> OK, Is there a way to "dummy" this up? I've made a zip file, etc. but CLRMame
> ignores it. Shouldn't CLRMame "dummy" this file up?

No. As mentioned in the whatsnew and the ClrMamePro documentation, nodump handling->create missing only adds dummy no dumps to existing sets. It doesn't create pure dummy sets. That new biosset is a 100% dummyset and cmpro doesn't create it. You can fake it easily though. Simply unzip acpsx.zip, rename the file to coh1002e.bin and zip it to psarc95.zip.

Roman Scherzer
ClrMamePro