HECnet

hecnet@lists.dfupdate.se

6 participants
15552 discussions

by Peter Lothberg

Anyone that has the print set of M7196 or just the pin out of the tape drive connectors? It's part of TSV05 tape subsystem. -P

2 years, 8 months

DECnet Phase V on VAX/VMS

by Trevor Warwick

I'm a recent joiner to HECnet, and wondered if anyone else has played around with Phase V software at all ? Obviously HECnet itself is a Phase IV network, but you can connect Phase V VAX endnodes using the Phase IV compatibility mode. All my systems are simulated with simh, and getting an Ethernet connection to work was very straightforward, there's just a bit more local configuration required than with Phase IV. However, I spent quite a few years at DEC working on VAX synchronous device drivers, so I was interested to see whether I could get a WAN connection going. The biggest issue was device support. DECnet-VAX Phase V doesn't support any of the older microcoded interfaces (DMC11, DMV11, KMX11 etc), and the later devices (DSV11, DSB32, DST32, etc) aren't supported by simh. The only intersection is actually the DUP/DPV11, where there was a new VMS driver (SEDRIVER) for Phase V, that replaces the individual protocol-specific drivers that were previously used with these devices. I've spent quite a long time this week dredging stuff out of memory from 30 years ago, and still failing to get a DPV11 link to come up, until I eventually realised that a) there are some significant differences between the DUP and DPV, and b) simh does not support the DPV properly (how is one supposed to know this?) ! So after changing my simulated microVAX into an 8600, and the DPV into a DUP, I've managed to get a DDCMP link to come up between this and a PyDecnet router. There still seem to be some rough edges, as it won't always come up until PyDecnet is bounced, and it's also a bit slow for interactive use, as if there's something that's only working on a retransmission, or timer expiry. Anyway, it's been a fun nostalgia exercise to get this far, I'll probably mess about with it some more. Let me know if you have any questions... TOGATH$ mcr ncl sho routing circuit ddcmp-0 adj * all Node 0 Routing Circuit DDCMP-0 Adjacency RTG$0001 at 2022-03-11-15:28:50.820+00:00Iinf Identifiers Name = RTG$0001 Status Type = Autoconfigured State = Up Neighbor Node Type = Phase IV Router Router NETs = { 49::00-1D:AA-00-04-00-D5-75:00 (LOCAL:.TWPD) } TOGATH$ mcr ncl sho modem connect line ddcmp-0 all Node 0 Modem Connect Line DDCMP-0 at 2022-03-11-15:29:33.660+00:00Iinf Identifiers Name = DDCMP-0 Status UID = 5AFC9FC0-A14A-11EC-8002-AA000400C475 State = On Interface State = Full Enabled Actual Speed = 0 Loopback Mode = Null Interface Type = Unknown Modem Type = "" Device Availability = Device Present Request to Send = Asserted Clear to Send = Asserted Data Set Ready = Asserted Data Terminal Ready = Asserted Carrier Detect = Asserted Signalling Rate Selector = Unknown Signalling Rate Indicator = Unknown Ring Indicator = Not Asserted Remote Loopback = Not Asserted Local Loopback = Not Asserted Test Mode = Unknown Characteristics Communications Port = DPV-0-0 Connection Type = NonSwitched Communications Mode = Synchronous Duplex = Full Profile = "" Modem Control = Full Modem Options = { } Encoding = Normal Clock = External Speed = 0 Alternate Speed = 0 Rate Select = High Maximum Enable Transmit Timer = 2000 Suppress Test Indicator = True Transmit Holdoff Timer = 0 Carrier Loss Timer = 15000 Minimum DTR Deassertion Timer = 2000 Maximum Disable Transmit Timer = 500 Call Accept Timer = 0 Successful Call Indication Timer = 30 Maximum DSR Deassertion Timer = 5000 Counters Creation Time = 2022-03-11-14:48:46.780+00:00Iinf Losses of Clock = 0 Cable Faults = 0 Times DCE Not Ready = 0 Transmit Enable Timeouts = 4 Losses Of Carrier = 0 Rate Fallbacks = 0 Test Indications = 0 Framing Errors = 0 Times Cable Detected = 0 Device Errors = 0 Times Reset = 4 c CTF V1.0-00 Page 1 Trace started on 11-MAR-2022 15:45:28.40 Analyzed on 11-MAR-2022 15:45:56.95 Trace File DUA1:[TREVOR]CTF$TRACE.DAT;3 Output File DUA1:[TREVOR]XX.TXT;4 -----------+----+-----+<--------DDCMP Frame-------->+--------------------------` Time |Evnt|Data | Typ QS Res Num Ctl Adr Count|Data ` hh mm ss cc| |Size | | ` -----------+----+-----+<--------------------------->+--------------------------` 15:45:28.40| Tx| 85| DAT S 77 86 1 77| 0A C5 75 C4 75 01 21 35 E` | 01 04 C3 02 EE 81 C6 01 2` | 2E 30 85 02 03 E8 C4 01 0` 15:45:28.41|Rx | 22| DAT 85 78 1 14| 05 D5 75 0A AA AA AA AA A` 15:45:28.56|Rx | 6| ACK 86 1 | 15:45:28.57| Tx| 6| ACK S 78 1 | 15:45:32.80| Tx| 85| DAT S 78 87 1 77| 0A C5 75 C4 75 01 21 35 E` | 01 04 C3 02 EE 81 C6 01 2` | 2E 30 85 02 03 E8 C4 01 0` 15:45:32.81|Rx | 62| DAT 86 79 1 54| 02 C4 75 C5 75 02 21 2E D` | 01 04 C6 01 23 01 11 30 3` | 03 E8 15:45:32.81| Tx| 25| DAT S 79 88 1 17| 02 C5 75 C4 75 01 21 09 6` 15:45:32.82|Rx | 6| ACK 87 1 | 15:45:32.94|Rx | 6| ACK 88 1 | 15:45:32.95|Rx | 62| DAT 88 80 1 54| 02 C4 75 C5 75 02 21 2E D` | 01 04 C6 01 23 01 11 30 3` | 03 E8 15:45:33.07| Tx| 6| ACK S 80 1 | 15:45:38.48|Rx | 31| DAT 88 81 1 23| 02 C4 75 C5 75 02 21 07 F` 15:45:38.48| Tx| 40| DAT S 81 89 1 32| 02 C5 75 C4 75 01 21 07 F` | 00 00 00 00 00 00 15:45:38.49|Rx | 31| DAT 88 82 1 23| 02 C4 75 C5 75 02 21 07 F` 15:45:38.49| Tx| 25| DAT S 82 90 1 17| 02 C5 75 C4 75 01 21 09 6` 15:45:38.50|Rx | 6| ACK 89 1 | 15:45:38.60|Rx | 6| ACK 90 1 | 15:45:39.72|Rx | 58| DAT 90 83 1 50| 02 C4 75 C5 75 02 21 07 F` | 00 00 00 00 00 00 01 02 1` 15:45:39.72| Tx| 25| DAT S 83 91 1 17| 02 C5 75 C4 75 01 21 09 6` 15:45:39.73| Tx| 25| DAT S 83 92 1 17| 02 C5 75 C4 75 01 21 09 6` 15:45:39.73| Tx| 80| DAT S 83 93 1 72| 02 C5 75 C4 75 01 21 07 F` | 00 00 00 00 00 00 01 02 F` | A0 13 00 30 02 30 60 F9 0` 15:45:39.73| Tx| 38| DAT S 83 94 1 30| 02 C5 75 C4 75 01 21 07 F` | 00 00 00 00 15:45:39.73| Tx| 49| DAT S 83 95 1 41| 02 C5 75 C4 75 01 21 07 F` | 00 18 00 42 70 50 00 A0 1` Buffer: XX.TXT | Write | Insert | Forward

2 years, 8 months

TOPS-20 boot camp for VMS users

by Robert Armstrong

I thought some of the HECnet crowd might find this interesting https://groups.google.com/g/alt.sys.pdp10/c/WnsETCDyTmc "TOPS-20 Boot Camp for VMS Users 05-Mar-2022" (that's this Saturday), and they'll even give you an account on a real (not simulated!) 36 bit machine, an XKL Toad. Bob

2 years, 8 months

The domain Update.UU.SE...

by Johnny Billquist

Seems to not work anymore. Not sure if it is permanent. But anyway, for anyone wanting to reach Mim, as has been announced before, she's still available as Mim.Stupi.NET. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt(a)softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

2 years, 9 months

Mailman Question When Using a Forwarding Service

by Rob Jarratt

Hello Everyone, Are there any Mailman experts here? The way I use my email addresses is that I have an email address provided by my ISP (Robert.jarratt(a)ntlworld.com <mailto:Robert.jarratt@ntlworld.com> ), but I use an email forwarding service to forward rob(a)jarratt.me.uk <mailto:rob@jarratt.me.uk> to my ISP mailbox. This means that I can receive email sent to rob(a)jarratt.me.uk <mailto:rob@jarratt.me.uk> , but any email I send comes from Robert.jarratt(a)ntlworld.com <mailto:Robert.jarratt@ntlworld.com> . I do put rob(a)jarratt.me.uk <mailto:rob@jarratt.me.uk> in the reply-to. Can Mailman be configured to accept emails from my outbound address, but send them to my forwarding address? I would like to do this for my subscription to the HECnet list, if possible. If I can't then so be it, but I thought it worth asking. Thanks Rob

2 years, 9 months

Re: [Hecnet] HECnet mail list move

by Rob Jarratt

Hello Johnny, I am not sure if I did get two copies of this email so I don't know if I am on the new system. I don't remember what email I would be registered under, it will either be rob(a)jarratt.me.uk (preferred) or Robert.jarratt(a)ntlworld.com. I don't want to create an account to manage myself until I know which email (if any) I am registered with in the new system. Would you mind checking for me please? Thanks Rob > -----Original Message----- > From: Johnny Billquist <bqt(a)softjar.se> > Sent: 21 January 2022 01:10 > To: hecnet(a)lists.dfupdate.se; hecnet(a)Update.UU.SE > Subject: [Hecnet] HECnet mail list move > > Ok. Since I'm a busy (and lazy) bum, this have taken way more time that it > should have. > > But here it is. The HECnet mailing list is moving. It has to. > First of all, hats off, thanks, and apologies to Bob Armstrong and Dave > McGuire. They both offered to help move the mailing list, and put time into > it. Unfortunately, I've not had time to really work on it, and in the end the > people at Update also worked on migrating all other stuff that was running > there, which included various other mailing lists as well, so the HECnet > mailing list was more or less able to be moved without any work on my part, > except for some tweaks to settings. > > So while much of Update is, for the time being, turned off, the mailing list can > live on. > > The address do change, however. As you can see. The new address is: > > hecnet(a)lists.dfupdate.se > > This is now running under mailman, which do mean that there is a web > interface for people to control their subscriptions, as well as the possibility of > digests and archives going forward. > > All current subscribers are already subscribed at the new address. If anyone > disagrees with that, they can unsubscribe, or let me know and I'll unsubscribe > them. > > I'm sending this mail to both the old and new list, so everyone should get two > copies of this mail. If you are not, check possible spam boxes, and let me > know if I should investigate something on my side. > > The web page for the list is: > https://lists.dfupdate.se/postorius/lists/hecnet.lists.dfupdate.se/ > (I think I got that right, let me know otherwise) > > Johnny > > -- > Johnny Billquist || "I'm on a bus > || on a psychedelic trip > email: bqt(a)softjar.se || Reading murder books > pdp is alive! || tryin' to stay hip" - B. Idol > _______________________________________________ > Hecnet mailing list -- hecnet(a)lists.dfupdate.se To unsubscribe send an email > to hecnet-leave(a)lists.dfupdate.se

2 years, 9 months

Weird microcode bug in the 11/60 CPU

by pbirkel＠gmail.com

Johnny; I would be interested in hearing more about this (or any) 11/60 microcode bug :->! And how the OS (which?) worked around it. >>> Subject: [HECnet] Re: KG11 emulation probably defective -->diagnosticZKGAB0for KG11 runs without complaints. ..... There is a weird microcode bug in the 11/60 CPU, which force the OS do so some silly things in general, in order to run correctly one that one CPU. Things that are just wasting a few cycles on all other CPUs. I bet DEC had fun figuring that one out... (I don't remember the exact details now, but I could go in and read the code to find out again, if needed, unless someone else remember the specifics.) Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt(a)softjar.se <mailto:bqt@softjar.se> || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol _______________________________________________ HECnet mailing list -- hecnet(a)lists.dfupdate.se <mailto:hecnet@lists.dfupdate.se> To unsubscribe send an email to hecnet-leave(a)lists.dfupdate.se <mailto:hecnet-leave@lists.dfupdate.se>

2 years, 9 months

DEC hardware for grabs in NL

by Wilm Boerhout

A friend of mine has a bunch of hardware that needs a new home. No charge, but it has to be picked up in Zoetermeer, The Netherlands. He asked me to post it here, if you are interested I will get him to contact you. Rgds, Wilm Servers * AlphaServer 1000A * Power supply defect, stops 1 sec after sdtartup * Status unknown * DEC 2000 Model 300 AXP, aka DECpcAXP150, aka Jensen * working (front panel damaged) * Internal disk RZ28B (2.1 G) * Internal disk RZ26L (1.05 G) * RRD44 CD drive * RX26 floppy drive, not working Storage Shelves * 2x BA356-RC (blue) * 1x BA356-SB (beige) * 5x Power supply * 2x I/O module BA35X-MH (70-31490-01) * 1x I/O module BA35X-MG * 1x BN21W-0B Y-connector Disks * 6x RZ1FC-VW (36.4 G) * 4x RZ1ED/EF-VW (18.2 G) * 3x RZ1DA/DB-VW (9.1 G) * 11x RZ1CB/CF-VW (4.3 G) * 4x RZ29B-VA/VW (4.3 G) * 2x RZ28-VA (2.1 G) Tape Drives * 1x TZ89, rack mount * 2x TZ88 rack mount

2 years, 9 months

Re: KG11 emulation probably defective -->solved (by Paul as it is) --> from the KG11 drawings; issue closed

by R. Voorhorst

Actually, the wiring is slightly more complex as the counter is reset by the bus init signal on the clr inputs, however the load signal presets the counter to a value depending on the selected polynomial. The counting in hardware is even more complex as the counter is a 1 bit binary counter combined with a 3 bit binary counter to cover the range from 8 to 12 to 16 steps clocking and varying between 10 Mhz and single stepping to develop the Done flag setting which freezes the clock generator which is a gated oscillator. But since the implementation of Simh does not follow the hardware but only replaces it with a functional equivalent, the software counting is implemented differently and then it suffices to clear the pulsecnt variable per the second proposed solution. Reindert -----Original Message----- From: Paul Koning [mailto:paulkoning@comcast.net] Sent: Wednesday, 02 February, 2022 15:44 To: Reindert Voorhorst <R.Voorhorst(a)swabhawat.com> Cc: HECnet <hecnet(a)lists.dfupdate.se> Subject: Re: [HECnet] KG11 emulation probably defective -->solved (by Paul as it is) > On Feb 2, 2022, at 4:09 AM, R. Voorhorst <R.Voorhorst(a)swabhawat.com> wrote: > > L.S. > > So in the end I had little to do J (thanks Paul and Johnny), and the updated code by Paul fixes the problem and yes, the diagnostics still complete without complaint. A check of the engineering drawings should verify/confirm how the pulse count is actually terminated/reset in hardware. From the manual (which reproduces a bit of the schematic in support) the more precise definition is that the counter is reset by a data register load. That would make a difference in observable behavior if single step mode is used: DONE would come on after the correct number of single step operations. I'll submit a PR with that version. Thanks Reindert for verifying the fix. paul

2 years, 9 months

PyDECnet T1.1

by Paul Koning

I've put the beta PyDECnet T1.1 up on area router PYTHON. That will make a more interesting test than the previous one (which was to have it running on 28NH, the HECnet mapper). It seems to be working ok, but if anyone sees strange behavior that might be connected to this node, please let me know. The code should be faster, significantly so in a few spots. I suspect that won't be all that noticeable in practice. It should also have some bugs fixed. Among them are some NICE protocol issues: there were problems with reporting adjacent node information some of the time, those should be gone in this code. paul

2 years, 9 months

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

HECnet