test-drb

test-drb@ccmp.vtda.org

101090 discussions

by w9gb＠icloud.com

Some days I feel like ?Doc Brown?, wondering where I parked the DeLorean. ? YES ... connecting your HP 9000 to your private LAN would be useful. ThinNet = 10-Base-2 = 10 MB Ethernet over RG-58/U 50 ohm coaxial cable. The Series 360 workstation should also have an AUI port (15-pin D-subminiature with locking mechanism option). ? I would recommend an AUI transceiver to 10-Base-T media converter (UTP with 8-pin modular jack). Black Box, Unicom, and other brands are available. https://www.omnitron-systems.com/flexpoint-10-aui-media-converter.php You did not mention the Operating System (OS) that you have installed on this HP 9000 series 360. HP-UX was the standard OS offering 30 years ago, when I went thru HP?s one month of classroom training on HP9000 hardware, networking, & HP-UX. https://www.hpmuseum.net/exhibit.php?class=1&cat=40 You will need the Ethernet network driver installed for your OS, and standard TCP/IP tools (telnet, ssh, ftp, nfs, etc.). greg chicago ==== Date: Fri, 21 Feb 2020 10:19:40 -0800 From: Roger Addy <roger.addy at charter.net> To: cctech at classiccmp.org Subject: HP 9000 Series 360 Thin LAN Hi All, I am using an HP 9000 Series 360 with a "Thin LAN" coax card to run a piece of equipment. The LAN connection is not currently being used.? I'm wondering if it's possible to connect it to a modern ethernet network?? If so, what could I do with it? I found an adapter on Amazon. I would like to be able to transfer files and possibly print.? The file systems are not compatible except for maybe ASCII files.? Anyone have any thoughts?? Even if I could transfer files into another HP 9000 system it would be beneficial. Thank you, Roger A.

6 years, 2 months

Parasitic Engineering Altair Clock Fix Kit...

by stephen.m.pereira.sr＠gmail.com

Thanks a million, Mike, for scanning and posting this. I purchased this fix for my Altair way back when for $15, and it?s been one of those things that I?ve never been able to find online. I never purchased the Parasitic Engineering power supply fix, but I have found it online. The Parasitic Engineering clock fix has eluded me until now. BTW, IIRC, the PE clock fix worked excellently and I never had any clock related issues after installing it. The S-100 bus, the weak power supply, not enough slots, all those wires on the bus, all gave me plenty of headaches, but the clock fix worked great! smp - - - Stephen Pereira Bedford, NH 03110 KB1SXE > On Feb 22, 2020, at 1:00 PM, cctech-request at classiccmp.org wrote: > > Message: 15 > Date: Fri, 21 Feb 2020 21:25:45 -0600 > From: Mike Douglas <deramp5113 at yahoo.com> > To: cctalk at classiccmp.org > Subject: Re: Parasitic Engineering Altair Clock Fix Kit... > Message-ID: <8F336A6C-BACB-44E7-B3D4-DFAA00D1E26F at yahoo.com> > Content-Type: text/plain; charset=us-ascii > > I scanned my Parasitic clock mod documents and put them at the link below. > > https://deramp.com/downloads/altair/hardware/altair_8800_computer/Parasitic… > > Mike >

6 years, 2 months

Parasitic Engineering Altair Clock Fix Kit...

by Wayne.Smith＠warnerbros.com

> Date: Thu, 20 Feb 2020 17:26:26 -0800 (PST) > From: Fred Cisin <cisin at xenosoft.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: Parasitic Engineering Altair Clock Fix Kit... > Message-ID: <Pine.LNX.4.64.2002201714270.19282 at shell.lmi.net> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > Howard Fullmer created a "beefier" power supply for the Altair. Ed > Roberts said that people selling aftermarket peripherals were "parasites", > so Howard named his company "Parasitic Engineering". > > He later produced the "Shuffleboard" (daughterboard) set for TRS80 that > changed the memory map to be CP/M compatible, and an adapter > (daughterboard) to change the exp-ansion interface to support 8" single > density. (4th West Coast Computer Faire 1979) > > He and George Morrow put out early proposals for standardizing S100. > > Later, he was chief engineer for Morrow. > > He is no longer at the same addresses in north Berkeley and Albany. > I heard a rumor that he had died, but I have been unable to find more > information. George Morrow, who would know, is also dead. > > -- > Grumpy Ol' Fred cisin at xenosoft.com It appears that he died on 4/25/96 at age 48. His last address was in Hayward. -W

6 years, 2 months

Parasitic Engineering Altair Clock Fix Kit...

by wh.sudbrink＠verizon.net

Hi, Does anyone happen to have the instructions for this kit? I would really appreciate a scan if you do. Also looking for a 1975ish GE Porta-Color television (borrow, rent or buy) for VCF East. Thanks, Bill Sudbrink

6 years, 2 months

Parasitic Engineering Altair Clock Fix Kit...

by deramp5113＠yahoo.com

I have an original paper manual for it. I?ll try to get it scanned tomorrow. Mike

6 years, 2 months

Larry Tesler - Computer Pioneer

by c.murray.mccullough＠gmail.com

Heard of death today of Larry Tesler, pioneer worker at Xerox Parc. He advanced the era of human-computer interaction. He 'created' copy- and-paste and cut-and-paste which made everyday computing in DOS-age easier before GUI-age made mouse-driven commands easier on computer users. Early pioneers are leaving us and I state their drive to innovate to advance computer-use easier is being lost. Happy computing all. Murray ?

6 years, 2 months

related parts?

by aek＠bitsavers.org

24-bit front panel https://www.ebay.com/itm/Vintage-Computer-Control-Panel-Concept-Development… diode memory https://www.ebay.com/itm/Vintage-Computer-Printed-Circuit-Board-Memory-Arra…

6 years, 2 months

Anyone making Amiga/Dallas rtc affected motherboards?

by barythrin＠gmail.com

Seems like with any system affected by Dallas rtc leaks it's make sense to refab some clone boards we could move our surviving parts to. Is anyone already doing this? It's sad to see the fewer working Amigas and others dying.

6 years, 2 months

Please make sure your messages have a Subject: line

by jnc＠mercury.lcs.mit.edu

Please make sure your messages to CCTalk have a Subject: line, otherwise they end up being 'un-clickable' in the archive, like this: http://www.classiccmp.org/pipermail/cctalk/2020-February/date.html It's possible to hand-edit the URL's to see them, but it's a PITA! Noel

6 years, 2 months

3/60 for sale in Sweden

by stefan.skoglund＠agj.net

someone is selling a Sun 3/60 labeled as Nokia Data AB. I think that it is a 3/60. https://www.tradera.com/item/340854/363918390/nokia-data-system-20-4mb 350 $ (2495 Sek) or so. It is a re-seller.

6 years, 2 months

Sun 3/60

by stefan.skoglund＠agj.net

someone is selling a Sun 3/60 labeled as Nokia Data AB. I think that it is a 3/60. https://www.tradera.com/item/340854/363918390/nokia-data-system-20-4mb 350 $ (2495 Sek) or so. It is a re-seller.

6 years, 2 months

No subject

by billdegnan＠gmail.com

Looking for a DECMATE (VT-278 model) RX278 Floppy Drive Interface Connector cable, part number is RC26N-2L It's a 37 male-25 pin male cable. Here is photo I took of one (not mine) https://www.vintagecomputer.net/digital/DECmate/DECMATE_VT278_PortsDriveCab… I have the pinouts for the 37-pin end but not the 25-pin end. If no one has a cable I can do a continuity test of the cable next time I have access one, but it's not easily available. I am located near Philadelphia. Thanks Bill

6 years, 2 months

Images of -11/24 in 10-1/2 box

by jnc＠mercury.lcs.mit.edu

Does anyone have an -11/24 in a BA11-A 10-1/2" mounting box? If so, I'd love some images of the internals, if possible! I ask because the BA11-A doesn't use the usual MATE-N-LOC connector for sending power to the CPU; instead it has bus bars, and in the -11/44 (the usual denizen of this box), the KD11-Z CPU backplane has a Flexprint cable which bolts to those, to carry the power. The thing is that the -11/24 backplane uses the usual MATE-N-LOC connectors; to run an -11/24 in that box (the manuals says that's the standard 10-1/2 box for it) the prints show a special adapter plate: that's what I'd like to get images of. If anyone has a spare adapter plate, that would be even better; I'd love to buy/trade it, if so. (I'm interested in running an -11/24 in the BA11-A since in a BA11-L 5-1/4" box, the limited +5VB severely limits the amount of memory one can have.) Noel

6 years, 2 months

Larry Tesler

by aek＠bitsavers.org

https://www.cultofmac.com/685669/larry-tesler-the-apple-employee-who-invent… https://twitter.com/cdespinosa/status/1229996808052469760

6 years, 2 months

Fwd:

by useddec＠gmail.com

I thought some list members might find this interesting. I still like what the British did and the tunnel under Berlin. https://www.washingtonpost.com/graphics/2020/world/national-security/cia-cr… > >

6 years, 2 months

HP 12016A SCSI card

by jesse＠cypress-tech.com

would anyone happen to have a 12016A SCSI card? If so and you want to sell or trade for some other HP hardware, let me know. Thanks Jesse at cypress-tech.com

6 years, 2 months

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

by j_hoppe＠t-online.de

UniBone emulates now the M9312 bootstrap ROM card. Each of the 5 ROMs can be loaded with MACRO11 listings files from http://www.ak6dn.com/PDP-11/M9312/ The tricky bootvector redirection logic is also implemented. The address to execute after power-on is given as symbolic MACRO11 label. For demonstration the script "m9312+xxdp_dl0.sh" is given, which boots into 11/34 console emulator, or auto-boots XXDP from RL02. kind regards, Joerg

6 years, 2 months

Previous message: Wire list for the RKV11-D Qbus RK05, controller backplane anywhere?

by flash688＠flying-disk.com

Jerry Weiss <jsw at ieee.org> wrote: > On 2/12/20 11:28 AM, Noel Chiappa via cctalk wrote: > > > > That fourth card (M7268) is apparently a connector card for the Q-Bus > > > and drive bus. > > > > Yes, but actually there are 6 cards: the M7269 is a dual card which goes > > into the QBUS backplane, and the M993-YA which goes into the first RK05, > > to convert from the two flat cables which come from the M7268. > > > > > From: Al Kossow > > > > > Also, it is only 18 bits. > > > > Actually, only 16-bit DMA addresses, I'm pretty sure. > > > > Noel > > That's what is documented in Micronote #5. There is a comment in the > 15-Dec-1994 DECUServe Journal that says it can be modified for 18 bits > from Alan Frisbie. Yes, it can, and it works well. I ran RSX-11M from RK05s on my 11/73 system. I even managed to find the article I wrote, on a 1986 backup of an RSX-11 disk, now loaded on SIMH on my Alpha/VMS system. I have already sent a copy of the RUNOFF file (and resulting text file) to Dave McGuire, who tracked me down, and will do so for anyone else who would like it. I also have the RKV11-D manual and print set, but they are buried in one of the many boxes in my shop, so it might take a while to find them. If you need them, let me know and I'll dig them out and scan them. Alan "Packrat" Frisbie

6 years, 2 months

CDC 9720 status/control panel

by aperry＠snowmoose.com

Hi, Does anyone here have a CDC 9270 (SMD HDD) status/control panel that I could borrow to check whether the drive that I have thinks that it is OK? alan

6 years, 2 months

Fujitsu M2372 SMD disk manual and status

by aperry＠snowmoose.com

Two things: 1. Does anyone here have documentation for Fujitsu's M2372 SMD disk? M2382 is on bitsavers, but there are some differences between it and the M2372. 2. I removed the drive from the Sun Storage Pedestal chassis, so I could see what status LEDs are turning on when I power it up. STS0 is solid and STS3 is flashing. Is this some transitory state as the drive is coming up or is this a fault indication? It has stayed in that state for at least 10 min, so I presume it is a fault. If I am reading the M2382 manual correctly and is is applicable to the M2372, the fault "indicates the condition to Power Ready is not correct or the drive detect the unexpected MPU interruption". alan

6 years, 2 months

Crimping 68pin (HD68) Wire

by cctalk＠ibm51xx.net

Hello All,Recently I tried making some custom SCSI cable. In the past I have successfully made my own 50pin SCSI and Floppy cables with out much issue. However, I am finding it almost impossible to crimp the HD68 connectors on the cable. I have even tried a vise grip and I still couldn't get it to crimp all the way down. Anybody with some advice? Is there a trick I am missing? TiA.

6 years, 2 months

VAXmate PSU Failure

by robert.jarratt＠ntlworld.com

A little while back I posted here because I needed help with analysing the failure of the PSU from my VAXmate. Since then I have had some comments on the reverse engineered schematic which I have now improved and which is here: https://rjarratt.files.wordpress.com/2020/02/h7270-control-pulse-width-modul ator.png Following advice from a list member, I have been looking at the 555 and the PWM that control the switching transistor, using a bench power supply to power the PWM directly (across pins 5 and 7). When I do this, I find that Vref from the PWM, which should be 5V to power the 555, does not reach 5V. I have tried removing the 555 from the circuit, and when I do this Vref goes to the nominal 5V, once Vcc to the PWM is above 16V. However, if I put the 555 back in, then Vref only goes to 2V. I have socketed the 555 and tried with two other brand new 555 chips, the result is the same. It seems that just adding a 555 kills the Vref output of the PWM. It can't be anything else in the circuit because everything else is still in circuit when the 555 has been removed. Could the PWM be faulty? Perhaps it can't provide enough current to bring Vref up to 5V once the 555 is in the circuit? Any suggestions gratefully received. Regards Rob

6 years, 2 months

Teac FD-54

by vax＠purdue.edu

I've got a couple of Teac FD-54B's that appear to have problems with their index sensors. Does anyone have any docs for these? The internet seems to barely know they exist vs the FD-55, which has info everywhere. I'm thrown off a bit by the 3 wire phototransistor (vs the common 2 wire ones) they they use, and I haven't quite disassembled it enough to figure out a part # for that. Also, if anyone has a pair of spare black FD-55B, that'd be useful too. Patrick Finnegan

6 years, 2 months

large HP DesignJet plotter needs a good home

by shumaker＠att.net

Classic heavy duty HP Designjet 755CM C3198B? in search of a new home as it's now one stop short of the e-waste people. It's large? (handles a 36in roll) and has the usual DesignJet stand.??? I can even include some NOS ink cartridges. It would need a horizontal belt as they deteriorate even without use but otherwise in good shape; it was fully functional when I removed it from service. I'm not trying to sell it, I just hate to trash it. Not easily shippable, it's located in the Santa Cruz area - I could deliver it here in the bay area if someone wants it. Steve

6 years, 2 months

Happy 74th Birthday ENIAC

by blstuart＠bellsouth.net

On this, the 74th anniversary of the unveiling of the ENIAC, I've decided to post a couple of things I've been working on. The first is the 3D model of the ENIAC mentioned before. It's designed using brlcad, from the Ballistics Research Lab. It just seemed too appropriate to model it using the tool devleoped where it lived. The thingiverse link is: https://www.thingiverse.com/thing:4164825 The second thing is a draft of a chapter from a book I'm in the very early stages of. It describes the basic circuit designs used in the ENIAC with SPICE simulations of them. The layout and formatting are based on the old Army Technical Manuals of the time. http://cs.drexel.edu/~bls96/eniac/ch1.pdf Enjoy, BLS P.S. Apologies if you got this multiple times; I've posted it to a few lists I'm on.

6 years, 2 months

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