test-drb

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101090 discussions

by spacewar＠gmail.com

Does anyone have contact information for the proprietor of this site: http://www.activityclub.org/decnotes/ The site has an index of messages archived from DEC's internal "Notes" (kind of their equivalent of UseNet). It appears from the "Download this site" page that at one time it was possible to download an archive of the actual content, but the hosting used for that only provides one week of free hosting, which has expired. I don't need the entire archive (though I'd like to get it), but I'd especially like to get messages from milkwy::23class_semiconductor and ricks::decschips.

5 years

Massbus - was: Re: VAX 11/750

by michael.99.thompson＠gmail.com

The PDP-10 KL10 at the RCS/RI was used to control a real-time flight simulator at Sikorski. It had one of the RH20 Massbus controllers connected to a DTR01 cabinet holding a DR01 chassis. The DR01 was, I think, connected to a DR11 chassis that had A/D and D/A converters boards inside. You could use the same DTR01 subsystem to connect two PDP-10s together with Massbus, or connect a PDP-10 to a PDP-11 with Massbus. -- Michael Thompson

5 years

FW: List your old computer

by erik＠baigar.de

Hm, just adding that my venerable SUN SPARC UII runs WEB server, ssh, web proxy, sub-version, and is my "cloud" via rsync and of course serves email. Over the last 7 years it got rebooted only twice, because the provider needed to relocate it in the server farm and during one of these reboots we replaced a failed disc in the array. I am pretty sure it would have ran without reboot the full 7 years with one good disc left...

5 years

VAX 11/750

by jbglaw＠lug-owl.de

Hi! Just stumbled over https://www.ebay.de/itm/265064917329 . Is it a system somebody of you is offering? Given that it would need to be shipped through Europe and is in unknown condition, I'd probably bid a few Euros on it. MfG, JBG --

5 years

FW: List your old computer

by cclist＠sydex.com

On 2/25/21 2:05 AM, Peter Coghlan wrote: > Chuck Guzis wrote: > I don't think so. My Raspberry Pi running Linux becomes choked by memory leaks > when I leave it running more than a few months. No amount of killing processes > or other fiddling with the operating system tools available allows it to > recover and the only alternative I can find is to reboot it. My VAX/ALPHA > machines/clusters just keep on trucking until the next power failure. I suppose it depends on what's being done. I've got an OrangePi PC running headless that's nothing more than an email relay and an Internet radio server. Until we had power cuts because of the summer wildfires, it ran more than a year. It's been running since power returned. I've got a OPi Zero hooked to a stereo system (headless again) running nothing more than mplayer. Various modems/routers and other appliances have been running BusyBox as an embedded OS. They pretty much escape notice. --Chuck

5 years

Funky electronics chain Fry’s is no more (Seattle Times)

by decguy＠songdog.eskimo.com

https://www.seattletimes.com/business/funky-electronics-chain-frys-is-no-mo… So sad to see them go. There was a Fry's store close enough for me to visit occasionally. What will I do now when I actually want to examine the merchandise before I pay for it?

5 years

Massbus - was: Re: VAX 11/750

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > technically the MASSBUS cable is just an extension of the Unibus No. For one thing, the MASSBUS has no lines for carrying memory addresses. So there is no way to even build a box that 'translates' MASSBUS to UNIBUS; the semantics ('the things you can say', basically) of the two busses are so very different. (The MASSBUS is actually two separate busses; a control bus, and a data bus. The former has 5 lines for 'register address', but that's all. While the control bus is asynchronous, the data bus is synchronous.) Noel

5 years

SaturnCalc, Graph, and WP disks uploaded

by mark＠matlockfamily.com

Hi all! Spent some serious time this evening with the RX02 drives: I managed to download the images of the SaturnCalc 3.0, Saturn Graph, and Saturn WP software to RX02 images. I think it's set right, can someone take a look at the images and see if they are good? Should be RT11 format, RX02 (of course), I recorded from both sides of the disks (they're double sided, hole punched by the vendor) and are at https://www.crystel.com/bob You should see the disks and the meta files. Let me know if they work, I need to get to bed. Either burn them on real RX02's or read them with a SIMH image. C Chris, I am very interested in Saturn Calc for PDP-11s specifically for RSX. I downloaded your floppies and will take a look at them soon. You mention that they are in RT-11 format. Do you know which PDP-11 OS the Saturn software was for. They had versions also for RT-11, TSX and RSTS. Later they had native VMS and MSDOS versions. There are images of RX50s for RSX Saturn Calc, Graph and WPS at Malcolm?s web site. https://avitech.com.au/?page_id=2570 <https://avitech.com.au/?page_id=2570> He also gave me some documentation that I have scanned and put up at http://www.rsx11m.com/SaturnInstall.pdf <http://www.rsx11m.com/SaturnInstall.pdf> http://www.rsx11m.com/SaturnCalc.pdf <http://www.rsx11m.com/SaturnCalc.pdf> http://www.rsx11m.com/SaturnCalcRef.pdf <http://www.rsx11m.com/SaturnCalcRef.pdf> Saturn products on the PDP-11 and VMS used their own license key systems. I do have valid licenses for Calc and Graph for VMS and have them running on a MV3100-80. It would be great to get the RSX version running. I used it extensively back in the day and it would be wonderful to preserve it. Best, Mark Matlock

5 years

PDP11 (Qbus) boards available

by boris＠summitclinic.com

Have been told by my wife that PDP-11 stuff not coming along with us when we're moving and so time to get it off to a good home. All of it is QBus and material in first batch is what I've got at home and will try to get pictures of another 2 systems in storage locker this week. Locker contains 2 QBus systems, one is a small system with about 64 Kb of RAM and other is larger, also a Qbus system. I powered them up when I got them but that was close to 30 years ago so power supplies will need to be checked out first. Also have a small 4 slot Qbus card cage H9281 which has a DRV11 board in it (photo not shown). Pictures, in order, are 4 channel 12 bit D/A converter, unknown QBus board, programmable real time clock, what I thought was manual for DataTranslation A/D converter but not, A/D converter, have no idea what Dilog board is, box of DEC cables, a few manuals, MINC manuals, 11/23 together with I suspect is a DRV11, not sure what board with bus extensions on top is, bus extender, blank 2 slot board and another board which was part of a parallel interface between MINC and 11/34. Would preferably like to get rid of everything at once. Haven't looked at cost of shipping out of Canada. Alternatively, send me an email off list is you want to pick it up in person. I live in Kamloops, BC. Photographs can be found at: http://drgimbarzevsky.com/Photo2020/PDP11/20210223_photos/PDP11_index.html Boris Gimbarzevsky

5 years

SaturnCalc, Graph, and WP disks uploaded

by cz＠alembic.crystel.com

5 years

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