For the two or three people that may care, I ported the latest version of
the HECnet bridge to Windows. This isn't a MinGW or Cygwin port, but a
native Win32 console version.
I've been able to use it with Windows NT 4.0 Terminal Server, and binding
Pathworks 7 on a loopback interface, and then using HECnetNT to bridge it to
a Linux box with HECnet, that had a SIMH VAX. Memory and CPU utilization
seems to be pretty small.
As an added bonus I added support for Ethernet_II so you can build NetWare
networks, and added in LZSS if desired to make compressed bridges. However
it'll parse original configurations, and operate in a normal uncompressed
manner by default.
I uploaded it to sourceforge here:
http://sourceforge.net/projects/hecnetnt/
Thanks!
Jason