[Coco] emulator for Big Basic?

[PaulH96636 at aol.com]

Would any of the emulators allow use of Danosoft's Big Basic
series of programs for coco-3s using 512k or more?

I haven't seen any usage of Big Basic's capabilities in actual
programs for sale since it came out in 1988.  Same thing with
KeyColor Software's Key-264K for the coco 1&2.   

Don't know if the authors could still be contacted. At least the
manuals should be archived, imo.     -ph