I've been able to connect with DynGen

and (C7200-IPBASE-M), Version 15.0(1)M runs and idles once you set a value.

There is still plenty of cleanup to do, and I still need to see if the latest GNS3 can drive this Dynamips. After that I'd like to see a Win64 build, so we don't have the 32bit memory space issues, although the only MinGW64 stuff I have want to be too much like Unix, so things fail all the time trying to build stuff with conflicts with winsock headers.

But the latest binary works with the old style dyngen!