Re: [Simh] How to access RT11/FIles11 floppy images on Windows?
On 2017-03-18 12:49, Tim Stark wrote: I got and installed DOSBox 0.74. I tried to access my RT11 disk images but PUTR hung up after entered ‘mount rx0: image.dsk’. Years ago I reconstructed an RT-11/Fuzzball disk using dosemu + dosemu-freedos + PUTR. It didn't work interactively and resorted to creating an indirect command file called putr.ini. Running dosemu putr.com then did the job. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] A couple of newbie SimH questions
On 2017-03-06 11:58, Warren Toomey wrote:
I've tried all of the SET CPU IDLE values and I can't find a value that
lowers
the CPU usage below 100%. Is there a compile flag that I need to set?
The
host system is Ubuntu 15.10 and Linux 4.2.0-42-generic.
I guess idle pattern detection missing or broken in simh for the
particular
guest OS. I'll have a look.
and I can happily telnet in. Now I want to set up two SimH instances so
that one DZ line connects the two together. I've read the
vax780_doc.doc
but I can't see how to configure an outbound connection.
This is much better document in the top comment section in
https://github.com/simh/simh/blob/master/sim_tmxr.c
A snippet below. Let me know if that doesn't help.
Line specific tcp listening ports are supported. These are
configured
using commands of the form:
sim> attach MUX Line=2,port{;notelnet}
Direct computer to computer connections (Virutal Null Modem cables)
may
be established using the telnet protocol or via raw tcp sockets.
sim> attach MUX Line=2,Connect=host:port{;notelnet}
Computer to computer virtual connections can be one way (as
illustrated
above) or symmetric. A symmetric connection is configured by
combining
a one way connection with a tcp listening port on the same line:
sim> attach MUX Line=2,Connect=host:port,listenport
When symmetric virtual connections are configured, incoming
connections
on the specified listening port are checked to assure that they
actually
come from the specified connection destination host system.
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Re: [Simh] Reference performance benchmarks
On 2016-12-12 16:34, Johnny Billquist wrote: I would start at CPU idle detection. It seems to be working, but definitely a good place to look at to get more bang(vaxen) for my bucks(cheap x86's/rpi clones). ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Reference performance benchmarks
On 2016-12-12 16:09, Jeremy C. Reed wrote: For VAX-11/780 see the benchmark results and source code from Kashtan's research. AUUGN-V02.4.pdf starting on PDF page 24. And see Joy's followup in AUUGN-V02.3.pdf (PDF Page 60). See http://minnie.tuhs.org/Archive/Documentation/AUUGN While your OS may be different it has numbers for some different systems so may give you some rough estimates. If this code isn't online, it would be nice to make available (maybe put on github and let us know). Oh, I see how I can turn that into a canary and let Travis have a ball with it. This is a great help. (Hopefully someday soonI will get my book completed that has this story.) I think I got a sneak preview of the 386BSD patchkits chapter through the unintended wonders of google cache once. I'm a sure customer and will probably empdapt[1] some of it. [1] emdaptation [em-d-uh p-tey-shuh n] noun 1. the state of being emdapted; running in an emulator. 2. something produced by emulating: an emdaptation of a UNIX history book. Origins: Word play on emscripten, embiggen, emulating, adapting ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Reference performance benchmarks
On 2016-12-12 16:29, khandy21yo wrote: Is your speed problem limited to disk access, or is it also CPU related? Running in a browser might mean that the disk access is going through the network, which can slow it down excessively, There are several bottlenecks on a system, like slow disks, that don't effect other aspects, like instruction speed, it's important to determine exactly where the speed limits exists. CPU instruction speed, excessive swapping, disk bandwidth, terminal baud water, . .. They can all be a problem, and it can be more than one at a time. For the browser case I have the feeling it is guest device I/O from one to the other that is taking way too long, but the real problem is that I'm not able to gauge if I am going way over time accurate speeds and even want to bother optimising. For the case where I am spawning vaxen on a small small box I'm CPU bound host wise, and not sure when to stop. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Reference performance benchmarks
On 2016-12-12 14:34, Paul Koning wrote: On Dec 12, 2016, at 2:13 PM, Jacob Goense <d...@xs4all.nl> wrote: I'm running simh in rather tight corners. Mostly VAX/780 and PDP-11/70 with V6 or BSD. Simh runs in a browser, or, I have (too) many of them on underpowered Asus Eee PC's. Any tips on how I can check if I have taken things too far? Depends on what you mean by "too far". Do you want SIMH to run as fast as, or faster than, the real hardware? If so, running, say, the PDP11 simulator on a 780 is probably "too far". But it may be ok for the 1620 emulator. If by "too far" you mean "not useable", that depends on your tolerance. I don't mind if things run faster. In case a user runs into usability issues I want to be able to gauge whether it is because simh is running significantly slower than the real hardware or just time accurate. People have run PDP-11 emulators on a PDP-10 (MIMIC). There's a document describing an Electrologica X8 emulator that runs on its predecessor the X1 -- a machine with no floating point hardware and a typical instruction time around 50 microseconds. So the emulation runs at about 4-8 ms per emulated integer instruction, substantially slower for float. But it was (apparently) used for initial development of substantial programs such as an ALGOL compiler. It's all a question of what you consider reasonable. For development purposes I'd run a pdp11 simh on a vax simh in a browser, wait hours for it to get something done and find that more than reasonable. Just that, when opening these Droste effects of emulators in emulators in emulators in browsers to a wider public, I want to be able to say that it is not that far off from the original speed. I'm relatively young (from 1975) and lack the experience to have even the faintest clue what these speeds are. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
[Simh] Reference performance benchmarks
I'm running simh in rather tight corners. Mostly VAX/780 and PDP-11/70 with V6 or BSD. Simh runs in a browser, or, I have (too) many of them on underpowered Asus Eee PC's. Any tips on how I can check if I have taken things too far? Like minimum values to look for in SHOW CLOCK, or any tools I can run that can be referenced against same on real kit. I run into the same question on the I/O end. During the installation of v6 I can do dd if=/dev/mt0 of=/dev/rk1 bs=2048 count=1000 skip=1025 and it is done in a second on machine that is doing nothing else. With simh running in a browser on a small busy machine it can take up to an hour. I have no idea how to gauge how far this is off from real kit. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] RT-11 source
Oh, and of course there is Fuzzball, the early IP/TCP and NTP testbed for the PDP-11 using RT-11 for build and boot. Later on it ran production timeservers and the first NSFNet backbone. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] RT-11 source
On 2016-10-22 17:46, Jacob Goense wrote: I vaguely recall lore about 4.x BSD stuff being ported to the PDP-11 ending with the machine being thrown out of the window. Citations are welcome, or maybe this should be crossed over to TUHS. Found it. https://www.youtube.com/watch?v=bVSXXeiFLgk (31:50 - 33:33) ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] RT-11 source
On 2016-10-22 12:55, Al Kossow wrote: On 10/22/16 7:44 AM, Ray Jewhurst wrote: I have an idea for project to teach my self rudimentary OS design and I would like to use RT-11 as an example Did anyone ever port MINIX to the PDP-11? No way. I vaguely recall lore about 4.x BSD stuff being ported to the PDP-11 ending with the machine being thrown out of the window. Citations are welcome, or maybe this should be crossed over to TUHS. ObSimh: For the 2012 retro challenge I ported an IRC client to to 2.11 BSD, about half way I seriously considered adding a window emulator for simh instead. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] SimH on Raspberry Pi - out of date?
On 2016-03-17 14:27, Gregg Levine wrote: If I remember correctly it would be up to the maintainer of the package as shown on the appropriate page on the Debian site. You'd need to check there to see who that is, and then follow their procedures for requesting the update. Might be a nice gesture to maintainers if a certain commit in this eternal Beta could be dressed up for dinner. eg. - has documentation and code mostly in sync - is known to build where it should - warranty void instantly ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] KS10 IMP documentation
On 2016-02-29 23:26, Robert Armstrong wrote: But, be aware that all the IMP software we have is from the early 70s and predates TCP. I don’t know if there was ever any OS for the KS10 that supported NCP networking, but if there was then it’s possible you could get something running. Flag day is clear, IMPS were instructed to drop NCP based on the (long) leader fields 65-72. Going backwards things blur. Can this early IMP code switch IP in theory? ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] KS10 IMP documentation
On 2016-02-29 22:20, SPC wrote: Hum... not sure about this, but someone talked here some years ago about a modification of the SIMH Honeywell simulator to convert it in one IMP. I assume that he had some kind of BBN IMP code. I'm not sure if this project would be limited to tray to simulate the original ARPANET token ring limited to the IMPs or there was some other goals to reach. An example: modify another simulator adding to it a simulation of one device like this one (AN22) making it to talk with the IMP. As I said this was a post from years ago. Perhaps was Bob Armstrong who talked about it but I'm not sure at all. Yes, it was him. See also simh/H316/h316_hi.c: The host interface is one of the BBN engineered devices unique to the ARPAnet IMP. This is the famous "1822" card which connected each IMP to a host computer - a DECSYSTEM-10, an SDS Sigma 7, an IBM 360/90, a CDC6600, or any one of many other ARPAnet hosts. The idea is to simulate this interface by using a TCP/UDP connection to another simh instance emulating the host machine and running the ARPAnet host software. Presently the details of the host interface card are not well known, and this implementation is simply a place holder. It's enough to allow the IMP software to run, but not actually to communicate with a host. The IMP simply believes that all the attached hosts are down at the moment. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] VT100 Color of text
On 2016-01-09 17:58, Will Senn wrote: A little more on topic and I've asked this question differently in the past, but now I think I have a better formulation of the question - are there SimH compatible video terminal simulators available and listed somewhere? For a vt220 I just fire up putty with http://sensi.org/~svo/glasstty/ at the correct font size. I have a patched version of the font with a proper none breaking space for use with a javascript terminal. Still woking on getting the pinch/bulge right. If anyone has and ADM-3a and willing to take pics I'm willing to try to make it into a font. I have the ROM dumps. There is a BBN Bitgraph in MESS.. https://fotki.yandex.ru/next/users/shattered/album/137130/view/700597 ..don't ask me how to connect it to anything though, I rarely play with MESS. I still have a hankering to play a graphic version of lunar lander or spacewar on my Macbook Pro on an OS that I administer :). Doubt I'll ever beat this rendition http://www.masswerk.at/spacewar/ ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] SIMH console settings for escape sequence support
On 2015-12-31 21:44, Random832 wrote: Speaking of escape sequences, for systems that don't use terminals (i.e. Windows) it might be nice for simh to have built-in emulation for something simple like a VT-52 or an ADM-3A. Or maybe have a telnet console. Terminal emulators do a good job here. What I'm still looking for is something that accurately behaves like a KSR-33. With a quick hack I got a javascript terminal emulator to look like it, but that's as close as I got. http://dugo.home.xs4all.nl/ksr33.png (yes, I know they rarely came with a pipe) ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] VMS/VDE: Almost there
On 2015-10-07 17:22, Johnny Billquist wrote: I believe there was also DECnet for SunOS, and I know there was DECnet for Symbolics Lisp machines. And people have implemented DECnet for Linux, and I'm sure there are other examples out there as well... According to its HELP.TXT even Mills' fuzzballs once waded through DECnet swamps. Unfortunately I have never been able to locate the corresponding NSP.* files to actually build such a DECnet gateway. The NSFnet Phase I backbone was actually TCP/IP running over DDCMP, DEC was everywhere. ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Cutler Unix
On 2015-03-04 23:57, Dave Osborne wrote: Don't forget that DEC did not adopt Unix because of Ken Olsen snake oil. The IT world could have been a totally different place When was Unix put up to adoption? ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] mac lisp on pdp-10?
on a related note, it seems that its.os.org is no longer on the internet, but is still listed as the URL to find ITS images, ie on trailing-edge's page for the klh10 emulator: http://klh10.trailing-edge.com/ is anyone aware of a mirror of the its.os.org files or other sources for ITS images? Does this help? ftp://ftp.trailing-edge.com/pub/ftp.its.os.org/ai/ ftp://ftp.trailing-edge.com/pub/ftp.its.os.org/mc/ ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Initializing disks under RT11
Nope, still getting size function failed. [ken@raptor Disks]$ dd if=/dev/zero bs=1024 count=5120 of=rt11dat.dsk 5120+0 records in 5120+0 records out 5242880 bytes (5.2 MB) copied, 0.0115284 s, 455 MB/s [ken@raptor Disks]$ pdp11 rt11.cmd PDP-11 simulator V3.6-1 Create bad block table on last track? [N] What if you give a Y the first time Simh asks if it can write on the last track? ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Initializing disks under RT11
Anyone know how to initialize a disk under RT-11 with simh? I can format and initialize RK05 images, but INITIALIZE fails on RL01 with ?DUP-F-Size function failed. Assuming ftp://minnie.tuhs.org/UnixArchive/PDP-11/Distributions/research/Dennis_v6/v6doc.gz is a RK05 image: root@mercury:/museum/fuzzball/a# cat 5.ini set ptr dis set ptp dis set lpt enabled set dz DISABLED set RK ENABLE set HK dis set rx dis set rp dis set tm dis set tq dis set xq dis set tti 8b set tto 8b set cpu 11/73 128K set rl0 writeenabled set rl0 rl02 attach rl0 rl0.dsk set rl0 badblock SET RK0 WRITEENABLED ATTACH RK0 v6root boot rl0 root@mercury:/museum/fuzzball/a# ls -l v6root -rw-r--r-- 1 root root 2048000 Dec 20 23:29 v6root root@mercury:/museum/fuzzball/a# pdp11 5.ini PDP-11 simulator V3.8-1 Disabling CR Overwrite last track? [N] RT-11FB V05.03 .INITIALIZE/NOQUERY RK: .DIR RK: 0 Files, 0 Blocks 4762 Free blocks . ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Initializing disks under RT11
Anyone know how to initialize a disk under RT-11 with simh? I can format and initialize RK05 images, but INITIALIZE fails on RL01 with ?DUP-F-Size function failed. Assuming [snip previous reply after misreading] Here is for the RL01. root@mercury:/museum/fuzzball/a# dd if=/dev/zero of=rl1.dsk bs=1024 count=10230 10230+0 records in 10230+0 records out 10475520 bytes (10 MB) copied, 0.133831 s, 78.3 MB/s root@mercury:/museum/fuzzball/a# ls -l rl1.dsk -rw--- 1 root root 10475520 Dec 21 00:00 rl1.dsk root@mercury:/museum/fuzzball/a# cat 01.ini set ptr dis set ptp dis set lpt enabled set dz DISABLED set RK dis set HK dis set rx dis set rp dis set tm dis set tq dis set xq dis set tti 8b set tto 8b set cpu 11/73 512K attach LPT lpt.txt set rl1 writeenabled set rl1 rl02 attach rl1 rl1.dsk set rl0 writeenabled set rl0 rl02 attach rl0 rl0.dsk set rl0 badblock set rl1 badblock boot rl0 root@mercury:/museum/fuzzball/a# pdp11 01.ini PDP-11 simulator V3.8-1 Disabling CR Overwrite last track? [N] Y Overwrite last track? [N] Y RT-11FB V05.03 .INITIALIZE/NOQUERY DL1: .DIR DL1: 0 Files, 0 Blocks 20382 Free blocks . [CTRL-E] Simulation stopped, PC: 152656 (BEQ 152676) sim quit Goodbye root@mercury:/museum/fuzzball/a# ls -l rl1.dsk -rw--- 1 root root 10478080 Dec 21 00:00 rl1.dsk ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
Re: [Simh] Initializing disks under RT11
Anyone know how to initialize a disk under RT-11 with simh? I can format and initialize RK05 images, but INITIALIZE fails on RL01 with ?DUP-F-Size function failed. Assuming [snip previous reply after misreading] Here is for the RL01. [snip previous reply after still misreading] Ok, that was for the RL02, sorry for again not getting your question right. Anyway, the answer for the RL01/RL02 disks is, mind the badblocks track. root@mercury:/museum/fuzzball/a# dd if=/dev/zero bs=1024 count=5120 of=rl01.dsk 5120+0 records in 5120+0 records out 5242880 bytes (5.2 MB) copied, 0.0623074 s, 84.1 MB/s root@mercury:/museum/fuzzball/a# cat 1.ini set ptr dis set ptp dis set lpt enabled set dz DISABLED set RK dis set HK dis set rx dis set rp dis set tm dis set tq dis set xq dis set tti 8b set tto 8b set cpu 11/73 512K attach LPT lpt.txt set rl1 writeenabled set rl1 rl01 attach rl1 rl01.dsk set rl0 writeenabled set rl0 rl02 attach rl0 rl0.dsk set rl0 badblock set rl1 badblock boot rl0 root@mercury:/museum/fuzzball/a# pdp11 1.ini PDP-11 simulator V3.8-1 Disabling CR Overwrite last track? [N] Y Overwrite last track? [N] Y RT-11FB V05.03 .INITIALIZE/NOQUERY DL1: .DIR DL1: 0 Files, 0 Blocks 10172 Free blocks . ___ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
