Can't read dc_bios.bin

[SPARTAN-III]

That message comes up whenever I try to start my game. I have Sonic ADventure in my virtual drive so I go to to Chankast and click Run, then Start. Then the message "can't read dc_bios.bin" comes up. Can anyone tell me how to fix this problem? I have Chankast Alpha v0.25.

Thanks in advance!

[Cid]

Are you sure you have the right bios and flash files?

[smcd]

You must have the BIOS files from a Dreamcast. No one will tell you where to get these, but if you search the forums, there are other threads discussing these needed files (you can dump them from your own Dreamcast).