GPF has posted a bit of news on his progress with the GBA emulator port to the Dreamcast, this is what he had to say:
Check out this big ol' DCEmu topic for a lot more information about this project.
Originally posted by GPF@ Friday,Jun 18, 2004 at 9:33 pm
(A) little update, Finally got the gb and gbc games working again, after I upgraded the render to use the PVR, it broke the gb/gbc emulator. I switch them to continue to use the SDL rendering to get it to work again.
Check out this big ol' DCEmu topic for a lot more information about this project.