini and have all noegeo games use the uni-bios by default..it takes two minutes.
1. create a mame.ini by typing mame -cc if you haven't already done so
2. open the mame.ini in a plain text editor (notepad)
3. press ctrl+F to search..search for bios
4. next to that type uni-bios_3_2
5.
Save it as neogeo.ini6. run a neogeo game to test
You'll still have to set the unibios settings to console for each game though..not sure how they are stored yet..but that cuts down on time and work.
If however you don't care to use the universal bios you can use my config and romlist
1. take the configuation and put it into your attractmode emulators folder
2. take the romlist (aes.txt) and put it in your attractmode romlists folder
3.start attract mode and edit the aes configuration to your paths (executable, artwork) it will be very obvious.
Do not change any other settings! And do not generate a list!4. back out to the attract modelist screen..navigate to the aes list...test a game
You will need the aes bios..(EDIT: newer mame versions use the neogeo bios for AES now.) I will not give you that of course..but if you have a newer mame rom set then you should have it. Remember mame and mess have merged..thus you are using mess to run the aes games.
Let me know if that works or what it is you want to set up...like I said if you want the benefits if the uni-bios..you'll have to set them up one by one..no way around that.