The http://dev.dcemulation.org/mamed/ has been updated with this news:

Warmtoe has released a compile of MAME for DC that plays williams drivers. He also hacked around and fixed sound well, and added an option for bilinear filtering. You can download the .elf from his site OR if you dont know how to use .elf’s. I have converted it to bin and uploaded it locally. You can pick up the bin from the Available Games section!