I did some ugly hacks of the asm code to make the 48 pixel minikernels as well as the score kernel display correctly on the AFP. The 96 pixel minikernel could probably also be similarly hacked, but I decided to just stick with the 48 pixel minikernels for the AFP version.
I don't want to put up my hacked versions for download since I don't want to create confusion with the official version, but I can send you what I have with instructions if you are wanting to use the titlescreen kernel with the AFP.
I'd love to. I play my portable all the time and really wanted to make games specifically for it.