Exclude all arcade games that require a .chd

[firewater]

What ways are there to do this from the filter?

[rand0m]

Filter Edit > Rule: Name-contains-.chd (Filter can have multiple rules/ conditions so you can edit any filter already in use)

[progets]

Chd information isn't stored in the AttractMode romlist so there isn't a simple filter that can be applied. You'll need to get the chd list and be a little creative.

Assuming your AttractMode emulator is called "MAME", I believe the easiest thing to do would be:
1. create, download or generate a list of all the chd file games (one can be found here https://www.reddit.com/r/MAME/comments/2hci59/does_anyone_have_a_listlink_for_all_arcade_games/)
2. create a MAME folder inside your AttractMode romlist folder (i.e. /attract/romlists/MAME)
3. create a text file inside your new MAME folder called chd.tag (i.e. /attract/romlists/MAME/chd.tag) then cut and paste the list of games (without file extensions) from step #1 into this text file and save it
4. create a filter in AttractMode that reads "Tags not_contains chd"

[progets]

Filter Edit > Rule: Name-contains-.chd (Filter can have multiple rules/ conditions so you can edit any filter already in use)

I don't think this will work because MAME games with chd files are still launched using the .zip files and AttractMode doesn't know which MAME games will need to call chd files.

[rand0m]

oh sorry, I thought OP wanted to exclude .chd files from other file formats.

[firewater]

Thanks again guys, it worked. Here's a list of all CHD games for MAME .204 https://pastebin.com/Z1Db8WDP

[progets]

oh sorry, I thought OP wanted to exclude .chd files from other file formats.

No need to be sorry, you were just trying to help someone. At the same time, I was trying to prevent someone from attempting something that wasn't likely to work.

At the end of the day, they got what they needed so I would call that a win for all of us!