Interesting. >I thought the TCP/IP stack was years ahead of Windows, not quite comparable to what you'd find on SunOS/Solaris or whatever DEC ran on the microv

Interesting. >I thought the TCP/IP stack was years ahead of Windows, not quite comparable to what you'd find on SunOS/Solaris or whatever DEC ran on the microvax workstations. I remember back in the day, people saying that the TCP/IP and Internet layers on Windows were not good. There was this software called Trumpet Winsock, which may have tried to make things better. https://en.wikipedia.org/wiki/Winsock#Other_implementations https://en.wikipedia.org/wiki/Winsock#Other_implementations You may be interested in "Mike's PC Jr. page" which is linked to in this blog post: Lissajous hippo, retrocomputing and the IBM PC Jr.: https://jugad2.blogspot.in/2012/09/lissajous-hippo.html https://jugad2.blogspot.in/2012/09/lissajous-hippo.html He wrote a TCP/IP stack for his IBM PC Jr. and is using it :)