Dreamcast Emulators

So I want to play this Dreamcast version of Dinosaur because I have yet to find the PS1 version (if you know where, lmk).
Anyways, I tried running the .cdi file on nuLL, but "Failed to load image file."
Can anybody help me?

Re: Dinosaur for the DreamcastIt might not be self booting...It may need a patch-though not sure-I stopped using that emu because of the hassle (I also lack the correct virtual driver-dam vista compatibility)

DO you know of any other good ones?

Another emulator is Chankast.

So I downloaded Chankast and found the possible Bios and Flash, but when I run the thing, all I see is 4 icons w/no text. Did I mess up? I grabbed the files from *removed*-Don't link to other romsites as per the Forum Rules, cheers ;)

Could you take a screenshot of this?