[HECnet] ANF10 network --> DN200/DN20 --> instant gratification ...?

Thu Nov 18 10:26:34 PST 2021

On 11/18/21 11:10 AM, R. Voorhorst wrote:

> Hi,
>
Hi.
>
> For the impatient amongst thee I have as interim solution the 
> following, pending the release of the software tree:
>
> 1.The load image for simh Pdp11 of Anfu63 being a 5 sync line DN200 
> with peripherals with node-number 63 (routers top down allocated).
>
> 2.The simh config file for configuring a working simh Pdp11/34 with 
> the proper throttling to make it work; the proper setting is important 
> because of Chk11 init phase which is instruction timing based!!!
>
How does one arrive at a realistic argument for throttle? Did you put 
2000/1 because you reckon your host processor does 2000 instructions in 
the same time as the guest processor does 1? Or is it more pure clock 
speed based?

SET THROTTLE 2000/1

Regards,
Supratim


> 3.The pdf of the complete listing file of the Anfu63 load image.
>
> This configuration maxes out on the number of possible connections to 
> be usable as a star formation router.
>
> Beware: the plt plotter device is absent in current simh Pdp11 as I 
> added it in my simh variants for Pdp8A sim (almost finished), Pdp11, 
> Pdp10 and Pdp10-KI/KL; it should not be a problem and can be commented 
> out. The config is for a Windows platform but you Unix/Linux guys will 
> easily hack it into your suitable form.
>
> The config file is self-explanatory with respect to interconnecting; I 
> keep a port number allocation schema for all my Decnet/Anf10 nodes.
>
> This configuration runs on a Pdp11 simh with a commit date from about 
> 2 years ago, but I do not think it will preclude the current last commit.
>
> It you got it running, you can inspect the running node with Ddt11 
> from a KS10 based system.
>
> Download link: 
> https://drive.google.com/file/d/170HhUK84d81MMjre8z5vgEennxPdJ10g/view?usp=sharing
>
> If problems, contact me …
>
> Fun and success,
>
> Reindert
>
> *From:* R. Voorhorst [mailto:R.Voorhorst at swabhawat.com]
> *Sent:* Wednesday, 17 November, 2021 10:07
> *To:* hecnet at Update.UU.SE
> *Cc:* 'Robert Armstrong' <bob at jfcl.com>; 'Peter Lothberg' <roll at stupi.com>
> *Subject:* RE: [HECnet] ANF10 network --> Kdp/Dup --> recipe for 8 Dups
>
> The following recipe enables 8 dups:
>
> In simh in Pdp10_defs.h: #define DUP_LINES 8 /* max # of DUP11's */
>
> and rebuild the pdp10.
>
> In Tops10: Edit NETPRM.MAC in the monitor build tree, usually in 
> [10,7,MON], and modify: MXNDUP==^D8
>
> from ^D2 and reassemble NETPRM and D8KINT and replace it in TOPS10.REL.
>
> In SYSCNF.MAC  locate M.KDUP and modify as follows
>
> M.KDUP==:10
>
> ;;      Type of line for KDP0 (ANF10,DECNET,USER,IBM) [
>
> ;;      This question is asked for each KDP (KMC/DUP line) indicated 
> in the
>
> ;;      previous question.  Type the name of the network product that 
> the line
>
> ;;      will support.]: d
>
> M.0KDP==:2
>
> M.1KDP==:2
>
> M.2KDP==:2
>
> M.3KDP==:2
>
> M.4KDP==:1
>
> M.5KDP==:1
>
> M.6KDP==:1
>
> M.7KDP==:1
>
> The above values are for 4 Decnet and 4 Anf10 but that can be filled 
> in differently as needed
>
> Then rebuild the monitor.
>
> Change the Simh Pdp10 config file with the required settings set dup 
> lines=8 and attach definitions for Dup0 to Dup7.
>
> That is all there is to it; if the instructions are to sparse I will 
> expand them; patched files are overkill here as generally my files 
> have evolved further in version numbers and features and undoing the 
> unnecessary ones may lead to errors.
>
> The DN200 files have to wait till next week as I have other 
> obligations at the moment.
>
> Success,
>
> Reindert
>
> *From:* Robert Armstrong [mailto:bob at jfcl.com]
> *Sent:* Tuesday, 16 November, 2021 21:33
> *To:* R.Voorhorst at swabhawat.com
> *Subject:* RE: [HECnet] ANF10 network --> Kdp/Dup
>
> Reindert,
>
>   Post the details, please!   Especially the TOPS10 patch.   MONGEN 
> limits you to two lines on the KS, but even if I manually edit the 
> resulting SYSCNF.MAC file I still get errors when building the monitor.
>
>   Are you also running an ANF10 network?
>
> Thanks,
>
> Bob
>
> *From:*owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] 
> *On Behalf Of *R. Voorhorst
> *Sent:* Tuesday, November 16, 2021 12:18 PM
> *To:* hecnet at Update.UU.SE
> *Subject:* RE: [HECnet] ANF10 network --> Kdp/Dup
>
> L.S.
>
> It is quite easy to expand this; currently I run 8 lines from the 
> Kdp/dup and it works quite well.
>
> It needs a slight adaptation in Simh and another in Tops10, but you 
> have to rebuild the monitor.
>
> Reindert
>
> *From:* owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] 
> *On Behalf Of *Robert Armstrong
> *Sent:* Tuesday, 16 November, 2021 17:34
> *To:* hecnet at Update.UU.SE
> *Subject:* [HECnet] ANF10 network
>
>   Supratim and I (with some help and encouragement from Peter) have 
> set up an ANF10 network between the TOPS10 nodes VENTI and TWONKY.  If 
> you haven’t heard of it, ANF10 (short for “A Networking Feature” – 
> yes, really!) predates DECnet (I’m pretty sure, although I’m sure 
> there will be debate about that) and provides mostly the same 
> functions – remote terminals, file transfer, etc.  ANF10 also has 
> remote RJEs with card readers, line printers and terminal concentrators.
>
> .net/anf
>
> [ANF10 network: connected to VENTI(20), located at VENTI(20), 2 nodes]
>
> Node VENTI   (20)    SIMH KS10 VENTI 7.04 NET        14-Nov-21
>
> Node TWONKY  (37)    SIMH KS10 TWONKY 7.04NET        15-Nov-21
>
>   It’s possible to run ANF10 and DECnet both, and that’s what we’re 
> doing so TWONKY and VENTI are also available on HECnet.  If anybody 
> else has a TOPS10 system and would like to connect it would be nice to 
> add a few more nodes, but there is a problem.  TOPS10 supports a 
> maximum of two KDP/DUP lines on the KS10, and you need one for DECnet 
> and the other for ANF10.  That means each system can talk to at most 
> one other ANF10 system, which limits the network size to two nodes.   
> Bummer…
>
>   There are a few options available –
>
> ·DEC made some DNxx PDP-11 boxes that supported multiple ANF10 
> connections.  We could set up one of these as a router.
>
> ·Somebody could hack TOPS10 to allow more than two DUP lines.
>
> ·Somebody could write a pyDECnet type gizmo that speaks ANF10.
>
> And there might be others that I haven’t thought of yet.  Any ideas?
>
> Bob
>
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