[HECnet] Tops-20 ANONYMOUS FAL Preliminary Testing Results/DAP Query

[Steve Davidson]

DECnet/RT-11 was phase III only.  It required the XM monitor and, was a bit of a memory hog for sure.  It only supported serial line connections from what little I remember. In 1983 the RT-11 group acquired the sources from the DECnet group to update it to phase IV but the project was cancelled almost immediately.   But that's another story for another time...

The kit I have is the RX50 binary distribution from the SDC.  I got that kit before I joined the RT-11 group, (I was working in Software Services at the time).

-Steve

> On Dec 21, 2019, at 12:22, Mark Matlock <mark at matlockfamily.com> wrote:
> 
> Steve,
>   Thanks so much for your post! Even getting part of the DECnet/RT-11 distribution is helpful. Do keep us updated on your status with this. This is the closest to having it, I’ve ever heard about!! Thanks and Good Luck finding RX50 #2 !!
> 
> Best,
> Mark
> 
> 
>> On Dec 21, 2019, at 9:59 AM, Steve Davidson <steve at davidson.net> wrote:
>> 
>> I’m the one who has the RX50’s that contain DECnet/RT-11.  The problem is I only can find floppies 1 & 3. Floppy #2 has been missing in action for many years. I have started to go through boxes that were in storage. Hopefully I will get lucky but I’m not holding my breath...
>> 
>> -Steve Davidson
>> 
>> SF:iP1
>> 
>>> On Dec 21, 2019, at 09:07, Mark Matlock <mark at matlockfamily.com> wrote:
>>> 
>>> Zane,
>>> DECnet/RT11 is one of the most significant pieces of lost PDP-11 software. I haven’t been searching for it as long as you, but it is one of the few remaining things I’d like to see the DEC software archeologists find. My most promising lead was that I heard of a professor who taught computer networking “back in the day” and he used two PDT 11/150s connected with a serial port to demonstrate computer networking. Thus DECnet/RT11 was small enough to boot on a dual RX02 system under RT-11 in 32KW Ram.
>>> 
>>> Phase III DECnet can be very small if DDCMP is the protocol. We used to run 11/23s (128KW) with RSX11S that were downline loaded (no disk) their OS and they served 20 users (1 DUV11 and 5 DZV11 or DLV11-J serial cards) with a commodity trading information system. Of course that was re-entrant Macro-11code we wrote but still amazing in the day.
>>> 
>>> Best,
>>> Mark  
>>> 
>>>>> On Dec 20, 2019, at 1:28 PM, Zane Healy <healyzh at avanthar.com> wrote:
>>>>> 
>>>>> On Dec 20, 2019, at 10:33 AM, Paul Koning <paulkoning at comcast.net> wrote:
>>>>> 
>>>>> I can offer help with RSTS.  Yes, there is DECnet/RT11, but I don't know if we have any on HECnet or if the code has even been preserved.
>>>>> 
>>>>>  paul
>>>> 
>>>> I’ve been trying to find a copy for well over 20 years.  There may be a copy in a storage container back east, but I’ve never heard further from the person.
>>>> 
>>>> Zane
>>>> 
>>>> 
>>>> 
>>> 
>> 
>