Re: PDP 8e green / lab version rack Ebay
On 8/26/2017 6:52 PM, Anders Nelson via cctalk wrote: LOL those last 15 seconds were a deusey! Let's hope the buyer isn't a movie prop fool. At least they paid if they are. Looks like two serious bids, the 1600 dollar one trumped in the end frenzy, and a final big > 4700 bucks that took it. Wonder what that bid was? thanks Jim
Re: PDP 8e green / lab version rack Ebay
LOL those last 15 seconds were a deusey! On Sat, Aug 26, 2017 at 9:48 PM Anders Nelson wrote: > This is crazy, how is this auction not at $5k already at least? > > On Sat, Aug 26, 2017 at 12:21 AM Adrian Stoness via cctalk < > cctalk@classiccmp.org> wrote: > >> see its down to les then 24 hrs left now wonder what it will go for? >> > -- > -- > Anders Nelson > +1 (517) 775-6129 > www.erogear.com > -- -- Anders Nelson +1 (517) 775-6129 www.erogear.com
Re: PDP 8e green / lab version rack Ebay
This is crazy, how is this auction not at $5k already at least? On Sat, Aug 26, 2017 at 12:21 AM Adrian Stoness via cctalk < cctalk@classiccmp.org> wrote: > see its down to les then 24 hrs left now wonder what it will go for? > -- -- Anders Nelson +1 (517) 775-6129 www.erogear.com
Re: LA-180 ? On Craigslist near Duluth MI
No keyboard, just a few control keys. So letterprinter. Warner On Aug 26, 2017 6:08 PM, "Mike Stein via cctech" wrote: > There were two versions, the Letterprinter (without a keyboard, aka LP100) > and the Letterwriter (with KB, aka LW100); which one is yours? > > - Original Message - > From: "Warner Losh via cctech" > To: "william degnan" ; "General Discussion: > On-Topic and Off-Topic Posts" > Cc: "cctech" > Sent: Saturday, August 26, 2017 6:12 PM > Subject: Re: LA-180 ? On Craigslist near Duluth MI > > > >I have what I think is a LA-100 (letter writer 100 maybe?) that's free to > > anybody that will come and get it, or "free" if you pay shipping > > > > If there's any interest, I'll find out exactly what... I got it when I > > bought my last DEC Rainbow... > > > > Warner > > > > On Sat, Aug 26, 2017 at 3:44 PM, william degnan via cctalk < > > cctalk@classiccmp.org> wrote: > > > >> Looks like it, probably a II > >> > >> Bill Degnan > >> twitter: billdeg > >> vintagecomputer.net > >> On Aug 26, 2017 5:16 PM, "Pete Lancashire via cctech" < > >> cct...@classiccmp.org> > >> wrote: > >> > >> > https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/ > >> 6248628617.html > >> > > >> > Picture #8 in rear right corner > >> > > >> > No association with the seller just passing the info on > >> > > >> >
Re: LA-180 ? On Craigslist near Duluth MI
On 8/26/2017 7:39 PM, Warner Losh via cctalk wrote: On Sat, Aug 26, 2017 at 4:50 PM, John H. Reinhardt via cctalk < cctalk@classiccmp.org> wrote: On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote: https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6 248628617.html Picture #8 in rear right corner And #11. It's got a keyboard and number pad so I'm thinking it's more likely a LA120 DECwriter III Could easily be a DECwrite II as well. It looks just like the one I used in high school and college. Can't tell from the picture though if it has the baud rate selection switches on the left hand side which is a dead-giveaway for it. Warner Picture #8 clearly shows (if you click on it it expands to a larger size) no keypad on the left of the keyboard which is how the LA36/DECwriter II set baud rate and did line and form feeds. The DECwriter III had a "Setup" key above the "Escape" and "1" keys to set baud and other characteristics and LF, FF and other keys above the number row on the right side for forms handling. At least that's how my LA120 keyboard is set up. It's hard to see if those keys are there in picture #8 or #11, but since the left keypad is missing, I'm going to assume they are. John H. Reinhardt
Re: LA-180 ? On Craigslist near Duluth MI
On Aug 26, 2017, at 5:50 PM, John H. Reinhardt via cctalk wrote: > On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote: >> https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html >> Picture #8 in rear right corner > > And #11. It's got a keyboard and number pad so I'm thinking it's more likely > a LA120 DECwriter III > >> No association with the seller just passing the info on > > Picture #9 has a Model 43 Teletype in a row with what looks like an old > mimeograph or electrostatic copier, some early electric typewrite and then an > IBM Selectric of some sort. > > -- > John H. Reinhardt Oh yeah, this joker. I had spoken to him on the phone last month to find out prices on several items (before driving 5 hours) and learned that he was using eBay ASKING prices for almost everything in the store and wouldn't budge. I offered cash and carry after his first round of sales and was fed a line about "the owner" not being interested in selling. I see some of the photos he's using are from before the first sale so who knows what's really left. -C
Re: DECstation 220. Another Impasse
On 2017-Aug-26, at 9:57 AM, Rob Jarratt via cctalk wrote: > I have replaced several parts in the area of the monitor sense circuit, > including the comparator and the buffer it is driving, but the comparator > does not seem to be doing what you would expect. I have reverse engineered > the circuit and I simply don't understand how the circuit can behave in the > way it is behaving. I have posted all the details here: > https://rjarratt.wordpress.com/2017/08/26/decstation-220-monitor-sense-circu > it-problem/ > > Does anyone have any ideas what could be going on? You have some of your reasoning reversed regarding comparator behaviour. Comparators are typically: +in > -in --> output transistor off --> output TRUE / HIGH with pull-up R. The 176 outputs are connected to the comparator -inputs. The two 0V -ins are thus below the +ins at 0.36V and their output transistor will thus be off / not conducting to GND. Of course that doesn't solve the problem, the 3rd, oscillating, -in should be toggling its output transistor and the overall output should be toggling rather than steady +5. Is power good at the 339 supply pins (including gnd)? Is the oscillating 176 output high long enough (pulse width when high) for the frequency response of the 339?
Re: LA-180 ? On Craigslist near Duluth MI
There were two versions, the Letterprinter (without a keyboard, aka LP100) and the Letterwriter (with KB, aka LW100); which one is yours? - Original Message - From: "Warner Losh via cctech" To: "william degnan" ; "General Discussion: On-Topic and Off-Topic Posts" Cc: "cctech" Sent: Saturday, August 26, 2017 6:12 PM Subject: Re: LA-180 ? On Craigslist near Duluth MI >I have what I think is a LA-100 (letter writer 100 maybe?) that's free to > anybody that will come and get it, or "free" if you pay shipping > > If there's any interest, I'll find out exactly what... I got it when I > bought my last DEC Rainbow... > > Warner > > On Sat, Aug 26, 2017 at 3:44 PM, william degnan via cctalk < > cctalk@classiccmp.org> wrote: > >> Looks like it, probably a II >> >> Bill Degnan >> twitter: billdeg >> vintagecomputer.net >> On Aug 26, 2017 5:16 PM, "Pete Lancashire via cctech" < >> cct...@classiccmp.org> >> wrote: >> >> > https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/ >> 6248628617.html >> > >> > Picture #8 in rear right corner >> > >> > No association with the seller just passing the info on >> > >>
Re: LA-180 ? On Craigslist near Duluth MI
On Aug 26, 2017 7:27 PM, "John H. Reinhardt via cctech" < cct...@classiccmp.org> wrote: > > On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote: >> >> https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html >> >> Picture #8 in rear right corner > > > And #11. It's got a keyboard and number pad so I'm thinking it's more likely a LA120 DECwriter III > > >> >> No association with the seller just passing the info on >> > > Picture #9 has a Model 43 Teletype in a row with what looks like an old mimeograph or electrostatic copier, some early electric typewrite and then an IBM Selectric of some sort. > > -- > John H. Reinhardt Yes, looking at the photo it's IMHO an la36 DECwriter II http://www.vintagecomputer.net/digital/DEC-Writer-II.jpg Here is the LA180 http://www.vintagecomputer.net/digital/decprinter-I/digital_decprinterI.jpg
Re: LA-180 ? On Craigslist near Duluth MI
On Sat, Aug 26, 2017 at 4:50 PM, John H. Reinhardt via cctalk < cctalk@classiccmp.org> wrote: > On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote: > >> https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6 >> 248628617.html >> >> Picture #8 in rear right corner >> > > And #11. It's got a keyboard and number pad so I'm thinking it's more > likely a LA120 DECwriter III Could easily be a DECwrite II as well. It looks just like the one I used in high school and college. Can't tell from the picture though if it has the baud rate selection switches on the left hand side which is a dead-giveaway for it. Warner
Re: LA-180 ? On Craigslist near Duluth MI
On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote: https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html Picture #8 in rear right corner And #11. It's got a keyboard and number pad so I'm thinking it's more likely a LA120 DECwriter III No association with the seller just passing the info on Picture #9 has a Model 43 Teletype in a row with what looks like an old mimeograph or electrostatic copier, some early electric typewrite and then an IBM Selectric of some sort. -- John H. Reinhardt
Re: LA-180 ? On Craigslist near Duluth MI
I have what I think is a LA-100 (letter writer 100 maybe?) that's free to anybody that will come and get it, or "free" if you pay shipping If there's any interest, I'll find out exactly what... I got it when I bought my last DEC Rainbow... Warner On Sat, Aug 26, 2017 at 3:44 PM, william degnan via cctalk < cctalk@classiccmp.org> wrote: > Looks like it, probably a II > > Bill Degnan > twitter: billdeg > vintagecomputer.net > On Aug 26, 2017 5:16 PM, "Pete Lancashire via cctech" < > cct...@classiccmp.org> > wrote: > > > https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/ > 6248628617.html > > > > Picture #8 in rear right corner > > > > No association with the seller just passing the info on > > >
Re: LA-180 ? On Craigslist near Duluth MI
The LA180 doesn't have a kybd, and it looks like this one doe. The LA36 has buttons on the left of the kybd. I'm guessing a LA120. Is that a TEK 555 dual beam scope in the window? On Sat, Aug 26, 2017 at 4:44 PM, william degnan via cctalk < cctalk@classiccmp.org> wrote: > Looks like it, probably a II > > Bill Degnan > twitter: billdeg > vintagecomputer.net > On Aug 26, 2017 5:16 PM, "Pete Lancashire via cctech" < > cct...@classiccmp.org> > wrote: > > > https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/ > 6248628617.html > > > > Picture #8 in rear right corner > > > > No association with the seller just passing the info on > > >
Re: LA-180 ? On Craigslist near Duluth MI
Looks like it, probably a II Bill Degnan twitter: billdeg vintagecomputer.net On Aug 26, 2017 5:16 PM, "Pete Lancashire via cctech" wrote: > https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html > > Picture #8 in rear right corner > > No association with the seller just passing the info on >
RE: DECstation 220. Another Impasse
> Just checked and found the missing resistor. I have updated the schematic. Its > value is 340R and that corresponds exactly to the 0.36V reference I measured. > So now the schematic makes sense, but the behaviour does not. > I drew it incorrectly, now fixed with the resistor for the reference voltage in the correct place. Regards Rob
LA-180 ? On Craigslist near Duluth MI
https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html Picture #8 in rear right corner No association with the seller just passing the info on
Re: ULTRIX 4.5 on DECstation won't boot into multi-user mode
On Sat, Aug 26, 2017 at 1:52 PM, Aaron Jackson via cctalk < cctalk@classiccmp.org> wrote: > > >> Thanks for the suggestion - it sounds plausible. If I remember > >> correctly, it asks for the time when you boot up, but I might not be > >> remembering it properly so I'll give it a try soon. > > > > I think you're tilting windmills with that. > > > > PMAG-J apparently isn't related to any of the other turbochannel > > display adapters. Do you have the right Xserver package installed to > > drive it? AFAIK it's the "True Color Server", but I'm not sure what > > the package name is. UDWWSTSER450 or UDWXTXSER450 perhaps. > > > > > > ok > > bear. > > I installed to a fairly large disk so didn't skip any of the Xserver > packages, although for now I've just been trying to boot with a console > attached. So, not so sure if X is the issue. > > I can ping it, but no login prompt appears, just sits there. > > Thanks for your suggestion. > Can you boot in single user and check /etc/ttys to see what terminals are recorded there? Warner
Re: ULTRIX 4.5 on DECstation won't boot into multi-user mode
On Aug 26, 2017, at 12:52 PM, Aaron Jackson wrote: > I installed to a fairly large disk so didn't skip any of the Xserver > packages, although for now I've just been trying to boot with a console > attached. So, not so sure if X is the issue. The installation of the X servers package includes a post-installation script. One of the tasks of that script is to read the current console and set up /etc/ttys with the correct X server invocation. If you installed with a serial console, that wouldn't have given you an X entry in /etc/ttys. You can find the script (*.scp) in /usr/etc/products and run it (actually I forget if it relies on internal state of setld or not -- I think it might in which case running it won't work), or just reinstall the package. Or if you feel up to it, you can extract the X server entry from the script and add it to /etc/ttys yourself. There may be a microcode load task for PMAG-J too, dunno. I think what I'd do is just reinstall the 24-bit X servers package. ok bear. -- until further notice
Re: ULTRIX 4.5 on DECstation won't boot into multi-user mode
>> >> Thanks for the suggestion - it sounds plausible. If I remember >> >> correctly, it asks for the time when you boot up, but I might not be >> >> remembering it properly so I'll give it a try soon. >> > >> > I think you're tilting windmills with that. >> > >> > PMAG-J apparently isn't related to any of the other turbochannel >> > display adapters. Do you have the right Xserver package installed to >> > drive it? AFAIK it's the "True Color Server", but I'm not sure what >> > the package name is. UDWWSTSER450 or UDWXTXSER450 perhaps. >> > >> > >> > ok >> > bear. >> >> I installed to a fairly large disk so didn't skip any of the Xserver >> packages, although for now I've just been trying to boot with a console >> attached. So, not so sure if X is the issue. >> >> I can ping it, but no login prompt appears, just sits there. >> >> Thanks for your suggestion. >> > > Can you boot in single user and check /etc/ttys to see what terminals are > recorded there? > > Warner Hi Warner, This was actually one of the first things I tried - probably should have mentioned it in the original post. It seemed fine. console was enabled, as were the first few tty. Unless the device naming has me confused. I will need to double check this tomorrow. I also commented out the last line which appears to try and start the X login prompt. Thanks for the suggestion, Aaron.
RE: DECstation 220. Another Impasse
> Yes it makes sense that the voltage shouldn't be 5V. I will check later this > evening for other components and compare with the other board too. > > Just checked and found the missing resistor. I have updated the schematic. Its value is 340R and that corresponds exactly to the 0.36V reference I measured. So now the schematic makes sense, but the behaviour does not. Regards Rob
Re: ULTRIX 4.5 on DECstation won't boot into multi-user mode
>> Thanks for the suggestion - it sounds plausible. If I remember >> correctly, it asks for the time when you boot up, but I might not be >> remembering it properly so I'll give it a try soon. > > I think you're tilting windmills with that. > > PMAG-J apparently isn't related to any of the other turbochannel > display adapters. Do you have the right Xserver package installed to > drive it? AFAIK it's the "True Color Server", but I'm not sure what > the package name is. UDWWSTSER450 or UDWXTXSER450 perhaps. > > > ok > bear. I installed to a fairly large disk so didn't skip any of the Xserver packages, although for now I've just been trying to boot with a console attached. So, not so sure if X is the issue. I can ping it, but no login prompt appears, just sits there. Thanks for your suggestion. Best, Aaron.
RE: DECstation 220. Another Impasse
> > FWIW I would expect a voltage rather less than 5V there, otherwise the > comparators will never switch. But your schematic wouldn't produce such a > voltage, so I suspect an error. > Yes it makes sense that the voltage shouldn't be 5V. I will check later this evening for other components and compare with the other board too. > I don't know how easy it is to do it, but it can help to lift the output pins > of the > 3 comparators (desolder them from the PCB) and temporarily add a 4k7 (or so) > resistor from each one to +5V. That way you can see what each comparator is > doing separately. > Unfortunately it is a surface mount device, so while I could possibly do it, it would be difficult. Regards Rob
Re: DECstation 220. Another Impasse
On Sat, Aug 26, 2017 at 7:09 PM, Rob Jarratt wrote: > >> -Original Message- >> From: Tony Duell [mailto:ard.p850...@gmail.com] >> Sent: 26 August 2017 18:39 >> To: r...@jarratt.me.uk; Rob Jarratt ; General >> Discussion: On-Topic and Off-Topic Posts >> Subject: Re: DECstation 220. Another Impasse >> >> On Sat, Aug 26, 2017 at 5:57 PM, Rob Jarratt via cctalk >> wrote: >> > >> > I have replaced several parts in the area of the monitor sense >> > circuit, including the comparator and the buffer it is driving, but >> > the comparator does not seem to be doing what you would expect. I have >> > reverse engineered the circuit and I simply don't understand how the >> > circuit can behave in the way it is behaving. I have posted all the >> > details here: >> > https://rjarratt.wordpress.com/2017/08/26/decstation-220-monitor-sense >> > -circu >> > it-problem/ >> > >> > Does anyone have any ideas what could be going on? >> >> My first worry is that you have measured the reference voltage as 0.36V, but >> according to your schematic, said point has only a resistor to +5V and a >> capacitor to ground. So I would expect it to be close to 5V. >> > > > Thanks, for some reason I was assuming a voltage divider, but of course you > need > *two* resistors for that. I will check to see if I have missed a resistor and > also check > the other board that works better in this area to see what the reference > voltage is there. FWIW I would expect a voltage rather less than 5V there, otherwise the comparators will never switch. But your schematic wouldn't produce such a voltage, so I suspect an error. I don't know how easy it is to do it, but it can help to lift the output pins of the 3 comparators (desolder them from the PCB) and temporarily add a 4k7 (or so) resistor from each one to +5V. That way you can see what each comparator is doing separately. -tony
RE: DECstation 220. Another Impasse
> -Original Message- > From: Tony Duell [mailto:ard.p850...@gmail.com] > Sent: 26 August 2017 18:39 > To: r...@jarratt.me.uk; Rob Jarratt ; General > Discussion: On-Topic and Off-Topic Posts > Subject: Re: DECstation 220. Another Impasse > > On Sat, Aug 26, 2017 at 5:57 PM, Rob Jarratt via cctalk > wrote: > > > > I have replaced several parts in the area of the monitor sense > > circuit, including the comparator and the buffer it is driving, but > > the comparator does not seem to be doing what you would expect. I have > > reverse engineered the circuit and I simply don't understand how the > > circuit can behave in the way it is behaving. I have posted all the details > > here: > > https://rjarratt.wordpress.com/2017/08/26/decstation-220-monitor-sense > > -circu > > it-problem/ > > > > Does anyone have any ideas what could be going on? > > My first worry is that you have measured the reference voltage as 0.36V, but > according to your schematic, said point has only a resistor to +5V and a > capacitor to ground. So I would expect it to be close to 5V. > Thanks, for some reason I was assuming a voltage divider, but of course you need *two* resistors for that. I will check to see if I have missed a resistor and also check the other board that works better in this area to see what the reference voltage is there. Regards Rob
Re: DECstation 220. Another Impasse
On Sat, Aug 26, 2017 at 5:57 PM, Rob Jarratt via cctalk wrote: > > I have replaced several parts in the area of the monitor sense circuit, > including the comparator and the buffer it is driving, but the comparator > does not seem to be doing what you would expect. I have reverse engineered > the circuit and I simply don't understand how the circuit can behave in the > way it is behaving. I have posted all the details here: > https://rjarratt.wordpress.com/2017/08/26/decstation-220-monitor-sense-circu > it-problem/ > > Does anyone have any ideas what could be going on? My first worry is that you have measured the reference voltage as 0.36V, but according to your schematic, said point has only a resistor to +5V and a capacitor to ground. So I would expect it to be close to 5V. -tony
RE: DECstation 220. Another Impasse
I have replaced several parts in the area of the monitor sense circuit, including the comparator and the buffer it is driving, but the comparator does not seem to be doing what you would expect. I have reverse engineered the circuit and I simply don't understand how the circuit can behave in the way it is behaving. I have posted all the details here: https://rjarratt.wordpress.com/2017/08/26/decstation-220-monitor-sense-circu it-problem/ Does anyone have any ideas what could be going on? Regards Rob
Re: More updates
On 8/26/17 7:36 AM, Jay West via cctalk wrote: > For official bitsavers mirrors, rsyncd has been turned back on (it was off > while bitsavers was migrated to the new classiccmp server, and during > testing). A HUGE thank you to Jay for taking the time to do this. I had about 100,000 pages in pdf's in my upload queue, which I took care of yesterday. I've also made a reorganization to bitsavers, breaking what was in 'pdf' into 'computing' 'communications' and 'test equipment' 'computing' is still in a directory called 'pdf' so the change should have minimal impact on the mirrors. There are still some stragglers in there that will get moved to the two new heirarchies as I find them.
More updates
For official bitsavers mirrors, rsyncd has been turned back on (it was off while bitsavers was migrated to the new classiccmp server, and during testing). If you host a bitsavers mirror and have any issues with rsync (you will, if you were using the IP instead of the host name) please let me know asap. Websites hosted by the classiccmp server are being migrated one at a time from the old server to the new server. For most of them, I can adjust DNS (yes, the IP address of the classiccmp server is changing) so the change will be transparent but for a few of them, I ask that the site owners be ready and waiting to change DNS. The disk space allocation for the free hosting vintage computer related websites has been doubled, separately from the increase in disk space for bitsavers. There is actually quite a backlog of people/organizations that have requested free hosting for their vintage computer website and I have had to put them all on hold for a long time due to shortage of disk space. With this increase in disk space, I will be contacting each one soon and saying "if you still want to proceed, I'm ready". If you wanted a free site hosted and I do not contact you within the next 30 days, please reach out to me again. There has always been plenty of available space on our san, but the classiccmp server has had some precarious issues preventing an easy increase in space. I've rectified that by just spinning up a new VM and migrating data. This also gets us on recent versions of freebsd, mailman, apache/php/mysql/etc. As long promised. and if I find enough round-tuits, the list(s) will get recombined into one list again. Not sure I have the motivation to tackle that one, but we'll see. J
Re: way off topic- EXOGEN bone stimulator
Does anyone here know how to reprogram an Exogen bone simulator? I had one of those things from when I broke my leg in a segway accident. Don't remember the brand. My guess was they were IR configured. They won't ever reprogram them or reuse them since it's a cheap to produce medical device and they sell them for huge markup. Check diet, better food resulted in my improvement not the bone stim AFAIK. -- : Ethan O'Toole
