HECnet

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15589 discussions

by flvoigt＠gmail.com

@Ian: I compiled a list with IOS images for the 2610-2613 wich contain at least Decnet Phase IV and IPv6. It was generated using the Cisco Feature Navigator. http://tools.cisco.com/ITDIT/CFN/jsp/by-feature-technology.jsp Basically, it boils down to getting an image with either the Enterprise Basic featureset or the IP/IPX/AT/DEC/FW/IDS PLUS. Cheers, -Florian On Mon, Feb 4, 2013 at 10:15 PM, Cory Smelosky <b4 at gewt.net> wrote: On 4 Feb 2013, at 16:12, Ian McLaughlin <ian at platinum.net> wrote: > Yay. Area 9 tunnel is up: Yup. It's still suffering local packet loss though... > > hub#sh dec nei > Net Node Interface MAC address Flags > 0 9.1023 Tunnel52 0000.0000.0000 A > 0 52.1023 Tunnel50 0000.0000.0000 A > 0 42.1023 Tunnel0 0000.0000.0000 V A > hub#ping 9.1023 > > Type escape sequence to abort. > Sending 5, 100-byte DECnet echos to atg 0 area.node 9.1023, timeout is 5 seconds > : > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 84/92/120 ms > > Ian > > On 2013-02-04, at 1:01 PM, Cory Smelosky <b4 at gewt.net> wrote: > >> >> On 4 Feb 2013, at 15:46, Cory Smelosky <b4 at gewt.net> wrote: >> >>> >>> On 4 Feb 2013, at 15:45, Brian Hechinger <wonko at 4amlunch.net> wrote: >>> >>>> On 2/4/2013 2:58 PM, Cory Smelosky wrote: >>>>> Looks like Brian has to update his firewall to reflect my new IP.;) >>>> >>>> This is not it? >>>> >>>> 75.49.13.19 >>> >>> Interesting, that is the correct one. The VM must've been glitching then. Updating the host VM now to see if I can resolve the 40-60% packet loss issue >> >> --- 10.10.10.7 ping statistics --- >> 50 packets transmitted, 40 packets received, 20.0% packet loss >> round-trip min/avg/max/stddev = 1.605/13.890/62.054/16.173 ms >> >> This was fine before the move to VMWare... >> >>> >>> -- >>> Cory Smelosky >>> http://gewt.net/ Personal stuff! >>> http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project. >>> >> >> -- >> Cory Smelosky >> http://gewt.net/ Personal stuff! >> http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project. >> >> >> >> --- >> Filter service subscribers can train this email as spam or not-spam here: http://my.email-as.net/spamham/cgi-bin/learn.pl?messageid=03EC4DFC6F0E11E29… > -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project.

13 years

Download a PDP-11 w/o Ethernet?

by Paul_Koning＠Dell.com

Others already answered the boot ROM part. As for the protocol, MOP arrived first on DDCMP, and yes, that includes load/dump. If anything, it's primarily load/dump. The Sysid stuff is specific to Ethernet. I think DDCMP MOP also has MOP level loopback, using MOP packets which are different from the 90-00 Ethernet loop protocol. In DDCMP, MOP is a mode ("maintenance mode") -- same basic frame format but it's a datagram service as opposed to a connection oriented service. It's all spelled out in the specs ("maintop" which is MOP, and the DDCMP spec). paul On Feb 4, 2013, at 5:49 PM, Bob Armstrong wrote: An off the wall question that I m sure somebody on HECnet will know was it ever possible to download a boot image (e.g. RSX-11S) to a PDP11 over a DDCMP serial interface (e.g. a DUP/DMR/DMC or whatever)? Kind of like doing MOP over Ethernet, but without the Ethernet. Thanks, Bob

13 years

Re: [HECnet] Re: [HECnet] [HECnet] Re: [HECnet] Issues bringing TOPS-20 UP (again )

by b4＠gewt.net

On 4 Feb 2013, at 18:02, Jordi Guillaumes i Pons <jg at jordi.guillaumes.name> wrote: El 04/02/2013, a les 22:56, Cory Smelosky <b4 at gewt.net> va escriure: Nevermind, Everything's fine after a rebuild of klh10 Or not still lossy This is bizarre. It was fine until the VM host moved to vmware... I have three news for you: 1: It's a known bug (good) 2: It has a workaround (good) 3: You won't like it (baad!) The bug is related with the async timer implementation in KLH10. It has been discussed in the TOPS-20 mailing list and someone (IIRC was the late Mark Crispin himself) said it was not fixable. The relevant details (and the workaround) are here: Ahh. I wonder why the bug just suddenly appeared for me... https://groups.google.com/forum/?hl=en&fromgroups=#!msg/alt.sys.pdp10/xndbq… Now the bad news. The KLH10 idling "device" is based on the asynch timer implementation, and DOES NOT WORK with synch timers. That means KLH10 will use all your available CPU, all the time. There is ANOTHER workaroud for that (I'm using it with my KHL10 simulator running in a rasp-pi). If you are going to use Linux search for a nifty utility called cpulimit. It does just what you think it does :). In a crude way, but it works. Hmm. I think I might look in to that, thanks! Jordi Guillaumes i Pons jg at jordi.guillaumes.name HECnet: BITXOV::JGUILLAUMES -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project.

13 years

Download a PDP-11 w/o Ethernet?

by drb＠msu.edu

Are these ROMs for an M9312 boot/terminator? They weren't on the DMC/DUP card? Correct, they appear to be M9312 ROMs. De

13 years

Download a PDP-11 w/o Ethernet?

by bob＠jfcl.com

Theoretically, three-chip boot ROM sets exist for: Are these ROMs for an M9312 boot/terminator? They weren't on the DMC/DUP card? Thanks, Dennis. Bob

13 years

Download a PDP-11 w/o Ethernet?

by drb＠msu.edu

but I think they're on the list of "not known in captivity". Actually, maybe I spoke too soon. I see bitsavers has the XM ones. http://bitsavers.trailing-edge.com/bits/DEC/pdp11/M9312/ De

13 years

Download a PDP-11 w/o Ethernet?

by drb＠msu.edu

An off the wall question that I'm sure somebody on HECnet will know - was it ever possible to download a boot image (e.g. RSX-11S) to a PDP11 over a DDCMP serial interface (e.g. a DUP/DMR/DMC or whatever)? Kind of like doing MOP over Ethernet, but without the Ethernet. Theoretically, three-chip boot ROM sets exist for: (XL) DECnet DDCMP DL11-E - 23-926A9, 23-927A9, 23-928A9 (XM) DECnet DDCMP DMC11/DMR11 - 23-862A9, 23-863A9, 23-864A9 (XU) DECnet DDCMP DU11 - 23-865A9, 23-866A9, 23-867A9 (XW) DECnet DDCMP DUP11 - 23-868A9, 23-869A9, 23-870A9 but I think they're on the list of "not known in captivity". De

13 years

Re: [HECnet] [HECnet] Re: [HECnet] Issues bringing TOPS-20 UP (again )

by jg＠jordi.guillaumes.name

El 04/02/2013, a les 22:56, Cory Smelosky <b4 at gewt.net> va escriure: Nevermind, Everything's fine after a rebuild of klh10 Or not still lossy This is bizarre. It was fine until the VM host moved to vmware... I have three news for you: 1: It's a known bug (good) 2: It has a workaround (good) 3: You won't like it (baad!) The bug is related with the async timer implementation in KLH10. It has been discussed in the TOPS-20 mailing list and someone (IIRC was the late Mark Crispin himself) said it was not fixable. The relevant details (and the workaround) are here: https://groups.google.com/forum/?hl=en&fromgroups=#!msg/alt.sys.pdp10/xndbq… Now the bad news. The KLH10 idling "device" is based on the asynch timer implementation, and DOES NOT WORK with synch timers. That means KLH10 will use all your available CPU, all the time. There is ANOTHER workaroud for that (I'm using it with my KHL10 simulator running in a rasp-pi). If you are going to use Linux search for a nifty utility called cpulimit. It does just what you think it does :). In a crude way, but it works. Jordi Guillaumes i Pons jg at jordi.guillaumes.name HECnet: BITXOV::JGUILLAUMES

13 years

Download a PDP-11 w/o Ethernet?

by bob＠jfcl.com

An off the wall question that I m sure somebody on HECnet will know was it ever possible to download a boot image (e.g. RSX-11S) to a PDP11 over a DDCMP serial interface (e.g. a DUP/DMR/DMC or whatever)? Kind of like doing MOP over Ethernet, but without the Ethernet. Thanks, Bob

13 years

Re: [HECnet] Re: [HECnet] Issues bringing TOPS-20 UP (again )

by b4＠gewt.net

On 4 Feb 2013, at 16:45, Cory Smelosky <b4 at gewt.net> wrote: On 4 Feb 2013, at 16:38, Cory Smelosky <b4 at gewt.net> wrote: I'm having issues bringing TOPS-20 up tly SJ 0: Status of structure TOPS20: is set: SJ 0: Domestic, Unregulated, Shared, Available, Dumpable SJ 0: [DTE: Bad to-10 BP 0,,0][dte_10xfrbeg: 10cnt left: 4086][dte_10xfrbeg: out of data, no I bit][DTE: Bad to-10 BP 0,,0][dte_10xfrbeg: 10cnt left: 3329][dte_10xfrbeg: out of data, no I bit][DTE: Bad to-10 BP 0,,0][dte_10xfrbeg: 10cnt left: 4086][dte_10xfrbeg: out of data, no I bit][DTE: Bad to-10 BP 0,,0][dte_10xfrbeg: 10cnt left: 332 Is all that gets printed to the console, is that a bad CPU instruction, have I corrupted a binary, or is that a bug in how it handles networking? -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project. Nevermind, Everything's fine after a rebuild of klh10 Or not still lossy This is bizarre. It was fine until the VM host moved to vmware... -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project. -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project.

13 years

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