Dreamcast GDI Compatibility List

[fafadou]

when you chose cdda, the switch goes automatically to async 16 it's maybe why it's better with 4*4 evo because it's cdda game.

hydro thunder is not a vga native game but it seems it's patchable with hex edit changing the vga flag to 00 to 10 in the ip.bin with the PAL version only. But how to rebuild the .gdi after ? Do you have a good tool for this , Because this is a cdda game too ; not so easy to change...
Maybe we can change it in the track01, 03.bin directly ?