It's called tVMI (t stand for tiny or toy), it was started more than 2 years ago, and has gone through many false starts as I learn what is involved. Indeed, if you look through the list of threads that I have initiated here, including many that describe bugs I have found in Perl, they mostly come out of that project. The interpreter is being written in D, but I tend to try out ideas in Perl first, but that often leadsd me into little used area of perl--like LVALUE refs (which I use as a substitute for pointers) and the like.

I'm currently trying to get to grips with making it do transparent threading which is where this thread started.

If as and when I get something that successfully demonstrates the ideas, I will willing share it with anyone who is interested--if I knew who you were or had a way to contact you, I would do so.