[ih] NCP, TCP/IP question
steve at shinkuro.com
Tue Mar 10 02:16:04 PDT 2020
Thanks. For anyone who hasn't tracked PDP-10 operating systems, I believe
TOPS-20 and Tenex were the same. Tenex was developed at BBN. DEC provided
the TOPS-10 operating system but it was less capable than Tenex. DEC
acquired the rights to Tenex and brought it out as TOPS-20. I don't know
if there are substantive changes in the process; I have the impression
These systems were connected to the Arpanet when NCP was the host level
protocol. I didn't follow their history through the transition to TCP/IP,
but I have the impression they continued to be commonplace on the Internet
and thus would have had TCP/IP implementations. Others can fill in the
gaps here better than I can.
On Tue, Mar 10, 2020 at 5:08 AM Lars Brinkhoff <lars at nocrew.org> wrote:
> Steve Crocker wrote:
> > I don't think C was used or available on Tenex, but I'm not the most
> > authoritative source.
> There were several PDP-10 C compilers, but I'm not sure whether one
> actually ran on Tenex. Some ran on TOPS-20, so it wouldn't have been a
> big leap.
More information about the Internet-history