[cctalk] Re: Drum memory on pdp11's? Wikipedia thinks so....

I recall around 1980, the "A" machine at Purdue University Electrical Engineering, a PDP-11/70 running Version 7 Unix had a RS04 drum drive used for swap. It was getting long in the tooth and when a power failure occurred, someone would have to get a wrench to help spin it up as the head

[cctalk] Re: Odd IBM mass storage systems

On 4/13/24 12:20, Paul Koning via cctalk wrote: On Apr 12, 2024, at 9:49 PM, ben via cctalk wrote: On 2024-04-12 7:23 p.m., Paul Koning via cctalk wrote: On Apr 12, 2024, at 5:54 PM, CAREY SCHUG via cctalk wrote: ... my favorite terminal 3190 that was neon gas, so monochrome, but could

[cctalk] Re: oscilloscopes

This one: https://scopeclock.com/ You can see the connected arcs in the pic on the main page. I built an older model years ago and it is still running... --tom On 4/4/24 15:21, Adrian Godwin via cctalk wrote: On Thu, Apr 4, 2024 at 8:36 PM Paul Koning via cctalk wrote:

[cctalk] Re: oscilloscopes

I have a pair of CDC6600 console CRTs (~12" diameter electrostatic deflection vector), I've been working on "restoring" a console which I salvaged from Purdue surplus many years ago, but have kind of stalled on at present and it takes up a significant amount of space. If someone would like to

[cctalk] Re: VCFMW vendor tables

On 8/30/23 11:25 AM, Seth Morabito via cctalk wrote: On Wed, Aug 30, 2023, at 7:26 AM, William Donzelli via cctalk wrote: All the VCFMW info is on the Discord server. I swear to God, Discord will be the end of the open Internet, it's where information goes to die. I hate it with every fiber

[cctalk] Digilent Coolrunner-II eval kit?

I am looking for a Digilent Coolrunner-II evaluation kit. If anyone has one they would be willing to part with, please let me know... --tnx --tom

Re: Sun-2 and Sun-3 mice (eBay)

Located. It was actually sold for Prime Computer and is black, but is new in box with pad. Mouse Systems MSC 401162-019/B with the 6 pin RJ11ish connector that I believe was used on Sun3 systems. Let me know you address if you are interested. --tom On 10/26/21 9:45 AM, Ethan Dicks via cctech

Re: Sun-2 and Sun-3 mice (eBay)

I may have a sun3 mouse/pad you can have... I'll look. --tom On 10/26/21 9:45 AM, Ethan Dicks via cctech wrote: On Tue, Oct 26, 2021 at 2:43 AM r.stricklin via cctech wrote:

Re: Xerox 820/II 8/16 Prom/Eproms ( Masters ) on e-bay

On 8/11/21 10:18 AM, Mark G Thomas wrote: > Hi Tom, > > On Wed, Aug 11, 2021 at 09:37:24AM -0500, Tom Uban wrote: >> I have a Xerox 820. I don't know how to tell if it is a -II or not. It is >> marked as U05-013264 September 1984. > You have an 820-II; the original 820 onl

Re: Xerox 820/II 8/16 Prom/Eproms ( Masters ) on e-bay

l from the outside. Bezel color is not always a 100% indicator. > > Floppies are at least easy for them! If no one else can do it, ping me and I > can run off a set. > > Thanks, > Jonathan > > ‐‐‐ Original Message ‐‐‐ > > On Wednesday, August 11th, 2021 at

Re: Xerox 820/II 8/16 Prom/Eproms ( Masters ) on e-bay

I have a Xerox 820. I don't know how to tell if it is a -II or not. It is marked as U05-013264 September 1984. It powers on and boots the monitor. Looking at the PROMs, they are labeled: U33 5.0, U34 5.0, U35 5.0, U36 5.0, U37 4.01, U38 4.01 At some point, I need to ask someone to make me

Re: Help reading a 9 track tape

Hi Jim, I have a 9track drive hooked to my old Sun IPX which may be able to read your tape. I am in Valapraiso IN if you are up for a drive. Best, --tom On 7/30/21 1:02 PM, James Liu via cctech wrote: > Hi, > > I have been lurking for a few years, but thought I'd finally speak up > as I just

Re: Items Wanted

I have a Teletype Model 43 with paper tape reader/punch side unit. It is available and located in NW Indiana if anyone is interested. --tom On 7/13/21 9:23 AM, Monty McGraw via cctalk wrote: > Sounds good! > > On Tue, Jul 13, 2021 at 9:14 AM Eric Moore wrote: > >> Oh wow! I have an ASR33 I

HP DesignJet 600 free for pickup

I have a HP DesignJet 600, in good shape, with a roll of paper, free for pickup in Valparaiso, IN. --tom

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/17/21 6:57 AM, Steve Malikoff via cctalk wrote: > Tom said >> I have a couple different drawing sets for the 11/05 and while some have the >> matching M7260 >> schematic, only the GT40 drawings (I found on bitsavers) has the M7261E >> schematic: >> >>

DEC IC databook?

I was hoping to find DEC under components on bitsavers.org so that I could lookup some unknown to me DEC ICs (e.g. 8266, 8838, 9602). Is there a reference out there? --tnx --tom

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 2:02 PM, Josh Dersch wrote: > > > On Mon, Jun 14, 2021 at 10:34 PM Tom Uban via cctalk <mailto:cctalk@classiccmp.org>> wrote: > > On 6/14/21 3:39 PM, Noel Chiappa via cctalk wrote: > >     > From: Tom Uban > > > >     &g

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 1:45 PM, Tony Duell wrote: > On Tue, Jun 15, 2021 at 4:47 PM Tom Uban wrote: >> On 6/15/21 8:58 AM, Tony Duell via cctalk wrote: >>> On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk >>> wrote: >>> >>>> My KM11s are based on Ton

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 8:58 AM, Tony Duell via cctalk wrote: > On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk > wrote: > >> My KM11s are based on Tony Duell's schematic and if you look, switches S3 >> and S4 are both driving outputs rather than simply switching them to ground, &g

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/14/21 3:39 PM, Noel Chiappa via cctalk wrote: > > From: Tom Uban > > > it has the early version M7261E Control Logic & Microprogram board and > > the later version M7260 Data Paths board > > Ah, I'm glad someone found all that stuff I wrote up there

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

urious to learn how your serial console works.  Mine had a > manufacturing defect that had > to be corrected before input would work. > > --Jay > > On 6/13/2021 1:44 PM, Tom Uban via cctalk wrote: >> I am working on the first of my two 11/05s. Interestingly, it h

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

ies but I wrote up a few notes about my 11/05 variants and > support issues here: >  https://www.vintagecomputer.net/digital/ > <https://www.vintagecomputer.net/digital/>. > > Bill > > On Sun, Jun 13, 2021, 4:44 PM Tom Uban via cctalk <mailto:cctalk@classiccmp.

PDP-11/05 (was: PDP-11/05 microcode dump?)

I am working on the first of my two 11/05s. Interestingly, it has the early version M7261E Control Logic & Microprogram board and the later version M7260 Data Paths board (with circular baud rate selector switch) as described in: http://gunkies.org/wiki/KD11-B_CPU >From the description there,

Re: DEC PDP-11/45 backplane +5 ECO

On 4/24/21 10:28 PM, Noel Chiappa via cctalk wrote: > > From: Fritz Mueller > > > could I ask that you take some closeups around the Mate-n-Locks along > > the top? I'd be very interested to see the board traces and the details > > of the red bus wiring there. > > I had a look at

Re: who collects modems?

; > i do but they often dont seem to work over rtc input of internet boxes > which is a shame > > Le mar. 16 mars 2021 à 16:30, Tom Uban via cctech > a > écrit : > > > Clearing out stuff at my space, I have the following modems: > >

Re: Diversified Technology CAT904 80286 single board PC

alk digest..." > > > Today's Topics: > >   1. VAX rom patches - VAXstation 2000 SCSI boot, KA420 > 1GB boot >       (David Brownlee) >   2. Re: Diversified Technology CAT904 80286 single board PC >       (david raingeard) >   3. Re: PDP-10 I/O notes (Lars Brinkhof

who collects modems?

Clearing out stuff at my space, I have the following modems: NEC UltraLite-Series Image Modem Plus w/box CTS Datacomm 2424 ADA modem w/box Scout Plus External Data/Fax modem w/box Digital DF03 modem Any offers? --tom

Re: [GreenKeys] OT FTGH Xerox 820

On 3/11/21 1:58 PM, Bill Gunshannon via cctalk wrote: > On 3/11/21 10:59 AM, Tom Uban via cctalk wrote: >> I am interested if this is not already spoken for. >> >> --tnx >> --tom >> >> On 3/11/21 9:48 AM, John Foust via cctalk wrote: >>> Richardson,

Re: [GreenKeys] OT FTGH Xerox 820

I am interested if this is not already spoken for. --tnx --tom On 3/11/21 9:48 AM, John Foust via cctalk wrote: > Richardson, TX I assume. > > At 09:42 AM 3/11/2021, John, W9DDD wrote: >> I have a Xerox 820 (rev 2 -II?) that will go to it's happy hunting grounds >> soon unless there is

Re: Flip-Chip selloff

I suspect many of us are in similar situations. I have been collecting and storing my treasures for about 35 years. I even recently moved it all into one nice climate controlled space. (It has mostly all been in climate controlled space, but now it is all in the same space with room to work on

Re: DEC backplane power connectors

The connector shells I ordered arrived and fit my application properly. The part numbers are:   Digikey A106239-ND, TE Connectivity AMP Connectors 1-171196-0, CONN PLUG 6POS MATE-N-LOK NATRL   Digikey A1427-ND, TE Connectivity AMP Connectors 1-480323-0, CONN PLUG 15 POS MATE-N-LOK See attached

Re: DEC backplane power connectors

I have a feeling there are two shell designs for the 6 pin. The one on my DD11-DF that I want to mate has detents in the corners while the catalog picture for the 6 pin on your part number shows a square in the center of the side. I'm pretty sure I've seen that style 6 pin on some of my other

Re: DEC backplane power connectors

I wish I had seen it before I ordered. I may have gotten the wrong 6pin shell. --tom On 1/27/21 11:51 AM, Noel Chiappa via cctalk wrote: > > Are the power connectors on the DEC PDP-11 backplanes (e.g. DD11-DF > > 15pin and 6pin) Molex or other? > > Are they still commonly available?

Re: DEC backplane power connectors

cctalk wrote: > Could you post the part numbers? > > Thanks. > > TTFN - Guy > > On 1/27/21 7:19 AM, Tom Uban via cctalk wrote: >> Thanks much. I think I found the mating plugs I need on the te.com site and >> digikey has them. >> >> --tom >> >>

Re: DEC backplane power connectors

Thanks much. I think I found the mating plugs I need on the te.com site and digikey has them. --tom On 1/27/21 2:05 AM, Mattis Lind wrote: > > > Den ons 27 jan. 2021 kl 06:59 skrev Tom Uban via cctalk <mailto:cctalk@classiccmp.org>>: > > Are the power conn

DEC backplane power connectors

Are the power connectors on the DEC PDP-11 backplanes (e.g. DD11-DF 15pin and 6pin) Molex or other? Are they still commonly available? --tnx --tom

xylogics annex three terminal server

I'm sorting through my stuff and have a Xylogics Annex Three terminal server (w/cables). Complete, but status unknown. Pics upon request. Any interest? --tom

sun microsystems sunfire v100

I'm sorting through my stuff and have two Sunfire V100s. I had one working 20 years ago and don't recall the state of the other. Current status unknown. Pics upon request. Any interest? --tom

Heathkit H89A (was accidentally circuit cellar...)

I'm sorting through my stuff and have Heathkit H89A computer. Last time I messed (20 years ago) it showed signs of life, but was not fully functional. I do have a manual for it. Pics upon request. Any interest? --tom

circuit cellar magazines

I'm sorting through my stuff and have Heathkit H89A computer. Last time I messed (20 years ago) it showed signs of life, but was not fully functional. I do have a manual for it. Pics upon request. Any interest? --tom

DEC VT1000 and VXT2000

I'm sorting through my stuff and have a DEC VT1000, VXT2000 and a few related boards. Condition is unknown. Pics available on request. Any interest? --tom

circuit cellar magazines

I'm sorting through my stuff and have Circuit Cellar magazines issue 54-244 (missing 168 and 210). Is anyone interested in these for $20+shipping? --tom

Re: DEC PDP-8/E wanted

For those interested in a PDP-8 system but don't want the large size/weight and maintenance issues, I built the full set of Spare Time Gizmos SBC6120 (integrated PDP-8), FP6120 (front panel for SBC6120) and IOB6120 (Jim Kearney's multi-function companion board) a number of years ago and would be

Re: Systems Engineering Laboratories - SEL History

I worked at Gould CSD in Urbana on the Powernode Unix kernel from '86-'88 and knew the machines were descendants of SEL machines, but that is about it. The ECL based logic was named "firebreather" for a reason. They were the fastest thing at the time. Being a computer company in Urbana Illinois,

Re: 11/84 print set

On 10/19/20 10:27 AM, Al Kossow via cctalk wrote: > anyone willing to chip in some money to help me pay for this? > https://www.ebay.com/itm/303733340900 I don't have an 11/84, but the bitsavers docs have helped me tremendously over the years. Thank you. Sent $100. --tom

Re: FIRE SALE!

On 10/15/20 3:41 PM, Josh Dersch via cctalk wrote: > On Sun, Oct 11, 2020 at 8:13 PM jim stephens via cctalk < > cctalk@classiccmp.org> wrote: > >> I agree. Most devices are expected to be heated briefly to soldering >> temperatures, not heat soaked at that. >> >> Temperature in this case is much

old data books?

I'm trying to reduce the amount of "stuff" I have and I've been carrying around a significant number of old data books. My plan has always been to have all of the resources I need in my retirement (assuming I get there) to work on and repair the various vintage computing hardware I've also

Re: DEC VRE01 terminal documentation

On 8/13/20 5:04 PM, Antonio Carlini via cctalk wrote: > On 13/08/2020 22:29, Tom Uban via cctalk wrote: >> Thanks Aaron. The DEC display is quite a bit newer than the old Plato >> design. I had one of the Plato >> terminals at one time and am quite familiar with them.

Re: DEC VRE01 terminal documentation

> by 512 pixels.  I'm > guessing this is a 1k by 1k pixel display, which I have seen once or > twice, at SAI in San Diego > in some military displays. > > I know a plasma terminal expert; I've forwarded your message to him. > > paul > > > On Aug 13,

Re: DEC VRE01 terminal documentation

2 by > 512 pixels. I'm guessing this is a 1k by 1k pixel display, which I have seen > once or twice, at SAI in San Diego in some military displays. > > I know a plasma terminal expert; I've forwarded your message to him. > > paul > >> On Aug 13, 2020, at 3:23 PM, Tom U

DEC VRE01 terminal documentation

I have a DEC VRE01 terminal that I bought NIB years ago. For those who don't know about this model, it has a flat plasma (orange/black) display of about 17". It worked when I bought it, but now, years later, I tried powering it up and the light comes on for a moment and goes out. I suspect a

Re: VHDL / IBM SMS Data gathering and HDL Synthesis Update

Very cool! I know of MicroBlaze, but always thought it wasn't free? --tom On 6/14/20 4:25 PM, Jay Jaeger via cctalk wrote: > Don't know if anybody much cares, but: > > The HDL synthesis aspect of the SMS data gathering / HDL synthesis > application is coming along. I can now handle: > > -

Re: (V)HDL Toolsets

On 5/21/20 11:27 AM, Jay Jaeger via cctalk wrote: > On 5/21/2020 11:22 AM, Jay Jaeger via cctalk wrote: >> On 5/21/2020 10:00 AM, Tom Uban wrote: >>> Paul, your project is super interesting. Is there a website where I can >>> track it? >>> >>> --tom &g

Re: (V)HDL Toolsets

On 5/21/20 9:51 AM, Paul Koning via cctalk wrote: > >> On May 20, 2020, at 10:22 PM, Jay Jaeger via cctalk >> wrote: >> >> As I wrote in my last post, but write here for use as a separate thread: >> >> I'd be interesting in hearing from folks what toolsets they have used >> for HDL (VHDL in

Re: pdp11/05 key?

On 4/9/20 2:56 AM, Steve Malikoff via cctalk wrote: > Right said Fred: >> MOST of the other PDP machines use the XX2247 key, which is a tubular one. >> But, THIS thread is about the weird one that is NOT tubular. > Here is my locksmith-cut 11/05 key attached to my pdp11 keyfob: >

Re: pdp11/05 key?

Thanks all. The local locksmith should be able to make me a new one from the information you've all posted. --tom On 4/5/20 7:39 AM, Noel Chiappa via cctalk wrote: > From: Tom Uban > > > Does anyone have information on having a replacement PDP-11/05 key made? > > Goo

pdp11/05 key?

Does anyone have information on having a replacement PDP-11/05 key made? --tnx --tom

Re: Vintage computing spots in Chicago?

On 1/5/20 5:39 PM, John Herron via cctalk wrote: > I'll be in Chicago for a week soon for a work event. Limited time for > myself but I'll have some time Sunday to maybe Uber around. Any suggestions > or cool spots for a computer collector to hit? > > I see a museum of broadcast communications is

Re: HP DesignJet 600 plotter

On 12/7/19 12:45 AM, Jason T via cctalk wrote: > On Sat, Dec 7, 2019 at 12:07 AM Tom Uban via cctalk > wrote: >> I have an HP DesignJet 600 plotter available free for pickup in NW Indiana. >> It worked the last time I needed it, sometime in the last 8 years. > Do you kn

HP DesignJet 600 plotter

I have an HP DesignJet 600 plotter available free for pickup in NW Indiana. It worked the last time I needed it, sometime in the last 8 years. --tom

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

On 11/22/19 1:01 PM, Paul Koning via cctalk wrote: > >> On Nov 21, 2019, at 10:13 PM, Chris Zach via cctalk >> wrote: >> >> I *think* (and this is putting the wayback hat on) that the RH11 originally >> was the controller for the RS03 and RS04 fixed head disk drives. The dual >> Unibus was so

Re: bit-slice and microcode discussion list

On 8/22/19 12:16 PM, Eric Smith via cctalk wrote: > On another mailing list, someone asked if there was any list specifically > about bit-slice design and microcoding. I don't know of one, so I've > created a new mailing list specifically for those topics: > >

Re: Looking for: 68000 C compilers

I have a copy of the source for a set of 68k tools (compiler, assembler, loader, etc) which was based on work done by Chris Terman at MIT. This work was done back in the mid 80s, so some work is likely needed to compile with modern tools. Let me know if you would like a copy. On 2/6/19 10:27 AM,

Re: 11/70 - original or 570 model more desirable?

While I love the original purple tones and the H960 cabinets, perhaps because they fit with most of the other DEC gear I've collected, I think that the commercial blue tones and Vax style cabinets are sexy as hell too. If I had loads of space, money and time, I would love to have all of the

Re: 70's computers

On 10/25/18 12:45 PM, Chuck Guzis via cctalk wrote: > On this subject, is there no interest in serial ALU designs? At one > time, if you wanted a low-cast implementation, that was the way to do > it. Also gives you a leg up on variable word-length designs. > > > Didn't at least one of the more

Re: GT-40 etc.

On 1/21/18 12:04 PM, Paul Koning via cctalk wrote: > >> On Jan 20, 2018, at 11:06 PM, Ethan Dicks via cctalk >> wrote: >> >> On Sat, Jan 20, 2018 at 8:32 PM, Paul Anderson wrote: >>> I think just the VR12, VR14, and the VR17. >> OK. I've never had any

Re: Weird thing ID (core stack?)

Yep, looks like a CDC stack. --tom On 1/17/18 2:24 PM, Toby Thain via cctalk wrote: > Hi, > > An acquiantance was wondering about more details on this part: > > https://imgur.com/a/p1GQ2 > > It seems to be a core memory stack? But of what type? CDC? > > Any info appreciated. > --Toby >

Re: Fujitsu M2235S

ome sort of latch" > comment. Where is the head lock? > Thanks > Phil > On Mon, 2017-10-23 at 10:19 -0500, Tom Uban wrote: >> I assume you've released the head lock? >> >> On 10/21/17 1:31 PM, Phil Blundell via cctalk wrote: >>> Anybody familiar wit

Re: Fujitsu M2235S

I assume you've released the head lock? On 10/21/17 1:31 PM, Phil Blundell via cctalk wrote: > Anybody familiar with the internals of these disks? I have one here > which seems to have the positioner stuck at track zero. I'm not sure > whether it's likely to be just a bit sticky and in need of

Re: Winchester-style coax connectors?

Have you considered using a vector arcade game monitor? On 12/1/16 1:27 PM, Josh Dersch wrote: > Hey all -- > > Due to a small miracle I now have 8KW of perfectly functioning core in my > long-ill Imlac PDS-1D. The last hurdle is devising a replacement for the > missing display (an X/Y vector

Re: TU56 Tape Heads

I have a linctape drive, which is a dectape compatible unit. I do not have the controller or any documentation, but it does have a head which might be useable to replace the broken head. If this would be useful, I would be willing to contribute it to the cause. Please see attached pics. --tom

Re: MEM11A status update

Guy, I am ultimately interested in your UMF11. Will the MEM11A have any potential for expandability? Is there a perf area on the board? Any expansion connectors? Can it be re-programmed by the end user (will source be available)? Best, Tom Uban On 4/26/16 4:52 PM, Guy Sotomayor wrote: > J

Re: Imlac PDS-1 source code

Yes, the mazewar source is saved. I demonstrated it running on my Imlac PDS-1 together with an emulated PDP10 (thanks to Ken Harrenstien) as well as an emulated PDS-1 (thanks to Howard Palmer) back in 2006 at a VCF West. Best, Tom Uban On 4/20/16 7:25 AM, Noel Chiappa wrote: > > From

Re: Imlac PDS-1 source code

I would like a copy of the scan. Best, Tom Uban On 4/19/16 2:25 PM, Seth Morabito wrote: > While arranging some shelves, I came across an Imlac PDS-1 printset > that I rescued from somewhere (I don't remember where) > > What I didn't realize was that in the back of the print

Re: Vintage Mac & PC sale @ VCF recycling warehouse

Hi Sellam, Sorry to hear you are closing up, but understandable. I know you used to have pieces to an Imlac, but I think you already found a home for them (Mr. Dersch perhaps?), if not, I would be interested. Further, I am curious if you have an amber screen Z29 terminal? Best, --tom On