Re: EF50 was Re: radar history

On Sun, 4 Mar 2018, Nico de Jong wrote: E = 6.3v filament F = Pentode 5x = B9G base .. also known as Noval base No, absolutely not ;-) The EF50 has a Loctal base with eight pins. 5xx is Magnoval. 8x is Noval. Christian

Re: IBM junk

On Wed, 27 Jun 2018, Donald wrote: The whole collection went to Computer Museum of America in Roswell, GA https://computermuseumofamerica.org/ Is that the museum that formerly was in San Diego? Christian

RE: Digico computer

On Sat, 6 Oct 2018, Christian Corti wrote: I can make some pictures these days. So, here they are: http://computermuseum.informatik.uni-stuttgart.de/pics/digico Some notes from my part: There were two systems, there is only the front panel and board set left from the second one. One front

Re: Ultrix Tape: Block Size?

On Tue, 16 Oct 2018, Warren Toomey wrote: All, I received this request from Matthew who isn't subscribed to either the TUHS or cctalk lists. He knows how to read the lists archives. Many thanks for any help you can provide. Cheers, Warren See

Re: Identifying TO-3 w/HP house numbering

On Mon, 15 Oct 2018, Josh Dersch wrote: Got an HP 2382A terminal I'm attempting to resurrect. I get no video, no heater, no high voltage. What I believe to be the horizontal output transistor appears to be bad, but I'm not sure if this thing contains internal diodes that might be throwing off

Re: TK50, was: Re: [TUHS] Ultrix Tape: Block Size?

On Wed, 17 Oct 2018, Clem Cole wrote: As Paul W pointed out correctly, the TK50 and its children in the DLT* family all used a fixed format 512 byte *blocks on the tape*.This And that is wrong. The TK50 clearly uses variable block sizes. For example, have a look at a RSX11 or VMS tape:

Re: PDP, Data General & more (TV show Maniac)

On Wed, 31 Oct 2018, Stéphane Tsacas wrote: TV show Maniac (available on netflix), S1E2 @28.48, at least a PDP 11/40, 11/05 or 04, RX01, PDP-8, and 2 Data General Eclipse, DEC doc binders, and maybe an IBM front panel and more. What is a PDP-8/1 XA ? Christian

Re: does a reverse-engineering EDA tool exist?

On Thu, 25 Oct 2018, Guy Dunphy wrote: Keep the objective in mind. What you want to end up with is a schematic, that is laid out in a way that aids comprehension of how the circuit works. Typically this means overall left to right functional or power flow, with separate functional blocks

Re: DEC Alpha Bug Check Crash

On Mon, 12 Nov 2018, Douglas Taylor wrote: This is most likely correct.  I re-installed the OS on a different SD card/SCSI2SD device and got a successful graphics boot up.  Do SD cards drop bits or go bad? Yes, very easily. That is why I absolutely dislike solutions based on SD cards (or on

Digico computer

We recently got a Digico Micro 16V computer including a Pertec 3342 disk drive. It is a 16 bit minicomputer based on 74181 ALUs and a couple of 4k core memory modules. Since the condition of the system is not the best (dirt, dust, some bent wirewrap pins), I'm looking for the usual information

RE: Digico computer

On Wed, 10 Oct 2018, it was written Did you contact the guy with the drawings? Yes but I haven't heard back from him, yet. At least the mail hasn't bounced. Does anyone know the person who runs vintage-icl-computers.com ? There is no name, address or anything there, and I wonder if the site

TK50Z (was: Rack-mount or tabletop version of DEC RX50 floppy drive?)

On Wed, 3 Oct 2018, Adrian Graham wrote: Here?s a pic of my RX50 and TK50. I?ve not tried to power them up for years. Speaking of TK50 and since I'm playing with them at the moment, is there any information on the SCSI command set for the TK50Z? My goal is to talk to one on a Linux system,

RE: Digico computer

On Fri, 5 Oct 2018, it was written http://www.vintage-icl-computers.com/icl49c Drawings for 16V here No, only some non-readable pictures of drawings :-( I should ask the guy to scan them reasonably. Christian

RE: Digico computer

On Fri, 5 Oct 2018, it was written I worked with DIGICO?s in 1974. Is it red? Does it have a manual pull through paper tape reader? Was it made in the UK? I am most interested Yes, it is red and has a small reader on the front plate. The machine seems to be complete (expect the disk drive

Re: Some late fifties HP measurement equipment available. ( Switzerland )

On Mon, 3 Sep 2018, jos wrote: HEWLETT PACKARD TIME INTERVAL UNIT 526B HEWLETT PACKARD ELECTRONIC COUNTER 524C HEWLETT PACKARD DIGITAL RECORDER 560A ( Possibly a second HP524(b) , unsure of this ) We have an HP 523CR, a real beauty. It has over 60 tubes! The LGP-30 has just twice as much.

Re: SPACEWAR! Switch Boxes for a PDP-12

On Sun, 23 Sep 2018, Michael Thompson wrote: We modified the source from D.E. WREGE

Re: Rayethon Computer AN/FYK9 CMI Store 33

On Mon, 24 Sep 2018, Chuck Guzis wrote: How about some 22-bit or 13 bit architectures? How about our Dietz MINCAL 523? 19 bit architecture, memory is 20 bits with parity. Microprogrammed machine, microcode within normal address space, mixed twos-complement and sign-magnitude arithmetic.

Re: Rayethon Computer AN/FYK9 CMI Store 33

On Mon, 24 Sep 2018, Al Kossow wrote: The only Raytheon I know of is Bob's 704 http://dvq.com/oldcomp/photos2/1k/704.jpg Aw, come on, you could know it better. We also have a 704 since many years, including software and documentation. You have mirrored my scans on bitsavers ;-) Christian

Opening RL02 disk pack

Hi, how does one open a RL02 disk pack? A couple of packs need cleaning but I can't figure out how to open them... Christian

Re: Opening RL02 disk pack

On Wed, 5 Dec 2018, Michael Fritsch wrote: The top of the middle part of the handle (this with the slider) is only glued slighly at the base part. With a screwdriver it is removeable quite easy. After removing it, it reveals the secret of the mechanism. [...] Before doing this, remove the

Re: Opening RL02 disk pack

On Thu, 6 Dec 2018, it was written Wait, by 'open' do you mean 'release the bottom dust cover', or 'disassemble and remove all plastic till the platters are fully exposed'? Of course I mean 'disassemble and remove all plastic till the platters are fully exposed'. I know how to remove the

Re: Opening RL02 disk pack

On Thu, 6 Dec 2018, Christian Corti wrote: Well, this is exactly my question: how do I remove the disk (= platter) from the pack (= cartridge). And there are no magnets in the disk pack. Here are some pictures that hopefully clarify my question:

Re: Opening RL02 disk pack

On Thu, 6 Dec 2018, it was written I don't know that anyone did that back in the day - the pack cleaners I'm aware of had arms that wiped the top and bottom surfaces of the platter while the platter was still mounted inside the shell. I know Well I don't have an RL pack cleaner. And in my

Re: SunOS 2.4 Exploit

On Sun, 9 Dec 2018, Ken Seefried wrote: I believe SunOS 2.4 is old enough all you need to do is delete the password hash from /etc/passwd to log in without a password. Please tell me more: what is SunOS 2.4? I know of SunOS (1.x, 2.0, 3.x, 4.x) and Solaris (1.x and 2.x). Or do you mean Solaris

Re: George Keremedjiev

On Thu, 22 Nov 2018, Robert Feldman wrote: BTW, we went through this about 6 months ago. Someone pointed out the strange characters in Ed's posts. No change resulted from that, however, and I doubt this thread will cause any change. Yup, Ed is resistant to any form of advice. He could just

Re: Removing PVA from a CRT

On Tue, 20 Nov 2018, Michael Thompson wrote: the glass. We trimmed the Lexan to size, reassembled the Lexan and glass to the front of the CRT, and glued the steel mounting band in place. It looks great, and is probably a lot safer than just leaving the PVA out. You removed the steel band???

Re: warped RK05 pack -- lost cause?

On Wed, 9 Jan 2019, Fritz Mueller wrote: So, one of the things I have along with my 11/45 is an RK05 alignment cartridge. Unfortunately, its seems warped -- rides up an down a few millimeters in each direction as you turn it in an RK05 drive. :-( I don't think it's the platter but perhaps a

Re: Interest in a DiscFerret?

On Thu, 10 Jan 2019, Guy Dunphy wrote: * Also I have some old HP equipment that uses HP-format floppies. LIF? They're not DOS compatible. A HP 1630G logic analyzer with 9121 GPIB dual floppy drive, and a HP 8 data generator. For both machines I have old floppies containing critical

Re: Interest in a DiscFerret?

On Thu, 10 Jan 2019, Paul Berger wrote: One problem you may encounter reading LIF format diskettes on a PC using these tools is many LIF diskettes are formatted 256 bytes/sector and there is lots of PC diskette controller out there that cannot deal with that including *All* standard PC floppy

Re: PDP-11/45 RSTS/E boot problem

On Mon, 7 Jan 2019, Fritz Mueller wrote: It wasn?t clear to me last time I looked that I could build V6 to run off a single pack without having a second RK05 drive and pack available for swap? I have 2.9BSD on a single RK05 pack *with* a small swap space, it works very nicely. I have a 11/45

HP music [was: music dec tapes? (paper)]

On Thu, 3 Jan 2019, Bill Degnan wrote: I have tapes with labels [...] "Start 8 Music" (hand-written, no printed label) Speaking of PDP-8 music: there was also a music program for the HP 21xx computers. There are only absolute binary papertape images available. Does someone happen to have

Re: Opening RL02 disk pack

On Fri, 7 Dec 2018, Noel Chiappa wrote: > From>: Christian Corti > I thought that the DEC packs would be similar but no, DEC had to invent > something different... Huh? I thought RL0x drives use an IBM 5440 type pack (as used on the IBM Yes, I mean the mechanism of the handle that

Re: More old stuff incoming

On Wed, 19 Dec 2018, Peter Corlett wrote: For what it's worth, PCI-to-ISA adaptors exist. Virtualisation will let you Really? Show me one that is 1) in current production, 2) offers the full ISA bus (not just some decoded address lines and 8 data lines), 3) plugs into a PCI slot. Christian

Re: Pleas ID this IBM system....

On Sun, 7 Apr 2019, P Gebhardt wrote: wow! ...Hopefully some larger museums or seriously envolved hobbyists within Germany can take care of this piece of history to save this nice piece of computer history. Hm, let's see if our museum can get that system - as long as the price stays

Re: HP 85 tapes

On Mon, 25 Feb 2019, it was written The way I have been doing it is to copy the tape files to a LIF floppy disk file (real or just emulated with HPDRIVE), then archive that - either just the HPDRIVE file or a ImageDisk archive of the real disk. Recreating the tape is the inverse process of

Re: BASIC for HP 1000, 21xx series

On Mon, 25 Feb 2019, Jay Jaeger wrote: The operating procedures for BASIC are likely to be as described in my pocket handbook: It's also described in the HP 2116 Operator's Guide: ftp://computermuseum.informatik.uni-stuttgart.de/hp/21xx/docs/02116-9057_OperatorsGuide_Dec1970.pdf Christian

Re: HP 85 tapes

On Tue, 26 Feb 2019, Christian Corti wrote: And what about SECUREd files? I'm thinking of a binary program that ideally dumps the cartridge to e.g a single floppy disk file. I've done something similarly for the IBM 5110, but I'm no HP 85 expert at all. There's quite a large HP community, I

HP 85 tapes

Hi, what is the recommended way to image HP 85 tape cartridges? The best would be including headers and whatsoever, and to be able to recreate tapes from the images and have a 1:1 duplicate from the original cartridge. I'm almost done with rebelting and imaging our 264x cartridges and would

Re: HP 85 tapes

On Tue, 26 Feb 2019, Paul Berger wrote: Well a quick google and I found this http://vintagecomputers.site90.net/hp85/hp9915_eprom.htm it would seem that this was one of the tools used to build images of programs to burn into EPROMs for  9915 which is a version of the 85 designed to be used as

Re: Fujitsi 2444AC 9-track tape drive/PDP-11

On Thu, 21 Mar 2019, Jay Jaeger wrote: On 3/20/2019 9:56 AM, Jon Elson via cctalk wrote: On 03/19/2019 09:51 PM, W2HX via cctalk wrote: The pertec-to-SD project sounds very cool. Keep me in mind if you need testers/buyers. Yes, me too!  I still have a working 92185 (Keystone) drive, and

IBM 5100

Hello to all IBM 5100 owners, I have started disassembling and commenting the Executable ROS of the 5100 that a kind soul has exctracted and provided me with the dump. I've come across an inconsistency with the Maintenance Information Manual as found on the net. I have both SY31-0405-2 and

Re: sun 88780 on ebay

On Mon, 28 Jan 2019, Al Kossow wrote: https://www.ebay.com/itm/132933407806 this is interesting because of the price and that all of the Sun drives I've ever come across had the 800bpi option in them I read HP Tape Drive 1/2" 1600/6250 1E on the label at the back. Christian

Re: Pleas ID this IBM system....

On Tue, 16 Apr 2019, William Donzelli wrote: Looks like it went for roughly $4k USD. Obviously logistics and storage cost play into things, but somebody got a deal. Dang. -C Assuming the innards of the machines were not all rust buckets - yes. I expected at least twice that, maybe triple.

Re: ATEX PDP-11 For Sale in Houston

On Tue, 16 Apr 2019, Robert wrote: On Tue, Apr 16, 2019 at 7:48 PM Jon Elson via cctalk Wasn't the /34 all TTL? I'm pretty sure that my 11/34 is. That was a large part of its appeal to me. I should get back to it, when I have a minute... The OP first tried to sell the system on

Re: Pleas ID this IBM system....

On Tue, 16 Apr 2019, William Donzelli wrote: The 3125 would likely be near impossible to get running without a full set of docs. I think I could have access to the 3125 docs (MLM, CTM, ALD etc.). At least I know where they are. Christian

Re: 11/93 Rebuild

On Mon, 27 May 2019, Rod Smallwood wrote: In addition to the normal IDE drive it has an additional SCSI controller and drive   Using SIMH  I have created an image (RD54.dsk) containing a RSTS system. I am awaiting the final instructions as to how to copy the image to the SCSI

Re: 11/93 Rebuild

On Mon, 27 May 2019, Rod Smallwood wrote:   On an old XP box?  er neither will run My reply was meant as a hint. You should be able to find a dd-like tool for Windows yourself ;-) Either by using a old version of Cygwin (there are instructions how to find them), by installing a stand-alone

Re: Network cards and Win98SE

On Mon, 13 May 2019, Grant Taylor wrote: "Gaming adapters" take a wired computer and connect it to a wireless network. That "adapter" has always been called a WLAN or wireless bridge. Christian

Re: Pleas ID this IBM system....

On Tue, 21 May 2019, Patrick Finnegan wrote: Plumbing (unless you're doing aisle containment or RDHx) shouldn't run through the IT space in the data center. So how exactly do you attach a modern water cooled rack system to your cooling water system if not using plumbing? Cooling water to

Re: Pleas ID this IBM system....

On Tue, 21 May 2019, Grant Taylor wrote: On 5/21/19 2:13 AM, Christian Corti via cctalk wrote: You definitely need a raised floor for a data center. I think Google and their YAWNs will disagree with you on an actual /need/ for a raised floor in a data center. I'm not Google, I can't put my

Re: Raised Floors

On Wed, 22 May 2019, Chuck Guzis wrote: So how are data centers cooled with water now? Does the water cool coldplates directly? Sort of, see for example the Rittal LCP system. I've had only a couple of instances where cooling water was used. In All current high-density rack systems need

Re: Pleas ID this IBM system....

On Mon, 20 May 2019, Patrick Finnegan wrote: I guess it would look right for the era, but I'd never build a data center with raised flooring after my experiences with them. It's such a pain to work with compared to a sealed concrete floor and overhead cable trays. My experience is that

Re: Pleas ID this IBM system....

First, congratulations from us :-) Reading your blog, I'm glad that we did not win the auction. We simply do not have the time and space (and money) to handle this, especially the effort needed to get everything out of the house. I and Klemens both have jobs that require us to do other things

Re: OT: the end of Dyn DNS

On Thu, 27 Jun 2019, da...@kdbarto.org wrote: From what I can determine the paid service will continue, it is the free service that is being stopped. Kinda sad really. I used to (until this The free service from dyndns.org had been stopped several years ago (somewhere between 2012 and 2014).

Re: Recovering the ROM of an IBM 5100 using OCR (among other things)

On Thu, 27 Jun 2019, Noel Chiappa wrote: > From: Liam Proven > This is *epic*. Indeed. I was blown away by the complexity of his technique for reading the digits. I can't believe there wasn't a much easier technique, though, e.g. using a logic analyzer and a small program to read

Re: Pleas ID this IBM system....

On Mon, 15 Apr 2019, it was written you guys bidding on it then? Yes, but only up to a certain limit. Christian On Mon, Apr 8, 2019 at 4:53 AM Christian Corti via cctalk < cctalk@classiccmp.org> wrote: On Sun, 7 Apr 2019, P Gebhardt wrote: wow! ...Hopefully some larger m

Re: Pleas ID this IBM system....

On Tue, 16 Apr 2019, Christian Corti wrote: On Mon, 15 Apr 2019, it was written you guys bidding on it then? Yes, but only up to a certain limit. 3710 Euro... someone with definitely too much money for a system in unknown condition and local pickup only. So no, we did not get the system,

Re: Scanner: was : Re: VAX DATATRIEVE orange binders (4)

On Fri, 16 Aug 2019, Al Kossow wrote: The scanning info is on the main bitsavers.org page I'm still using a Panasonic KV-S3065CW I checked the backlog of scanned VAX manuals, and it doesn't look like I have anything more scanned fore DATATRIEVE BTW do you still accept scanned documents

Re: Archiving information, was Re: ADM-3A question

On Fri, 16 Aug 2019, ben wrote: Well with me I have been finding with many searches, the modern browsers refuse to display sites for "what they figure is unsafe" yet the porn ads still show. I can find it, but not view it. I use current versions of Firefox and Chrome/Chromium, and I don't

Re: Archiving information, was Re: ADM-3A question

On Thu, 15 Aug 2019, Noel Chiappa wrote: An additional issue, I think, is that Google is deprecating sites that use HTTP, versus HTTPS. I can't comment more, lest I start ranting at the utter Not true, in contrary, Google even crawls through FTP sites :-) Christian

Re: looking for a 7-track reel tape controller

On Wed, 7 Aug 2019, Michael Thompson wrote: can be connected to both 7-track and 9-track drives. The TU20 drive on the PDP-9 at the RICM is a 7-track drive. The only difference between the 7-track and 9-track versions of the TU20 is the tape head. All of the tape drive electronics is the same

Re: Scanning Results

On Sun, 21 Jul 2019, Guy Dunphy wrote: http://www.bitsavers.org/bitkeepers is something else. The site's contact email is right down the bottom of the front page. Visual, to stop spambots. Also Al posts here in cctalk. Speaking of this, I suggest to rethink the method of submitting scans

Re: Scanning question (Is destruction of old tech docs a moral crime?)

On Sun, 21 Jul 2019, Warner Losh wrote: I just scanned my Rainbow 100 User's Manual at 300, 600 and 1200dpi using the scansnap default settings. You see a jump between 300 and 600, but little difference going on up to 1200 for this material. I posted the That tells me that you need to scan at

Re: Scanning Results

On Mon, 22 Jul 2019, it was written Just give him time, he is only human after all ;-) I know :-) I think I should wait some more years (I found a mail from Feb. 2016, the last was from Aug. 2018) ;-)) Christian

Re: Course materials for MIT 6.031 (c. 1974) scanned

On Mon, 30 Sep 2019, ben wrote: A quick look, nothing is said about Algol, did you mean Assembler? what I see is interesting is that LISP is on a 11. I allways thought LISP only ran on BIGGER machines. I have the source and binary for KLISP-11 V2 on papertape; available on our FTP server.

Re: flux to imd

On Sat, 21 Sep 2019, Chuck Guzis wrote: On 9/21/19 10:26 AM, Al Kossow wrote: On 9/21/19 10:12 AM, Mark J. Blair wrote: Is it effective to bake cookies in their jackets? I don't know, since i've never baked floppies. Chuck would know. Yes, I do. Usual 58C temps that I use for tapes.

SUN Diagnostic Executive

I'm encountering some strange and severe failures on our 4/260 and therefore I'm looking for a dump/tape image of the Sun-4 Diagnostic Executive. The manuals are online but not the tape, so I hope someone has made a dump. Thanks, Christian

Re: Scanning docs for bitsavers

Dear Mister Noname, On Tue, 3 Dec 2019, it was written That's _LOSSY_ JBIG2. YOU DON"T HAVE TO USE LOSSY MODE! Don't shout!! And for the topic: you don't have to use JBIG2. Space isn't really an issue today for scanned bilevel documents, so you can just stick with TIFF G4 or PNG.

Re: Scanning docs for bitsavers

On Mon, 2 Dec 2019, Eric Smith wrote: There are newer bilevel encodings that are somewhat more efficient than G4 (ITU-T T.6), such as JBIG (T.82) and JBIG2 (T.88), but they are not as widely supported, and AFAIK JBIG2 is still patent encumbered. As a result, *NEVER* use JBIG2! I hope you know

Re: Zilog 8000 system replacement boards

On Sat, 7 Dec 2019, Nathan Brown wrote: [unreadable blob of text] Nathan, please re-post with proper context, sentences and text formatting. I have a hard time understanding the text. Christian

Re: Philips mini computers

On Sat, 26 Oct 2019, jos wrote: On software side not much : a single cassette with Fortran & manuals. That is also the problem with our P856, I have a single-density FDC with floppy drives but no floppy based operating system. Christian

Re: Philips mini computers

On Sun, 27 Oct 2019, nico de jong wrote: Then you could generate turnkey systems, where the "operating system" could be floppy or cassette (ECMA34) based, Turnkey systems typically controlled process equipment and the like, where operator intervention was very limited, normally limited to

Re: Philips mini computers

On Sat, 26 Oct 2019, nico de jong wrote: As for documentation I have the CPU (only) technical manual for the P850, the 2 volumes of schematics for the P851 and the preliminary manual (alas without the microcode source) for the P854. Some other schematics for things like the P854's PSU, the 4

Re: Scanning docs for bitsavers

On Wed, 27 Nov 2019, mloe...@cpumagic.scol.pa.us wrote: On Wed, 27 Nov 2019, Noel Chiappa via cctalk wrote: That's what I use too; it has tons of useful features, including being able to drive my single-sided page-feed scanner and being able to number the even-sided pages correctly. The one I

Re: First Internet message and ...

On Tue, 26 Nov 2019, Richard Pope wrote: I don't know anything about this system. I don't consider Minis and MainFrames to be Personal Computers. It must fit in a small room, run on a 120VAC 5Amp service, and not require 3 tons of AC to keep it cool to fit in to the Personal Computer

Re: Scanning docs for bitsavers

On Wed, 27 Nov 2019, Paul Koning wrote: On Nov 27, 2019, at 2:56 PM, Jason T via cctalk wrote: On Wed, Nov 27, 2019 at 10:12 AM Christian Corti via cctalk wrote: My recommendation: use a proper multi-function copier (the big copiers) that can also scan to network. I currently use our big

Re: Able document at VCF Midwest

On Sat, 5 Oct 2019, Noel Chiappa wrote: The thing is that documentation for Able products is hyper-rare; we only have those for the UNIVERTER and QNIVERTER, and some preliminary notes for the ENABLE. So if this can somehow be located... And what about the stuff on bitsavers? I personally have

Re: G15 Drum Followup

On Wed, 26 Feb 2020, Barry Hills wrote: I sold the heads separately along with a set of replacement cards and the remote display for $400. You did what??? Did you really "ruin" an apparently intact drum instead of keeping it complete as one piece? Anybody know what non-magnetic metal forms

Re: Anyone heard of the S1 Operating System

On Thu, 27 Feb 2020, wrco...@wrcooke.net wrote: Reading through the April 85 issue of Byte, I came across a reference to the "S1 Operating System." In Jerry Pournelle's column on pg 361 he talks about this mysterious OS. Here is a small excerpt: Robert Knight. formerly of Princeton's

Westward

Hi, I'm looking for information about Westward graphics workstations, especially for the 2019 (from about 1983) and the 2220 (about 1987). Christian

Re: ICL1501 Cobol manual available

On Tue, 7 Apr 2020, jos wrote: ftp://ftp.dreesen.ch/ICL1501 There is the manual for the early 70´s COBOL implementation for the ICL1501, a small 8K or 16K TTL based personal computer ( TTL based CPU, with 2x 74181 ALU and a 32x8 CRT display) I'm sure you already know this :-)

Re: Informix for SCO XENIX

On Tue, 13 Oct 2020, Sean Ellis wrote: Just wanted to let you all know that I've found a copy of Informix 3.11 for SCO XENIX on the Lisa 2... anyone interested? Interesting, yesterday I got a copy of Informix 2.0 for SINIX (a Siemens XENIX derivate) for the PC-X. Christian

Re: Informix for SCO XENIX

On Thu, 15 Oct 2020, it was written Can I get a copy of that? I have a PC-X ;) It can be found on our FTP server: ftp://computermuseum.informatik.uni-stuttgart.de/siemens/pc-x Christian

Re: Basf 6104 Assy 8118 jumper named Bx

On Sun, 18 Oct 2020, "Enrico email.it" wrote: I was looking for the BASF 6104 drive manual. Did you ask on classiccmp? If yes, I must have overseen that. Because, I have it on our FTP server since a long time ;-) ftp://computermuseum.informatik.uni-stuttgart.de/basf/BASF6104_Aug1981.pdf

Re: Basf 6104 Assy 8118 jumper named Bx

On Sun, 18 Oct 2020, "Enrico email.it" wrote: on internet I find the one related to ASSY 81098 (where the jumpers have the [...] while instead I am looking for the one related to ASSY 81118 (in which the Sorry for the noise, I have missed the part about the assy number. I don't have the one

Re: Future of cctalk/cctech

On Wed, 17 Jun 2020, Doug Jackson wrote: We could consider moving to Google groups hosting. No... no no no no no. Never. Either become a (real) NNTP group or stay as a mailman list. Christian

RE: Future of cctalk/cctech

On Wed, 17 Jun 2020, ED SHARPE wrote: These 2 have my vote as well I do not know, anyone using a text only mail reader anymore! Yes, of course. I'm exclusively using Alpine even at work. Christian

Re: Future of cctalk/cctech - text encoding

On Wed, 17 Jun 2020, ben wrote: Does this mailing list have people using EBCDIC for example? Yes, if for example I use Kermit on the IBM 5110 and connect to a UNIX host. ;-) But in this case, my Kermit is doing the translation between ASCII and EBCDIC. Christian

Re: PDP-8/A transformer hum

On Tue, 9 Jun 2020, Marco Rauhut wrote: i have restored last year a PDP-8/a to and had the same experience like you with the Powersuppy. I felt also wiered about the bang in the transformer in the moment of switching it on. Does it have a ferroresonant power supply? Then the hum and bang is

Re: NEC NEAX IVS2 PBX with NEAXMAIL AD-8 - hard drive clone, issues

On Sun, 29 Nov 2020, Liam Proven wrote: If there are any errors on the drive, I would recommend GNU ``ddrescue``. Do not confuse this with the older (but still maintained) dd_rescue which is the product that inspired the GNU one; the newer one is more capable. It images but skips and continues

Re: RL02 Tracking

On Mon, 21 Dec 2020, Aaron Jackson wrote: The status currently is that the heads will load, and the ready lamp flashes as the heads wobble back and forth very slightly, trying to lock onto the outer servo guard band. Probing TP2 of the read/write module, I can see the S1 servo burst flash

Re: R: Floppy disk: one drive per face

On Fri, 6 Nov 2020, "Enrico email.it" wrote: So this for to read 1st face A: BEGIN MUP1 Mupid Seite 1 - SSSD 96 tpi 5.25" [...] And this for to read the other side B: BEGIN MUP2 Mupid Seite 2 - SSSD 96 tpi 5.25" [...] Absolutely correct :-) Christian

Re: Floppy disk: one drive per face

On Fri, 6 Nov 2020, geneb wrote: On Fri, 6 Nov 2020, Chuck Guzis via cctalk wrote: [...] I prefer my solution. If you opt to format the second side, you'll end up clobbering the first side in the process. But then, what does this bozo know? FYI Christian, in case you weren't aware the

Re: Floppy disk: one drive per face

On Thu, 5 Nov 2020, "Enrico email.it" wrote: How should we configure 22disk to be able to do the same thing on the B side of the same floppy disk? Inserting Side 2 in the definition table is not enough Actually, it is almost that ;-) I have a similar system, the fl100 floppy drive

Re: APL\360

That reminds me of the APL\360 implementation running on the IBM 5100 and 5110 using a rudimental System/360 emulator written in PALM machine code stored in the APL Executable ROS. The APL interpreter is stored in the APL language ROS and was accessed like an I/O device, i.e. the emulator

Re: Greaseweazle

On Mon, 1 Feb 2021, Fred Cisin wrote: If you are READing 8" disks, and ONLY READing, then you can get away with a simpler caable. The main time that you might need the fdadap is for TG43 for writing. But, the fdadap is a convenient way to not have to make a cable. You only need the TG43

Re: Greaseweazle

On Mon, 1 Feb 2021, Al Kossow wrote: Imagedisk, even though it spends way too much time with the heads spinning on the media at least does real-time retries. the problem is you also need to be able to stop and assemble a complete image by splicing together multiple partial attempts. Well,

Re: Greaseweazle

On Tue, 2 Feb 2021, Al Kossow wrote: Do you make these available online? I found your version of IMD here ftp://computermuseum.informatik.uni-stuttgart.de/utils not under source control. Ups, I see that this is a very old version. I'll update this with my current version and I'll write

Re: Greaseweazle

On Tue, 2 Feb 2021, Al Kossow wrote: Copy protection is just a pain in the ass. A tiny, tiny fraction of what I work with has any and I'm very happy it is mostly used on consumer computers which are being archived by others so I don't have to. :-)) This is also my attitude. I just don't care

Re: IBM Logic IC equivalency information needed

On Fri, 11 Jun 2021, Santo Nucifora wrote: I am currently working on an IBM 5100 that has some issues. I know for certain that the 5100 has a bad graphics controller card so I need to dig into component level replacements for those ICs I can replace. I have a list of logic chip equivalents to

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