Extract them into a folder inside your hard drive. Make a folder named 'data'.
Here is the folder’s structure:
data>Game Menu.nds
data>dsdoom
data>dsdoom>(Loads of folders, which are the wad’s names)
data>dsdoom>prboom.cfg
data>dsdoom>prboom.wad
data>dsdoom>wadsel.ini
data>dsdoom>Tranmap.dat
After making sure you have these, copy the whole data folder in the root of your flashcard.
Adding extra WADs
First, you need to have the wad…
For the example, we’ll use the file “whatever.wad”.
Go to data>dsdoom and make a new folder. Name the folder as you have named the wad (So for the example, the folder is going to be named whatever).
Inside the folder, put your wad.
Now open
data>dsdoom>wadsel.ini
with Notepad or whatever program you use for text editing.
Now, go to the bottom and add this:
[Whatever]
savpath = Whatever/
wad = Whatever/ Whatever.wad
Don’t forget to edit whatever to the name that your wad has
Make sure there’s an empty line between the wads you’ve added into the file.
And now, random analysis
[Whatever]