thanks,
that helped a little. this is my current bios:
ROM = "EvoX V2.5.colormod.err.evox",0x097C581438C69DE515A346D19A9D9C41
maybe it might be a good idea if any of you has a spare debug-xbox to flash different bioses and make a detailed list of which work and which wont.. but then again it might be a specific chip thing...
you might be happy to know that i might be contributing the openXDK version of DML lib to the xbox-scene once its finished. its a fully transparent lightweight hardware abstraction layer for consoles completely done from scratch (so no external libraries/systems for audio/video/etc.), mainly focused on 2d, that works on about every console imaginable.. (anything from playstation1, saturn, to xbox and dreamcast). because it completely seperates functionality from hardware specific stuff its fairly easy to port.. also everything is written very lightweight so it will also work on 'less-manly' platforms, howeveron some platforms like the jaguar (13mhz m68k) or ps1 (33mhz mips) its ofcourse still troublesome to do some things.
it offers a lot of features however. soundmixing, bitmap loading (tga,bmp,pcx,etc.),sprites drawing/handling.bitmap handling (also rotated),etc. and fairly easy to use.
its currently being used by students on the school that where teach game-design.
i'm currently finished the dml website, so i'll be posting the URL when its live..