[Info-vax] Further on the PDP-10 [was Re: Hard links on VMS ODS5 disks]

[Rich Alderson]

gah4 <gah4 at u.washington.edu> writes:

> On Friday, July 28, 2023 at 1:03:20=E2=80=AFPM UTC-7, Rich Alderson wrote:

>> [2] The Stanford developed Ethernet interface for the KL-10, available years
>> before the NIA-20 which came out of the cancelled Jupiter project. The
>> MEIS was more featureful than the eventual Digital product.

> 3MB/s or 10MB/s?  I only recently learned that Stanford built the 3MB/s
> Ethernet for the Sun-1.  That way they could use the Sun-1 as a gateway.

The original MEIS was 3Mbit.  I installed one of the first 10Mbit MEISes on a
DEC-20 at LOTS.

You have the order backwards, by the way.  The 3Mbit PUP network was created to
connect the dozen TOPS-20 and TENEX sites around campus, and PUP routing was
inserted into the monitors.

The SUN ("Stanford University Network") processor board was built for a
different project, a 3M desktop system ("1 MIPS, 1MB memory, 1M pixel
display").  Only after the Ethernet went in did it become a 4M processor ("and
1MB/sec networking").

It became the "Sun-1" only after the engineering grad student who did the
detail design based on the high level design from a well known TOPS-20
personality took his B-school friend's advice and started a company.

-- 
Rich Alderson					  news at alderson.users.panix.com
      Audendum est, et veritas investiganda; quam etiamsi non assequamur,
	  omnino tamen proprius, quam nunc sumus, ad eam perveniemus.
									--Galen