test-drb February 2014

test-drb@ccmp.vtda.org

191 participants
208 discussions

by michael.99.thompson＠gmail.com

> > From: Pontus Pihlgren <pontus at Update.UU.SE> > Date: Sat, 8 Feb 2014 08:46:33 +0100 > On Fri, Feb 07, 2014 at 02:55:41PM -0800, Zane Healy wrote: > > What kind of PDP-11's did VAX 8000's use as Consoles, and what > > did their console software consist of. > > > > That depends, models 8600 and 8650 used an 11/03 with RX > floppies (ours has an RL drive too). I'm not sure about the OS, > I bet it is RT11. > > The other models didn't have a front end AFAIK. > > /P > > The 8650 at the RICM has a T-11 PDP-11 chip on the L0201 CSL board. The BA11 chassis holds the Q-Bus for the CSL board and includes a M8061 RVL12 RL02 Disk Control for the RT11 boot disk. The 8600 Console Specifications Manual is here: http://manx.classiccmp.org/mirror/vt100.net/dec/ey-4818e-dx-0001.pdf -- Michael Thompson

10 years, 10 months

MINC-11 Software

by aswood＠t-online.de

Hello all, I'm looking for MINC-11 software disk images - I found images for the miniminc only. Andreas

10 years, 10 months

ICE/ISEE-3 to return to an Earth no longer capable of speaking to it

by lproven＠gmail.com

1978 satellite returns to Earth orbit, still live - but NASA no longer has transmitting/receiving equipment old enough to communicate with it. http://www.planetary.org/blogs/emily-lakdawalla/2014/02070836-isee-3.html There might be potential for a CCmper to save the day on this one! :?) -- Liam Proven * Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk * GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com * Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 * Cell: +44 7939-087884

10 years, 10 months

VAX 8000 Console?

by bqt＠update.uu.se

On 2014-02-08 10:00, allison<ajp166 at verizon.net> wrote: > > On 02/08/2014 03:06 AM, Zane Healy wrote: >> >On Feb 7, 2014, at 11:46 PM, Pontus Pihlgren<pontus at Update.UU.SE> wrote: >> > >>> >>On Fri, Feb 07, 2014 at 02:55:41PM -0800, Zane Healy wrote: >>>> >>>What kind of PDP-11's did VAX 8000's use as Consoles, and what >>>> >>>did their console software consist of. >>>> >>> >>> >>That depends, models 8600 and 8650 used an 11/03 with RX >>> >>floppies (ours has an RL drive too). I'm not sure about the OS, >>> >>I bet it is RT11. >>> >> >>> >>The other models didn't have a front end AFAIK. Pontus misremembers. Our 8650s (two of them), just like all 86x0 machines have an RL02 drive for the FE. > I don't think that was right. By time the 8600 arrived the 11/03 was > in retirement. IF memory serves it had a dedicated T-11 for console. > > The T-11 was a single chip version of the PDP-11 and the board > used would likely have been Falcon (T-11 Qbus SBC). Correct in that it is a T-11. Wrong in that it don't use a Falcon. The FE in the 86x0 is a dedicated board inside the 86x0 cabinet. And then two cables goes out to a Qbus backplane from there. The FE on the 86x0 machines are indeed running just a plain RT-11. And the Qbus only have an RLV12 controller and nothing else. As others have noted, other machines in the 8000-family used other consoles. There was PRO-380 based ones, and uVAX II based ones. But even newer have no FE at all. The VAX-11/780 was the machine with an 11/03 and RX02 floppies (or was it RX01?) for the FE. It ran a more dedicated system on the FE, but it might have been based on some RT-11 was well, not sure. Johnny

10 years, 10 months

Re-done HD video on the Osborne 1

by terry＠webweavers.co.nz

Wikipedia cites someone as saying..."Looks like a cross between a World War II field radio and a shrunken instrument panel of a DC-3"? Yes, but who says you need to be pretty to be a classic computer. For those who might be interested. Contains a shot of it running an external monitor at the end. http://youtu.be/m_FufKMd-lU

10 years, 10 months

IBM 5120. Who would be interested?

by dani＠tiensepoort.be

Hi all, I have a working IBM 5120 (BASIC version / type-model 5110-3) along with its 5103 printer. I want to part with it and am wondering where would be the best place to put it up for sale, auction, ... or just find someone who would take care of it. What is it still worth? I once saw someone trying to sell one on Ebay for $3000 but that was way too high... but I read somewhere else that someone was willing to pay $800 for it... As it is a heavy machine ("desktop" but about 50kg) it is not easily shipped and I am living in Belgium...So the main issue would be how to find someone local (even in the neighbouring European countries) who would be willing to pick it up. Or could it be shipped internationally? I thought it was a quite rare but is this correct? Any ideas? Thank you, Dani

10 years, 10 months

VAX 8000 Console?

by healyzh＠aracnet.com

What kind of PDP-11's did VAX 8000's use as Consoles, and what did their console software consist of. Zane -- healyzh at aracnet.com http://blog.zanesphotography.com http://www.flickr.com/photos/zanes-photography/

10 years, 10 months

Booting OS/8 on a PDP-8/E from a PC

by rick＠rickmurphy.net

At 05:16 AM 2/7/2014, Bob Vines wrote: >Can OS/8 run on pre-OMNIBUS machines, i.e., anything other than the >PDP-8/E, /M, /F, or /A? The DECmates use OS/278 (and WPS 8/278 & >COS-310) instead, but what about the pre-8/E machines? OS/8 will run on any 8 family machine with at least 8K of memory. You'll need 12K for some devices (those with 2 page system handlers). Some device handler writers didn't think about pre-8/E machines, and use instructions like BSW that aren't in pre-omnibus 8s. Those devices won't work. The VT-278 uses serial port hardware that doesn't behave like a real KL8E so needs OS/278 to work properly. Other than that, there's really not a huge difference between OS/8 and OS/278. -Rick

10 years, 10 months

MFM emulator update

by djg＠pdp8online.com

Slower than planned but I have now released the MFM emulator code and updated the MFM reading code. Needs more testing but it seems to work. http://www.pdp8online.com/mfm/mfm.shtml Next to test with will be my VAXStation II assuming I can figure out how to run it. I'm also staring on the PCB design to replace my wirewrap board. A couple of questions for people interested. Two people have said they are building wirewrap/protoboards themselves. 1) Gold edge fingers increase the board cost. Would people prefer a cheaper board with .1 headers like my wirewrap board that will need non standard cables or proper edge connectors for the drive emulation? 2) It might be possible to make the board emulate two drives. The system would have to be setup to use daisy-chained control cable since the board will only have one control connector and two data connectors. The second data cable would have to be .1 header. Is this enough interest to people to be worth trying to do?

10 years, 10 months

Booting OS/8 on a PDP-8/E from a PC

by bobvines00＠gmail.com

> Date: Thu, 6 Feb 2014 11:32:13 -0600 > From: Kyle Owen <kylevowen at gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: Booting OS/8 on a PDP-8/E from a PC [snip] > I've got a few spare locations in the handler. I'll look into the DP278 and > see what I can do. I hope one of my DECmates has the DP278! [snip] > Also, I had considered a handler version that operates on address 03/04 by > using some clever escape sequences, much like AT modem commands. You'd need > to use it with a special terminal program, or modify the server to output > non-handler messages to a pseudo-TTY that another terminal emulator is > connected to. This way, *anyone* with a PDP-8 that has just one > asynchronous serial card can boot OS/8! Can OS/8 run on pre-OMNIBUS machines, i.e., anything other than the PDP-8/E, /M, /F, or /A? The DECmates use OS/278 (and WPS 8/278 & COS-310) instead, but what about the pre-8/E machines? I'm looking forward to trying your sofware with my -8/E or /A! Bob

10 years, 10 months

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test-drb February 2014