[cctalk] WTB: Keyboard for IBM 3290-1 terminal.
Hello, I'm looking for a keyboard to use with an IBM 3290-1 terminal (DB25 connector). IBM part number 6016730 or similar. Regards, Andrew
[cctalk] Re: Free to good home HP 7510a Photo Plotter - UK
Hi Dave, Did this go? If not, I'd be interested. I'm located in Hebden Bridge, so could drive over to collect. Best, Andrew On 16/11/2023 10:24, Dave Wade G4UGM via cctalk wrote: > Folks, > > > > Trying to reduce the weight in my loft and I would like to donate my HP > Photoplotter to a good home. > > . Photos of the plotter and some sample plots are on my OneDrive here:- > > > > https://1drv.ms/f/s!Ag4BJfE5B3ongspXY7zySSZsDj-WMg > > > > It has both serial and IEEE interfaces and uses HPGL like the GP and Roland > pen plotters. > > The plots on there are the samples built into the plotter taken on a Fuji > XE-1 digital camera and are cropped because the Fuji does not have a full > frame sensor. > > The tube is actually a white tube and the colours are generated by rotating > colour filters. > > Its powered by a 68000 and you can see the various boards in the pictures. > > > > Dave > > > > >
Re: Retro networking / WAN communities
On 11/04/2022 18:02, Grant Taylor via cctech wrote: > Does anyone know of any communities / mailing lists / newsgroups / et > al. for retro networking / WAN technologies? > > I find myself interested in (at least) the following and would like to > find others with similar (dis)interests to chat about things. > >- 10Base5 / 10Base2 / 10BaseT >- ISDN >- DSL / ADSL / SDSL / HDSL >- T1 / E1 >- ATM >- Frame Relay >- ARCnet >- PSTN / PBX / PABX The Osmocom community have a retro networking project, with projects including TDM over IP. https://osmocom.org/projects/retronetworking/wiki/ They have also created an open hardware USB E1 interface that can be used with the aforementioned, as well as with older GSM base stations which implement Abis over E1 (which you can then operate with the Osmocom CNI software stack). https://osmocom.org/projects/e1-t1-adapter/wiki/IcE1usb There's also Osmocom-Analog, if your interests extend to retro cellular. http://osmocom-analog.eversberg.eu/ Andrew
Re: 400 Hz
On 05/05/2021 16:07, Grant Taylor via cctalk wrote: > Were the higher frequencies used because it directly effected the amount > of time / duration in (fractions of) seconds between peaks of rectified > (but not yet smoothed) power? Haven't read the rest of the thread and so at the risk of being profoundly wrong... Benefit of 400Hz mains is that transformers can be much smaller. Think of switching power supplies that rectify to DC and then switch up into kHz, which are then able to use far smaller transformer cores than an old linear PSU. At least this is a key motivation with 115V/400Hz 3-phase aviation power AFAIK. By coincidence we've just built a big 28VDC power supply, so that we can run a vintage 400Hz aircraft rotary inverter, which will then be used to power up old mil surplus kit that wants this. A classic adventure in yak shaving. Anyway, here's the 28VDC bit. https://www.rs-online.com/designspark/constructing-a-high-current-28v-dc-power-supply Andrew
Re: Looking for IBM 3278 Operator Console
On 26/04/2021 08:23, Hayden via cctech wrote: > > I'm trying to track down a keyboard to complete a system which is proving > quite difficult! > > Here is the specific unit: https://i.imgur.com/FsG24G3.jpg > > if anyone happened to have one of these spare or know someone who does > please let me know! You just missed one on eBay. https://www.ebay.co.uk/itm/IBM-3278-3279-beamspring-keyboard-1742720-FullyTested-clicky-Beam-Spring-AOK-/333955798938 I'm afraid you'll be competing with keyboard fetishists and so now a keyboard seems to fetch multiple times that of the terminal unit itself. Andrew
Re: SIMH on low overhead platform
On 17/08/2020 08:43, Tom Hunter via cctalk wrote: > Has SIMH been ported to a low overhead (instant-on) platform? > > I ask the question because the startup time of Linux is distracting when > powering on a PiDP-11/70 or similar clone systems based on SIMH. Haven't seen anything, but Linux can be made to boot much faster, e.g. if you have hardware which supports Coreboot firmware/BIOS, Linux can also be loaded from flash along with this, as its payload. So maybe this and a very minimal filesystem generated with something like OpenEmbedded, could be one approach. Also wondered if SimH could be ported to a UEFI application. The environment seems to provide some O/S like features, but no idea how much would be missing or significantly different. Andrew
Re: OpenVMS Community License
On 29/07/2020 15:21, Bill Gunshannon via cctalk wrote: > On 7/29/20 10:07 AM, Antonio Carlini via cctalk wrote: >> On 29/07/2020 14:19, Paul Koning wrote: >>> On Jul 29, 2020, at 4:28 AM, Antonio Carlini via cctalk wrote: ... For those of you with hobbyist licence PAKs, I presume that pakgen.c will work on all versions that VSI doesn't support. I know it's frowned on but it's not really different to running PDP-11 software is it (as that is/was generally not licenced). >>> Not licensed? What about the Mentec hobbyist license? That's pretty >>> broad and clear. >>> >>> paul >>> >> All I can find is one on the IA: >> >> >> https://web.archive.org/web/20110629021938/https://www.eecis.udel.edu/~mader/delta/download/license.txt >> >> >> >> That covers SIMH rather than real HW (afaict). If there's another one, >> that's good. >> > > > It also only covered SIMH until Bob Supnik left DEC. > > "MENTEC grants to CUSTOMER a worldwide, non-exclusive, royalty-free > license under MENTEC's INTELLECTUAL PROPERTY RIGHTS to use and copy > the SOFTWARE TECHNOLOGY solely for personal, non-commercial uses in > conjunction with the EMULATOR." > > Note that EMULATOR is highlighted with capitalization. > > " EMULATOR shall mean software owned by Digital Equipment Corporation > that emulates the operation of a PDP-11 processor and allows PDP-11 > programs and operating systems to run on non-PDP-11 systems. " > > Here it is defined. "owned by Digital Equipment Corporation". > That condition ceased to exist when Bob left DEC and DEC allowed > him to take SIMH with him. > > This is plain English. One does not need to be a lawyer to see > what it actually says. They were very explicit in their wording. So presumably you could continue to use an old version of SimH that was "owned by Digital Equipment Corporation", under the terms of this license grant. I don't see anything there about explicit termination. Andrew
Re: OpenVMS Community License
On 28/07/2020 19:11, Camiel Vanderhoeven via cctalk wrote: >> On Jul 28, 2020, at 7:47 PM, John H. Reinhardt via cctalk >> wrote: >> The question that will be answered when someone gets the VSI CLP PAKs is >> will those PAKS work on an older version of OpenVMS? The Hobbyist PAKs >> produced by Compaq and HP have always worked on current and older versions. >> Is there something in the License Manager code that could limit it? The >> Hobbyist PAKS I have been getting for years all list DEC as the Producer >> even through the Compaq and HP years. I suppose VSI could have engineered >> OpenVMS and/or the PAKS with VSI as the Producer which would probably limit >> them to working on VSI versions of OpenVMS. > > No need to wait for that; I can answer that question right away; VSI's been > selling licenses for a while now. Yes, they have a different PRODUCER, so > they will not work with older (non-VSI) versions. Will the license also include all the same layered products as before, or just some subset of these? Cheers, Andrew
IBM 3194 VDU (WTB/pinout).
I have an IBM 3194 base unit and keyboard, but no monitor. Hence would like to try and source a suitable monitor and any suggestions on this front would be appreciated. Failing which, also considering the possibility of using some other non-original monitor, but not sure what the interface (15-pin D type, but standard density) is and pinout etc. Also potentially interested in offers of other 3270 displays (off-list). Cheers, Andrew
Re: WTB: SMD drive
On 18/09/17 19:48, Camiel Vanderhoeven via cctech wrote: > Now that I have the Convex C220 completely up and running again, I¹m > hoping to do the same thing for my Convex C1. I just acquired a set of > 9-track tapes containing dumped root, /usr, and /mnt filesystems for it. > Once I obtain a suitable drive, I could connect it to the C220, restore > the filesystems there, and move the disk over to the C1 to serve as its > system disk. > > So, I¹m in the market for an SMD drive. It has to be one of the following > four types though: > * Fujitsu M2351 (Eagle) > * CDC 9766 > * NEC D2352 > * NEC D2363 > > And I¹d prefer it to be located somewhere in continental Europe (even > better if it¹s in the Netherlands). Apologies if the link for these has already been shared: http://www.ebay.co.uk/itm/NEC-D2246-8-0-FHT-SMD-DISK-DRIVE-UN-TESTED-NEW-OLD-STOCK-RARE-VINTAGE-/253049784698 Andrew
Wanted: Parsytec SCSI-T or BBK-S4.
Hello, I'm looking for a Parsytec SCSI or SBus to Transputer link adapter. Buy or possible swap for something else interesting. Also wouldn't say no to a Partsytec X'Plorer, should anyone be looking to part with one (or two). Cheers, Andrew
