Using CVS version is also easy. You only need the following files to create a CDI:
- fsl.bin (is the binary menu loader, like 1st_boot)
- data folder (contains some images that the boot uses)
- exec folder (contains the XML that you know how to use it).
Btw, if you use the Chui's version from his homepage, it has a serious bug with the "delete_text" function. Instead, I recommend you use this newer version:
Waiting for you new game ^^