RE: eBay search fail

2018-05-01 Thread Noel Chiappa via cctalk
> From: W2HX > I filter on category "Computers/tablets & Networking." It might not have > shown up in your search if you searching in "Vintage Computing" > category. Oh, I forgot to mention: I always search in 'All Categories' precisely to avoid misfiled entries (like this one). (

eBay search fail

2018-04-30 Thread Noel Chiappa via cctalk
So someone mentioned this to me: https://www.ebay.com/itm/222941705847 Now, the crazy thing is that I religously do a search for "PDP-11" for newly listed items on eBait at least once a day - and this never showed up! I just did a search for sold "PDP-11" items, and it's not showing up there ei

Re: 8085 Dissasembly?

2018-04-19 Thread Noel Chiappa via cctalk
> From: Charles Anthony > discovered that changing the executable would change the behavior -- a > heisenbug. Ooh, love that neologism. Noel

Re: 8085 Dissasembly?

2018-04-17 Thread Noel Chiappa via cctalk
> From: Eric Smith > But then, some of us might be masochists. I think pretty much by definition if you're into vintage computers, you have to be a masochist... :-) Noel

Re: LCM 8/e System Photo makes ZDNet

2018-04-16 Thread Noel Chiappa via cctalk
> From: Paul Birkel > the blinky-lights controller panel top-dead-center :->. Yeah, that's a TC08. I actually have one of those inlays, it's the only original inlay I have. It was the model for the large run of blank inlays (black backing with the holes on the back, but nothing on the fr

Re: To be scrapped in as little as 2 months

2018-04-15 Thread Noel Chiappa via cctalk
> From: Ed Sharpe > wish this was closer! Two words: "ROAD TRIP!!!" :-) (I did Virginia<->Wisconsin to save an -11/84... That was a hike!) Noel

RL01/RL02 emulator needed -- (was Many thanks to Glen's Vintage Computer Info)

2018-04-06 Thread Noel Chiappa via cctalk
> From: Alan Frisbie > I need a controller that emulates the DEC RLV11/RLV12 and RL01/RL02 > drives. From my Google searching, I see a couple that use SD or similar > solid state devices. Err, which RLV11/RLV12 emulators are you seeing? I know of several RL02 emulators - Reinhard

Re: eBay: Anyone need a DLV11-J?

2018-04-05 Thread Noel Chiappa via cctalk
> From: Bill Gunshannon > Caution!! The DSD board has some broken chips and bent pins and all of > them look like they spent time in muddy water. Thanks for catching that. I looked at it, saw that it was a DLV11-J, which I didn't need, and so didn't look any harder. Noel

eBay: Anyone need a DLV11-J?

2018-04-05 Thread Noel Chiappa via cctalk
This is listed under a useless title: https://www.ebay.com/itm/292503681011 But it's (currently) cheap (don't all bid against each other ;-). Noel

Re: RL02 Question

2018-03-31 Thread Noel Chiappa via cctalk
> From: Aaron Jackson > I have tried three controllers, two r/w modules and two servo > controllers. I'm beginning to think the drive is fine and there is a > problem with the RLV21 controller. Err, think you mean RLV12 QBUS controller board, right? Anyway, you've already tried

Re: break on pdp11 serial ports

2018-03-30 Thread Noel Chiappa via cctalk
> From: Sytse van Slooten > digging through the documentation of KL-11 and DL-11 I did find > references to generating a break (bit 0 in the XCSR). But not on how it > would be received. ... How did a DL-11 like interface signal the > reception of a break? As JohnW says, frami

Re: Looking for opinions...

2018-03-29 Thread Noel Chiappa via cctalk
> From: Liam Proven > And yet, 3 generations later Can we please keep _all_ politics off the list? It didn't go so well last time. Noel

Re: R.I.P. Robert T. "Doc" Suding

2018-03-23 Thread Noel Chiappa via cctalk
> From: Al Kossow > The only place I ever saw an Apple I when it was for sale. Don't you wish you'd bought one - and kept it? :-) Noel

Re: PDP-11 DIV instruction lossage

2018-03-19 Thread Noel Chiappa via cctalk
> I'll have to redo my kludgy fix to gmtime() ... I guess I'll have to fix > it for real, instead of my kludgy fix (which extended it to work for > 16-bit results). :-) > ... > And on the -11/23: > Note that the returned 'quotient' is simply the high part of the dividend. H

Re: PDP8/e programmers consoles

2018-03-19 Thread Noel Chiappa via cctalk
> From: Allison >> What about warm white LEDs, though? ... maybe they are available in >> bulb replacement form? > I used a supply of dead bulbs to make mine. a little heat and the glass > goes, a resistor and a 3mm led and good to go. Urr, I'm not up to making them! I was r

PDP-11 DIV instruction lossage

2018-03-18 Thread Noel Chiappa via cctalk
So, I have discovered, to my astonishment, that the double-word version of the DIV instruction on the PDP-11 won't do a divide if the result won't fit into 15 bits. OK, I can understand it bitching if the quotient wouldn't fit into 16 bits - but what's the problem with returning an unsigned quotien

Re: PDP8/e programmers consoles

2018-03-17 Thread Noel Chiappa via cctalk
> From: Allison > you have to pull the panel apart to replace them, gets tiring. Modern > yellow LEDs are nice and bright, and don't burn out. > Less digging in the box is a good thing as over time fumble errors can > hurt it. Agree about replacing lamps - we switched to LEDs

Re: DEC bus edge connectors

2018-03-16 Thread Noel Chiappa via cctalk
> From: Charles Dickman > Does anyone have DEC bus edge connectors they are willing to sell? > I would like to do some OMNIBUS interface prototyping and I need a way > to connect to the bus back-plane. Have you looked through Douglas Electronics' offerings? They have a lot of DEC

Re: radar history

2018-03-16 Thread Noel Chiappa via cctalk
> From: Steven Malikoff > I also have a book 'RADAR How it all began' by Jim Brown ... > incredibly precise recollection of the engineering Wow, thanks for that incredibly valuable pointer. My copy just arrived, and it's fabulous; it documents in great detail a part of the story that

Re: AT&T 3B2 stuff--Calling Seth

2018-03-06 Thread Noel Chiappa via cctalk
> From: Cindy Croxton > I finally found it! Oh, that is so awesome! Thank you for keeping an eye out! (I'm sure somehow it will get saved - Seth, let us know if you do, otherwise we can organize something.) Noel

M837 (KM8-E Memory Extension and Time-Share) available

2018-03-06 Thread Noel Chiappa via cctalk
So I have an M837 (KM8-E Memory Extension and Time-Share option for the PDP-8/E, -8/F & -8/M) available; got it with a group of other cards, and I have no use for it. Anyone want it, and have (or can acquire :-) anything PDP-11ish (boards, mounting hardware, manuals, prints, I'm not picky - althou

QSIC update

2018-03-06 Thread Noel Chiappa via cctalk
Hey, all, a quick update on recent progress. I now have a working prototype to match Dave's (although he's still doing all the real work), and we've made a minor improvement in them (re-wired things so we can use shorter cables to the FPGA daughter-card). I got my indicator panel working, it look

Re: EF50 was Re: radar history

2018-03-04 Thread Noel Chiappa via cctalk
> From: William Donzelli > Germany often gets the short end of the stick when it come to radar > tech in World War 2 For those who are interested in German radar, there's a good book: David Pritchard, "The Radar War: Germany's Pioneering Achievement 1904-45", 1989 which

Re: FTGH: Pair of unknown extender cards

2018-03-04 Thread Noel Chiappa via cctalk
> From: Fritz Mueller > Spring cleaning, Noel? :-) Yeah, sort of! These came with a bunch of PDP-11 boards I bought on eBay, and they're just clutter. More stuff coming soon! Noel

FTGH: Pair of unknown extender cards

2018-03-04 Thread Noel Chiappa via cctalk
OK, another pair of unknown extender cards: http://ana-3.lcs.mit.edu/~jnc/tech/jpg/tmp/LargeExtender.jpg If anyone has a use for one or both, FTGH. They are 17"x10", and the support arms (nice touch) are about 3" long. No identifying marks that I can perceive, alas. The power leads are titled

Re: FTGH: Unknown extender card

2018-03-04 Thread Noel Chiappa via cctalk
> From: Brian Marstella > I have a CPU board with similar format that I bought thinking I'd > eventually figure it out. A couple of people have replied privately telling me it's for a Motorola EXORbus/EXORciser. Noel

Re: FTGH: Unknown extender card

2018-03-03 Thread Noel Chiappa via cctalk
> From: Bob Smith > reminds me of S100 bus That was my first thought, until I counted the pins... Noel

FTGH: Unknown extender card

2018-03-03 Thread Noel Chiappa via cctalk
Hi, I'm not sure what kind of system this extender card: http://ana-3.lcs.mit.edu/~jnc/tech/jpg/tmp/SmallExtender.jpg is for, but if anyone has a use for it, FTGH. It has 2x43=86 contacts. Noel

RX01/RX8/RX11 user's manual for trade

2018-03-03 Thread Noel Chiappa via cctalk
Hi all, I have an extra "RX8/RX11 floopy disk system user's manual" I'd like to trade off for something I'd find useful (anything PDP-11 which I don't already have, preferably). Anyone? Noel

Re: radar history

2018-03-03 Thread Noel Chiappa via cctalk
> From: Jon Elson > if they did air raids over France or Germany, that eventually a plane > with one would get shot down and a magnetron would be obtained in > relatively good shape. So, likely by 1942 it was considered to no > longer be a secret. One was lost near Rotterdam i

Re: radar history

2018-03-03 Thread Noel Chiappa via cctalk
> From: Chuck Guzis > the magnetron was made out to be a super-secret device, yet there's a > clear explanation of it in my 1942 "Radio Handbook". Ordinary magnetrons had indeed been around for a while; they were invented in 1920. The British invention was the _cavity magnetron_, a qu

Re: PDP11 I/O page memory map

2018-03-02 Thread Noel Chiappa via cctalk
> From: Paul Koning > RTI/RTT are used in the debugger, so they need to work in user mode. > They refuse to raise your privilege level, though. I understand that it has uses, but by specifying the 'failure' mode in User mode (when the contents of the current or previous modes is not U

Re: PDP11 I/O page memory map

2018-03-02 Thread Noel Chiappa via cctalk
> From: Jerry Weiss > Typically execution of the RESET instruction in a user program is > treated as a NOP Yeah, that's not documented in most PDP-11 CPU manuals, either. It's one of the things that makes the PDP-11 impossible to virtualize; only HALT and SPL trap, IIRC. M[TF]P[ID] do

Re: PDP11 I/O page memory map

2018-03-01 Thread Noel Chiappa via cctalk
> From: Charles Dickman > So if the I/O page is completely (all processor modes) unmapped is > there any way to recover besides a power cycle? Does the RESET > instruction disable the MMU? Interesting questions! The CPU manuals don't say, about the RE$ET; I just tried it on the /

Re: PDP11 I/O page memory map

2018-03-01 Thread Noel Chiappa via cctalk
> On many of the PDP-11s that page is signified by asserting BBS7 QBUS machines only; the UNIBUS has no equivalent signal. > FYI the microPDP-11/53 is the 11/23+ cpu card Err, no; according to the "MicroPDP11/53 System Supplement Manual" (AZ-GPTAA-MC), pg. 3-1, the CPU card in the /53 is

Re: PDP11 I/O page memory map

2018-03-01 Thread Noel Chiappa via cctalk
> From: Douglas Taylor > Is there a document that describes the bank 7 memory page and what > addresses are reserved for what? Here's one I collated from a large number of DEC manuals: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/UNIBUS_Registers.txt (Ignore the name, it applies to QB

Re: DEC Pro 350

2018-02-26 Thread Noel Chiappa via cctalk
> From: Kurt Hamm > If anyone has any thoughts, I would appreciate it. You probably already know this, but... My sense is that a collector of classic computers has to be able to diagnose and repair at the component level - get in there with an oscilloscope and a set of prints (creating t

Re: Seeking RL02K cartridge

2018-02-21 Thread Noel Chiappa via cctalk
> From: Aaron Jackson > I am wondering if anyone would be willing to sell me an RL02K cartridge > for a sensible price? There are a bunch listed on eBait for not wholly unrealistic prices; I wouldn't buy a bunch there, but it you only need one, for testing... Not sure if any of the on

Re: Why don't you respect the mail threads?!

2018-02-21 Thread Noel Chiappa via cctalk
> From: Grant Taylor > I'm on a list where it seems as if a frequent contributer uses an MUA > that does not send In-Reply-To or References headers at all. It doesn't > even send a User-Agent header. *sigh* That's me, I expect. I used to use a TOPS-20 email reader called MM, and

Re: VCF PNW 2018: Pictures!

2018-02-19 Thread Noel Chiappa via cctalk
> From: geneb > they've got a DPS-8 maintenance/operator/? panel ... It's fully > operational and is connected via some magic hardware to a Raspberry Pi > running a Multics emulator. Technically it's an H6180; the DPS-8 is a later generation of hardware in the same family. More he

Re: Bendix G-15 [was: Re: VCF PNW 2018: Pictures!]

2018-02-19 Thread Noel Chiappa via cctalk
> From: Al Kossow >> On 2/18/18 12:20 PM, Brent Hilpert via cctalk wrote: >> ... his 709 went to the CHM. Anything else of the big stuff? > the 7094 and 650 A 7094? Neat! Very historic machine. I wonder if it would be possible to fabricate the extras needed to run CTSS on it...

Re: PDP 11/05 - looking for help

2018-02-12 Thread Noel Chiappa via cctalk
> From: Dave Wade > Or pick up the signals from the wire wrap I think the OP's approach - disable the on-board console - is probably best: that port is limited to 2400 baud, and with DL11's being a dime a dozen (OK, I exaggerate a bit, but only slightly - they're available for about $25).

Duplicate PDP-11 fiche FTGH

2018-02-12 Thread Noel Chiappa via cctalk
So I bought some of those fiche that that eBay seller had, for publications I couldn't locate (either physical, or online), but now that I have a complete set of fische, the duplicates aren't any use. So, if anyone has a use for them, let me know, FTGH: They are: BA11-N Tech Manual BA11-N Use

Re: PDP 11/05 - looking for help

2018-02-12 Thread Noel Chiappa via cctalk
> From: sop0h > I read in somebodies note about jumpers @W1 and W2 on the M7261F that I > have. Apparently cutting one of these disables the onboard uart and > will allow me to put in a serial card. Yes, W1. And it's not cutting, it's inserting. > I cant find the jumpers.

Re: How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

2018-02-11 Thread Noel Chiappa via cctalk
> From: Grant Taylor > I've had plenty of things that I've found and referenced over the years > that have disappeared from where I knew it was. Ah, bit rot - the scourge of the Web. Thank G-d for the Internet Archive! Although at least one major list archive had been marked to exclu

KDF11-B ROM machine-readable source

2018-02-11 Thread Noel Chiappa via cctalk
Is the code for the KDF11-B ROMs available in machine-readable source anywhere? I looked with Google, but couldn't find anything. Eventually I recalled having seen it in the fiche, which was better than nothing (disassembling something that size to see how it worked was, ah, unappealing, shall we

Re: How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

2018-02-11 Thread Noel Chiappa via cctalk
> From: Terry Stewart > If I had to go to that extent of writing it as a robust, referenced, > refereed, definitive technical article, I probably wouldn't bother. Sure. Neither would I. But how is this relevant to the CHWiki question? Noel

Re: Reading a PDP-11 RL02: Anyone Around the U.S. West Coast?

2018-02-11 Thread Noel Chiappa via cctalk
> From: Bill Degnan > What is the OS of the disks, what system was this disk used to > create/save files to the RL02? Doesn't really matter, does it, as long as the bits can all be read off the pack into a file? Once it's in a file, the appropriate OS, running in a simulator (and mos

Re: How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

2018-02-11 Thread Noel Chiappa via cctalk
> From: Grant Taylor >> people are more likely to find it, when they're looking for info on a >> topic, if it's part of something like the CHWiki, than they are on >> individual Web sites. > I question the validity of it. It wasn't just supposition on my part; as I had mentio

Re: Microfiches on Ebay

2018-02-10 Thread Noel Chiappa via cctalk
> From: Mattis Lind > Many are already available online but some I cannot find. Which ones are you missing? I'm curious to see if my set has them. Noel

Re: How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

2018-02-10 Thread Noel Chiappa via cctalk
> From: Grant Taylor cctalk at gtaylor.tnetconsulting.net > Sorry if this comes across wrong. ... I'm replying in an attempt to > provide a counter point for a discussion of reality. So please don't > take this as an attack on you, or your laudable appeal. No problem! > When

Re: How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

2018-02-09 Thread Noel Chiappa via cctalk
> From: Terry Stewart > http://www.classic-computers.org.nz/blog/2018-02-05-USB-in-MS-DOS-and-Win98.htm > Hopefully the article will be useful to others who might want to do > this. Hi, can I appeal to you (and everyone else who writes up these kinds of notes) to put this stuff

Trouble installing 4.3 BSD+NFS Wisconsin Unix

2018-02-05 Thread Noel Chiappa via cctalk
Can anyone help 'Darkstar' with this: http://gunkies.org/wiki/Talk:Installing_4.3_BSD%2BNFS_Wisconsin_Unix Noel

Re: MACSYMA classic

2018-02-03 Thread Noel Chiappa via cctalk
> From: Lars Brinkhoff > notes on his progress are here: > https://github.com/PDP-10/its/issues/284 Ah, that sounds pretty good. The ability to re-create source, given the FASL, will really help. > In 1982 MIT licensed Macsyma to Symbolics, but also made it available > to the

Re: MACSYMA classic

2018-02-02 Thread Noel Chiappa via cctalk
> From: Lars Brinkhoff > Right, we haven't found sources for everything in Macsyma. Ow. How much, very roughly, is missing (if you happen to know) - 5%, 50%? > I'd say we're lucky to have it running at all Good point! Noel

Re: MACSYMA classic

2018-02-01 Thread Noel Chiappa via cctalk
> From: Lars Brinkhoff > It's frankensteined together from a mix of source and FASL files FASL? So some of the sources are apparently gone? Noel

Re: DL10 documentation

2018-02-01 Thread Noel Chiappa via cctalk
> From: Phil Budne > FWIW, Found these bits > ... > Those bits and others can be found Excellent archaeology! With these, and the ITS sources (for which we have both the -10 and -11 sides), the register definitions in the early PDP-10 CPU manual, and the prints, it should be possi

Re: Foonlies

2018-02-01 Thread Noel Chiappa via cctalk
> From: Rich Alderson > I'm going to disagree with the history Al posted, because Dick himself > told me the story. What was the history according to Dick, if you recall? Would he still be available, to write it as he saw it down himself? Noel

Re: QSIC update - v6 Unix boots and runs

2018-01-29 Thread Noel Chiappa via cctalk
> From: David Bridgham > Our plan is to produce a Unibus board as well, we just chose the QBUS > first. For no particularly strong reasons; I had working QBUS machines, and prototyping cards, etc, etc. > (actually, this should work with Q18 QBUS systems as well) Goodness, never

Re: QSIC update - v6 Unix boots and runs

2018-01-29 Thread Noel Chiappa via cctalk
> From: David Bridgham > today we booted v6 Unix successfully for the first time. As in, the OS image was loaded from the SD card, then started up using only the SD card for 'disk'. So this is a pretty major milestone. It's been a long road (I just looked, and we started on this in the su

Re: A couple of RL02 questions

2018-01-29 Thread Noel Chiappa via cctalk
> From: Marc Howard > All the unit has is a thin rail on both sides that is riveted to the > unit. It looks like chassis slides were there originally. Does anyone > have either the DEC part # for the slides I sent these to the list a while back, and never added them to the CHWiki

Re: ultrasonic cleaning for disk heads

2018-01-28 Thread Noel Chiappa via cctalk
> From: Mark J. Blair > I have a single decpack cartridge ... It's marked "decpack 2200 BPI-12" > and has 12 sector notches in the hub. Does that mean that it was most > likely used with an RK05 drive in a PDP-11 system? Yes. > I hope that I can procure a matching drive for i

Re: ADV11-A vs. ADV11-C and 22-bit Bus

2018-01-27 Thread Noel Chiappa via cctalk
> From: Mark Matlock >Any device which uses backplane pins BC1, BD1, BEl, BF1 or DC1, 001, >DEl, OF! Those last are probably typos for "DD1, DE1, DF1". > Several other pins are also tied to ground on that connector such as > BC2, BJ1, and BT1. Yeah, those are all sta

Re: KK11-A / PDP-11/34 Cache module print set

2018-01-27 Thread Noel Chiappa via cctalk
> From: Marc Howard > what's the difference between a KK11-A and KK11-B? KK11-A -> -11/34 KK11-B -> -11/44 Noel

Re: RK05 rear filters/brackets

2018-01-27 Thread Noel Chiappa via cctalk
> From: Fritz Mueller > My restored RK05 drives are missing their rear air filters (the ones that > cover the back of the card cage). The formal DEC name is "prefilter" (since the air that comes in here goes through the cards, and the air blower, and then through the absolute filter o

Re: KK11-A / PDP-11/34 Cache module print set

2018-01-26 Thread Noel Chiappa via cctalk
> From: Mattis Lind > I have now scanned the MP00574 / KK11-A printset I have received. Thank you very much for doing that! Those prints were one of the main missing PDP-11 print sets. > Hope the quality is good enough. It looks good to me. Noel

Re: Keyboard "enthusiasts"

2018-01-24 Thread Noel Chiappa via cctalk
> From: TeoZ > mouse (optical mice are better then the old ones with balls). I even > keep old ball mice around ... and those do wear out) Huh? I've got old ball mice I've been using for years; they don't wear out. The wires do get flaky after a long period of use (at which point I st

eBay: PDP-11/34 chassis available

2018-01-24 Thread Noel Chiappa via cctalk
So this lot: https://www.ebay.com/itm//192436422371 claims to be an -11/04, but there are no boards in it. However... the first backplane (of two) is a DD11-P, which is the backplane for the /34 as well as the /04. And there are /34 CPU boards available on eBait at the moment. Pick up a pair

Re: Ethernet cable (Was: Sun3 valuations?)

2018-01-24 Thread Noel Chiappa via cctalk
> From: Chuck Guzis > On 01/23/2018 04:04 PM, Al Kossow via cctalk wrote: >> they mention they used CATV technology (where the vampire taps come >> from) > Wasn't that ChaosNet? The CHAOS net (capitalization varied, but original docs usually use two words) hardware did use th

Re: Ethernet cable (Was: Sun3 valuations?)

2018-01-23 Thread Noel Chiappa via cctalk
> From: Paul Koning > The nominal OD of RG-8/U is .. within spec for Ethernet cable. Oh, OK. I was just used to the 10Mb cable we used being slightly larger than the 3Mb cable we used. > Also, Ethernet requires a solid inner conductor (for the tap) while > RG-8/U may come strande

Re: Ethernet cable (Was: Sun3 valuations?)

2018-01-23 Thread Noel Chiappa via cctalk
> From: Grant Taylor > I can fairly clearly see the RG-8/U on the side of the cable that David > is holding ... Sure, there was probably a better alternative that came > along after, with better shielding and marking bands. You keep mixing up the 3 Mbit and 10 Mbit. _They were no

Re: Keyboard "enthusiasts"

2018-01-23 Thread Noel Chiappa via cctalk
> From: Chuck Guzis > Really, is this any worse than the gold bugs scrapping whole systems > for the prospective precious metal content? Well, the latter are presumably in it as a business, whereas it seems these people do it for 'fun'. Now there's an idea: perhaps we could convince

Re: Ethernet cable (Was: Sun3 valuations?)

2018-01-23 Thread Noel Chiappa via cctalk
> From: Grant Taylor > According to the following page, it was not RG-8 cable ... As such it > was purpose built. The 10MBit cable, yes; it was custom (you can see 'Ethernet' printed on the chunk in the picture). (I'd forgotten about the black stripes! I'm not sure we really bothered

Re: Apollo Software

2018-01-23 Thread Noel Chiappa via cctalk
> From: Daniel Seagraves > The Saturn software, which is what actually flew from Earth to the > moon, was lost. You mean the Instrumentation Unit on top of the S-IVB stage? That was discarded when the S-IVB and CSM separated shortly after leaving Earth orbit (about 6 hours after launc

Re: Sun3 valuations?

2018-01-22 Thread Noel Chiappa via cctalk
> I just found a piece, I'll put up a photo. Here ya go: http://gunkies.org/wiki/File:3MegEthernetCable.jpg http://gunkies.org/wiki/File:10MegEthernetCable.jpg I should have put a ruler in, for scale. The 3M is about 2/3 of the thickness of the 10M. The center conductor is about 2mm - pr

Re: Sun3 valuations?

2018-01-22 Thread Noel Chiappa via cctalk
> From: Grant Taylor > What makes the copies of papers printed on them special? Well, the Dover was the first device (that I know of) that could print _very_ high-quality graphical/multi-font output, and on ordinary paper. It was also pretty darned fast - a couple of seconds per sheet, II

Re: Sun3 valuations?

2018-01-22 Thread Noel Chiappa via cctalk
So did we ever get an answer to the original question (the value of a Sun3)? All I saw was 'you'd have to pay to recycle them'. > From: Grant Taylor >> Before that, if you were lucky enough to be at Stanford, MIT, or CMU, >> you could use the Dover and Altos that were part of Xerox'

Re: Apollo Software

2018-01-22 Thread Noel Chiappa via cctalk
> From: Paul Koning > I[t] just dawned on me that the subject is Apollo the company bought by > HP, not Apollo the spacecraft. Oh well... Actually, that stuff has all been saved, and run under simulators; there's a very comprehensive site here: http://www.ibiblio.org/apollo/index.h

Re: GT-40 etc.

2018-01-20 Thread Noel Chiappa via cctalk
> From: Al Kossow > vt11 is integrated into the 11/05 backplane on the gt40 Right (although I had forgotten that); I listed the 11/05 separately since I do have data on how much they've been going for - in an attempt to roughly value the lot. The GT40, however, no idea. (I recall one was

Re: New TestFDC Results Registry

2018-01-20 Thread Noel Chiappa via cctalk
> From: Jonathan > if someone wants to sticky this (here or in other forums), I think this > would be a valuable resource for anyone wanting to use ImageDisk on > non-PC formats. How about someone doing an ImageDisk page on the Computer History Wiki; we could include an 'External

Re: GT-40 etc.

2018-01-20 Thread Noel Chiappa via cctalk
> From: Kyle Owen > A tenth the price of the Twiggy Lisa makes that auction look almost > affordable! Final price was $5600. Yeah, whoever bought that got, IMO, a pretty good deal (as I predicted). It's a fair amount of money, but they got a _ton_ of stuff (probably literally :-). I

Re: IP address classes vs CIDR (was Re: Reviving ARPAnet)

2018-01-18 Thread Noel Chiappa via cctalk
> From: Eric Smith > which would respond to ARP requests for non-local addresses and reply > with the router's MAC address (on that interface), specifically in > order to make classful-only hosts work on a CIDR network. Yeah, Proxy ARP (an early RFC here: https://www.rfc-editor

Re: Reviving ARPAnet

2018-01-18 Thread Noel Chiappa via cctalk
> From: Grant Taylor >> It is TCP/IPv4, so it's got compatible headers > Are you referring to the 802.3 Ethernet (vs Ethernet II) frame type No, I meant the IP and TCP headers. Those are end-end; the Ethernet stuff is just a local wrapping, and can be substituted. > I was not aw

Re: Reviving ARPAnet

2018-01-17 Thread Noel Chiappa via cctalk
> From: Warner Losh > I'm curious: does it inter-operate with modern TCP/IP implementations? This just a guess, but 'sort of'? It _is_ TCP/IPv4, so it's got compatible headers, but I don't know if other parts have changed enough to make it not work. E.g. it probably only supports class A

Re: Reviving ARPAnet

2018-01-17 Thread Noel Chiappa via cctalk
> From: Charles Anthony > it was shipped has an "unbundled" product. Ah. I assumed that what had happened was that the set of source files at MIT was just what was in the 'last release', and the NCP code had been discarded by then. I wonder if it's on a backup tape that MIT retained, som

Re: Reviving ARPAnet

2018-01-17 Thread Noel Chiappa via cctalk
> From: Phil Budne > I asked around for v6 Unix with "NCP" code when the IMP code was > resurected, but never found it Yeah, that one was retrieved only recently, when Chuck managed to read an old dump tape I had of the MIT-CSR PWB1 Unix PDP-11. We didn't run NCP on that machine,

Re: Reviving ARPAnet

2018-01-17 Thread Noel Chiappa via cctalk
> From: Lars Brinkhoff > - Multics NCP has not been located. Really? It wasn't in the code dump at MIT? > - Unix? For V6 NCP, we have several versions: http://minnie.tuhs.org/cgi-bin/utree.pl?file=SRI-NOSC http://minnie.tuhs.org/cgi-bin/utree.pl?file=BBN-V6 (The latter include

Re: Which Operating System for my DCC-116 E / Entrex 480 / Nixdorf 620 / Data General Nova 1200 clone ?

2018-01-16 Thread Noel Chiappa via cctalk
> From: Jay West > I'm wary of just sending the tape through the mail for imaging Why? I sent some tapes out to Chuck to get read, those went by USPS, and no problem (well, one had some drop-outs, but they were old and not in great shape; the other one read fine). Noel

Re: GT-40 etc.

2018-01-13 Thread Noel Chiappa via cctalk
> From: Fritz Mueller > Definitely an RK11-C Ah; the dual-wide plug-in connector soldered onto the back kind of threw me a bit! > And it would make sense with the diablo and the RK05 in there. Right, but I wonder if the RK05 is on the same controller as the Diablo, or if the PDP-8 h

RE: GT-40 etc.

2018-01-13 Thread Noel Chiappa via cctalk
> From: Ali > why is there potential for the system to go for insane amounts of money? I'm going to guess that Al had the GT40 in mind. (I wonder if that was named after the car, BTW?) I don't see anything else there that's _that_ desirable - the Diablo (aka RK02/RK03) is pretty rare, and

DECtape madness

2018-01-13 Thread Noel Chiappa via cctalk
So why are reels of DECtape selling for unbelievable prices on eBait? See, e.g. here: https://www.ebay.com/itm/372186744906 and here: https://www.ebay.com/itm/372186745609 I can't believe there are hordes of TU55/TU56 owners out there who desperately need media; so what is it? People who th

Re: GT-40 etc.

2018-01-13 Thread Noel Chiappa via cctalk
> From: Paul Anderson > I wonder what happened to the third rack... And the TU-56... I'm going to disagree with Al, though - I don't think it's going to go for that much, it's 'local pickup only'. That's going to severely limit the bidder pool. Noel

Re: DL10 documentation

2018-01-11 Thread Noel Chiappa via cctalk
> From: Liam Proven > I had a major WTF moment at that. The actress had a prior or parallel > career as an engineer? Why not? Hedy Lamarr: https://en.wikipedia.org/wiki/Hedy_Lamarr invented spread spectrum communications! :-) > From: Dave Mitton > I could ask John Shriv

Re: DL10 documentation

2018-01-11 Thread Noel Chiappa via cctalk
> I'm to[o] busy right now to dig back through my ancient records (paper > and email) to find details So while I didn't have time to do either of these (my Proteon email, if I still even have it, will be on a magtape I'd have to get Chuck to read; and the paper records are mixed in with a

Re: DL10 documentation

2018-01-10 Thread Noel Chiappa via cctalk
> From: Paul Koning > That may be the story, but I don't believe it. Well, I was right there - I was the chief architect of the Proteon router product, for which John Moy worked, and was the person who pushed John into doing OSPF (he didn't think he knew enough). I'm to busy right now to

Re: DL10 documentation

2018-01-10 Thread Noel Chiappa via cctalk
> From: Paul Koning > That was then adopted by OSI as IS-IS, and further tweaked to become > OSPF. Err, no. OSPF was not a descendant of IS-IS - it was a separate development, based mainly on the ARPANET's original link state routing. (I can't recall if John Moy and I took a lot from

Re: DL10 documentation

2018-01-10 Thread Noel Chiappa via cctalk
> From: Phil Budne > ISTR the DTE was a DMA interface, not memory mapping like the DL10 I don't know either; I could probably work it out from looking at the DTE documentation, which I'm too lazy/busy to do... :-) > I also seem to recall that MC was designated as a "1080" which the a

Re: DL10 documentation

2018-01-09 Thread Noel Chiappa via cctalk
> From: Phil Budne > simulating the DL10 so you can run TVs would REALLY be bringing back a > lost artifact!! The Knight TV's were connected through the Rubin 10-11 interface, not a DL10. > I'm pretty sure DN87S was a DN87 front end attached to a (KL) DTE > (Ten/Eleven) inter

Re: DL10 documentation

2018-01-09 Thread Noel Chiappa via cctalk
> From: Lars Brinkhoff > Specifically, the DC76 supported by ITS. >> The DL10 was used in two DEC system products, the DC76 Asynchronous >> Communication System, and the DN87 and DN87S Universal Communication >> System Front Ends. I couldn't find any documentation on the forme

Re: DEC quad board rack

2018-01-09 Thread Noel Chiappa via cctalk
> From: Pontus Pihlgren > Thank you for sharing Noel. Well, I thought people might find it useful. Over time,I've made a variety of shelf designs to hold my boards, searching for something that worked really well, and I liked this one so much I thought it was worth passing it on. In fact

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