[cctalk] Re: What was this AT&T SCSI enclosure for?

Sounds like a box for a 7300. Pics? On June 1, 2025 4:10:45 AM EDT, Andrew B via cctalk wrote: > >I have an AT&T branded SCSI enclosure. Two half-height bays with the >drives held vertically (on their sides), with a door that opens to >expose one for a tape drive, activity lights labeled hard d

[cctalk] Re: May Repair and Social Meeting Reminder

Hm. If I were local I'd love to come and fix stuff for beer and recognition On May 18, 2025 10:31:22 AM EDT, Henry Bent via cctalk wrote: >On Fri, May 16, 2025, 20:48 Mike Katz via cctalk >wrote: > >> This is a reminder that the next CCC repiar/social meeting will be at my >> house in Glen Ell

[cctalk] Re: PDP-11 hardware clock

ADV11-A, KWV11-A, AAV11-A, DRV11 User's >Manual.pdf. > >On Sat, May 3, 2025 at 9:18 PM Ethan Dicks via cctalk >wrote: > >> On Sat, May 3, 2025 at 12:08 PM Christopher Zach via cctalk >> wrote: >> > Interesting. I have one does it emulate a kw11? Can it ke

[cctalk] Re: PDP-11 hardware clock

Interesting. I have one does it emulate a kw11? Can it keep the date and time between reboots? On May 2, 2025 3:44:14 PM EDT, Ethan Dicks via cctalk wrote: >On Fri, May 2, 2025 at 11:53 AM Jonathan Chapman via cctalk > wrote: >> > Is the KWV11-C card the best option for that or are there other

[cctalk] Re: DEC Unibus variants

Dec kind of did this with the pdt11 series of systems. The q bus was basically emulated with a pair of 8085 CPUs to emulate Dec peripherals. Fine enough but kind of meh. On April 1, 2025 11:09:40 AM HST, ben via cctalk wrote: >On 2025-04-01 11:55 a.m., ED SHARPE via cctalk wrote: >> Why not t

[cctalk] Re: DEC bus transceivers (was: DEC Unibus variants)

Indeed. I think I have sixteen dZ11 boards that I could part for a unibone On March 30, 2025 11:49:44 PM CDT, Paul Anderson via cctalk wrote: >Does anyone have a list of what boards they were used on? > >I do have some boards I'm planning or recycling (I know, I shouldn't say >that, especially h

[cctalk] Re: DEC Unibus variants

Da11-f unibus window is 4 slots and has two complete unibuses (I have one) On March 30, 2025 6:17:05 PM CDT, Ethan Dicks via cctalk wrote: >On Sun, Mar 30, 2025 at 11:06 AM Jon Elson wrote: >> On 3/29/25 21:05, Ethan Dicks wrote: >> > On Sat, Mar 29, 2025 at 9:46 PM Jon Elson wrote: >> >> In the

[cctalk] Re: networking on CTOS

Is this the wollogong tcpip stack from the 1980s? I have that running ony 3b1 (att 7300 PC convergent unix) and yes it is both wacky and fragile C On March 3, 2025 11:20:41 PM EST, "r.stricklin via cctalk" wrote: >Trying to experiment with TCP/IP (and, to a lesser extent, OSI and BNet >clust

[cctalk] Re: RS232 - parallel modems!?

16450 was the one with buffer issues On February 11, 2025 11:49:23 AM EST, ben via cctalk wrote: >On 2025-02-11 9:32 a.m., Peter Corlett via cctalk wrote: > >> The proper solution to dodgy PC serial port performance was of course to >> upgrade to the 16550 which had a FIFO which could buffer a f

[cctalk] Re: Looking for bootable floppy image for a PDP11/20

Since you have a second dl11 the best move might be to load rt11 from a tu58 emulator then format some rx02 floppies and go to town. Sent from my iPhone > On Jan 20, 2025, at 5:12 PM, Wayne S via cctalk wrote: > > Try here… > From an old newsgroup > Just a note that Jerome Fine collected toge

[cctalk] Re: AI? Really?

As you get more ai systems running you just run into the xeroxgraphoc effect and it all falls down Sent from my iPhone > On Jan 19, 2025, at 1:11 PM, Chuck Guzis via cctalk > wrote: > > On 1/19/25 09:39, Carlos E Murillo-Sanchez via cctalk wrote: > >> What happened to them? They're everywher

[cctalk] Re: PDP-10 TENEX mini-dump format

Too bad it is Facebook. I’m sure there are people here or on discord who would know Sent from my iPhone > On Jan 8, 2025, at 4:13 PM, roger arrick via cctalk > wrote: > > There are some good FB groups specific to DEC and PDP11 with thousands of > members and lots of knowledge. > > Here's on

[cctalk] Re: auction starting in 50 minutes

Interesting. I wonder how they handled the stekler boards Sent from my iPhone > On Sep 10, 2024, at 7:53 PM, Fred Cisin via cctalk > wrote: > > "bought by Christies" might mean that individual employees, or corporate, > might offer a paid "proxy bidding" service?

[cctalk] Re: MS-DOS

Oh lord was it gammafax? Sent from my iPhone > On Jul 30, 2024, at 12:12 PM, The Doctor via cctalk > wrote: > >  >> On Monday, July 29th, 2024 at 18:22, David Wise via cctalk >> wrote: >> >> I will never forget Windows ME. Bleargh! > > I had to admin a fax server running on an ME box for a

[cctalk] Re: DEC RM03 / CDC 9762

Unless you enable hog mode dma. Works but then you can’t reliably use other dma devices on the Unibus. Like like that Sent from my iPhone > On Jul 27, 2024, at 10:34 AM, Paul Anderson via cctalk > wrote: > > The RM03 overran the RH11, that's why DEC had the RM02. Same basic drive, > just sl

[cctalk] Re: DEC RM03 / CDC 9762

Sure. I have enough spare boards to make another rh11 and while I have some packs extras are handy. Let’s chat next week when I am back C Sent from my iPhone > On Jul 27, 2024, at 10:34 AM, Paul Anderson via cctalk > wrote: > > The RM03 overran the RH11, that's why DEC had the RM02. Same ba

[cctalk] Re: DEC RM03 / CDC 9762

Speaking of which did any of the emulex sc univus adapters support 18 bit mode? On July 25, 2024 6:27:38 PM GMT+02:00, Guy Sotomayor via cctalk wrote: >I'd be interested in the unibus SMD controllers as I'm in the middle of >working on an SMD emulator and it would be "nice" to be able to use on

[cctalk] Re: DEC RM03 / CDC 9762

An rm03? I could use one for my 2020 On July 25, 2024 2:40:57 PM GMT+02:00, Tom Uban via cctalk wrote: >Hi Christian, > >As others have indicated, the drive has an SMD interface. >FWIW, I have a drive which was working when I acquired it a number of years >ago, along with a bunch of disk packs

[cctalk] Re: DEC RM03 / CDC 9762

s, > >Nigel > > > >On 2024-07-25 07:02, Christopher Zach via cctalk wrote: >> I have always heard that Dec screwed with the smd spec. Maybe not? >> >> On July 25, 2024 12:41:57 PM GMT+02:00, Michael Thompson via >> cctalk wrote: >>> The CDC test sy

[cctalk] Re: DEC RM03 / CDC 9762

I have always heard that Dec screwed with the smd spec. Maybe not? On July 25, 2024 12:41:57 PM GMT+02:00, Michael Thompson via cctalk wrote: >The CDC test system for the RM03 is a standard SMD device. You disconnect the >Massbus interface and connect the test system where the Massbus interfac

[cctalk] Re: NeXT computer system...

I have one in my closet Sent from my iPhone > On Jul 16, 2024, at 1:19 PM, John Robertson via cctalk > wrote: > > On 2024/07/16 9:24 a.m., Bill Degnan wrote: >> how hard is it to track down a replacement NeXT cube motherboard? >> Bill > > Is that a trick question? > > I have no idea...this

[cctalk] Re: Video/keyboard mono cable for Sun 386i

Am at a conference just do a search on 386i and I should pop up On May 30, 2024 9:06:48 AM EDT, Stefano Sanna via cctalk wrote: >Hi. > >I thought about using the serial connection (which should be enabled only if >the video card is removed). > >Thank you for the advice about the battery: usual

[cctalk] Re: Charles Stross, replay the bubble of 1995, alt history plus retrocomp

It is funny, but truth be told we dodged a massive bullet by going with the "Internet" and TCP/IP as opposed to the nightmare of AT&T Connect, IPX, and the blazing speeds of TWO! ISDN B channels. I was there. I remember X.400, and how NDS was going to be the directory system that bound us all

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

Always fun to see some of the flameouts that came from css. Sha tin always pops to mind. Sent from my iPhone > On Apr 16, 2024, at 9:39 AM, Paul Koning via cctalk > wrote: > >  > >>> On Apr 16, 2024, at 10:15 AM, William Donzelli via cctalk >>> wrote: >>> >>> I'll bet the source was tal

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

If you want word-addressable, the RF11 will do that. Not the RC11, it has 32 word sectors. Oh yeah, the pdp11 world had a DF32 like thing with the RF11. Totally forgot about that one. C

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

This uncited claim was introduced 15 years ago, along with the commit comment "Hey, I saw drums (and core memory!) on PDP 11/45 hardware running UNIX v6 (pre-BSD) in 1980 ... " So, someone anonymous saw some once, somewhere, and promoted this to "many sites." Well, I can submit a correction, b

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

Was reading the Wikipedia article on Drum memories: https://en.wikipedia.org/wiki/Drum_memory#External_links And came across this tidbit. As late as 1980, PDP-11/45 machines using magnetic core main memory and drums for swapping were still in use at many of the original UNIX sites. Any tho

[cctalk] Re: PDP-11 thingy. What is it?

Quniverter perhaps? C On 4/10/2024 8:07 PM, W2HX via cctalk wrote: Great! thank you Glen and also Michael T. for the identifications. So this appears to be a PDP-11/23 with this FC-202 floppy controller. 1. I have read that the card and the drives were compatible with the dec rx02 drives. Why

[cctalk] Re: How to shutdown RT11?

I remember it as kill -9 1 then sync halt Or sync sync halt On March 23, 2024 2:53:56 PM GMT, Paul Koning via cctalk wrote: > > >> On Mar 22, 2024, at 6:38 PM, Diane Bruce via cctalk >> wrote: >> >> On Fri, Mar 22, 2024 at 11:00:25PM +0100, Warner Losh via cctalk wrote: >>> On Fri, Mar 22, 2

[cctalk] Dumping an UV PROM for a Sun 386i

Hi all! I'm working on a little side project to see why one can't put a better CPU chip into a Sun 386i. Basically with a real 386 in the socket the system will at least start to flash the LEDs on the back, but with a Cyrix chip the LEDs are frozen on. I can remove the frame buffer, memory c

[cctalk] Re: HAPPY DEC-20 DAY!

My late friend Mark always noted that TOPS-20 (and the DECSYSTEM-20 on which it runs) was a great improvement on its successors. I wish you all a joyous Winter Solstice Festival, however you may choose to celebrate it. Indeed Rich and everyone. Good to be on this list, and good to meet so m

[cctalk] Re: Old Professional/350 software, any of this out there

Thank you I will rescan the third disk. On August 4, 2023 12:33:31 PM EDT, "Hans-Ulrich Hölscher via cctalk" wrote: >I did some testing on the image sets using simh. >I had to prepare the images first using lbn2rx50 >, because simh expects them to be in >logical

[cctalk] Re: Using Teledisk 2.16 to read old RX50 images

Sounds good. Imagedisk however produces imd files, need to then convert to imd files with the imdu /b command. Cz On May 14, 2023 9:58:31 AM EDT, Warner Losh via cctalk wrote: >On Sun, May 14, 2023, 7:47 AM Chris Zach via cctalk >wrote: > >> Hi! >> >> Well, after a good bit of work I have fin

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

People who used to do watches. Similar size issues. On April 25, 2023 3:38:16 PM GMT+02:00, Paul Koning via cctalk wrote: > > >> On Apr 25, 2023, at 9:25 AM, KenUnix via cctalk >> wrote: >> >> Rod, >> >> Never heard the singing. Switch room's were too noisy. >> >> It always amazed me that t

[cctalk] Re: One of Paul Allen's Museums

Well there is an agreement that if paul ever got tired of ai, lost interest, and wanted to get rid of it then I would show up with a U-Haul to pick it up off the dock. All this has happened before, all this will happen again. Digex, sandstorm, ftp, etc. Funny I thought it would end with Paul.

[cctalk] Re: One of Paul Allen's Museums

Let's see where this goes. I might need to do a forensic dump, fire up my NeXT and find the letters and documents around ai.ai.mit.edu Figured this would happen. On April 25, 2023 3:03:02 PM GMT+02:00, Paul Koning via cctalk wrote: > > >> On Apr 25, 2023, at 2:16 AM, Tom Hunter via cctalk >>

[cctalk] Re: ESDI drive imaging

Not that I know of. Esdi has a much faster data rate and I think that outstrips the BBB solution. C On April 22, 2023 6:18:39 PM EDT, Dennis Boone via cctalk wrote: >I think I know the answer to this, but just in case: > >Is there a way to image ESDI disks other than to hook them up to their >

[cctalk] Re: HP9825A for sale

A 9825a is rare? I couldn't find anyone interested in one with a down power supply last year. Sold for 500 on ebay On April 17, 2023 11:51:42 AM EDT, Steve Lewis via cctalk wrote: >There is a gentlemen in New Jersey willing to sell his HP9825A > >I believe he is the original owner. It has 4 R

[cctalk] Re: Why the Floppy Disk Just Won't Die

r 5.25" floppies though :-) I'll take 'em :-) (though I >probably shouldn't :-) ). > >No 3.5" HD though I have enough of those to last a lifetime.... if they >last :-) > >-- Curt > >On 2023-03-09 19:53, Christopher Zach via cctalk wrot

[cctalk] Re: Why the Floppy Disk Just Won't Die

Interesting article but when goteks are 30 a pop on ebay and work on something as wonky as a professional 350, I think it's time to let 5.25 floppies go I'll get a teac but mainly to convert all my pdp11 floppies to images. Cz On March 9, 2023 7:00:39 PM EST, Jim Brain via cctalk wrote: >htt

[cctalk] Re: Using Flashfloppies on Professional 350 and 380--SOLVED

Not sure yet. Will see in a week or so On March 8, 2023 1:42:58 PM EST, Lee Gleason via cctalk wrote: >"Holy smokes. Poking around on these disk images it looks like these system >have a FULL DECNET FILE SERVER as well." Are you referring to DECnet FAL on >the PRO, or the little known PRO Clus

[cctalk] Re: DEC PDP 11/60's in need of a new home.

Wow. Interested pics? Do they have rk07 s On January 28, 2023 4:54:50 PM EST, Jerry Wright via cctalk wrote: >I have 2 of these that  are in need of a  new home.  These are quite large  4 >racks each.  Although the 11/60 is only a double rack by itself. >Offers. Located In Kent. WA. >- Jerry253

Re: Flip-Chip selloff

I've had 30+ years to acquire this "stuff". :-) On 2/2/2021 4:38 PM, Mark Linimon wrote: On Tue, Feb 02, 2021 at 05:57:27PM -0500, Chris Zach via cctalk wrote: Probably a lot more. "Probably" ??? Sheesh. I thought *I* had too many projects. mcl