test-drb

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101090 discussions

by jnc＠mercury.lcs.mit.edu

The following, which I just sent to TUHS, might be of intererest to some here. Noel ---- So, a while back I mentioned that I'd done tweaked versions of 'cp', 'mv', 'chmod' etc for V6 which retained the original modified date of a file (when the actual contents were not changed). I had some requests for those versions, which I have finally got around to checking and uploading (along with 'mvall', which for some reason V6 didn't have). I've added them to a couple of my V6 pages: http://www.chiappa.net/~jnc/tech/V6Unix.html#mvall http://www.chiappa.net/~jnc/tech/ImprovingV6.html#FileWrite Note (per the page) that the latter group all require the smdate() system call, which was commented out in 'vanilla' V6 (because using it confused the backup system); the page gives instructions on how to turn it back on.

7 years, 4 months

Yes there is a PDP 10 front panel and Kenbak on Ebay

by billdegnan＠gmail.com

Yes there is a PDP 10 front panel and Kenbak on Ebay and no, a "best offer" of $250 for the front panel will not be accepted. :-) Bill

7 years, 4 months

H786 power supply help wanted

by charlesmorris800＠centurytel.net

I have a PDP-11/23+ and the power supply (H786) "last ran when parked" a year or so ago. But there's no DC output at all today, and the fans are running so there is AC power... I also have the original H7861 that came with it, which had a blown chopper transistor. I couldn't find anything else bad, so I replaced the transistor and within a few seconds of running, it blew again. :( So I need some help - I've never been good at fixing switching supplies, not to mention the high-side hazards. The simplest solution would be just to replace it with a working unit. Anyone got one to sell, hopefully cheap? :) If not, can anyone fix one or both of mine? thanks! Charles

7 years, 4 months

Yes there is a PDP 10 front panel and Kenbak on Ebay

by couryhouse＠aol.com

any? relation? to? marlys nelson? at? river falls? Ed#In a message dated 4/3/2019 12:40:06 PM US Mountain Standard Time, cctalk at classiccmp.org writes: I mean that semi-sarcastically as this list probably knows better already. =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com On Wed, Apr 3, 2019 at 3:37 PM Anders Nelson <anders.k.nelson at gmail.com> wrote: > My god people, stop bidding! There are 6 days left. > -- > Anders Nelson > > +1 (517) 775-6129 > > www.erogear.com > > > On Wed, Apr 3, 2019 at 2:51 PM Bill Degnan via cctalk < > cctalk at classiccmp.org> wrote: > >> Yes there is a PDP 10 front panel and? Kenbak on Ebay >> >> and no, a "best offer" of $250 for the front panel will not be accepted. >> :-) >> >> Bill >> >

7 years, 4 months

2.11 BSD on an 11/93 with an CMD SCSI Module

by jnc＠mercury.lcs.mit.edu

> From: Bill Gunshannon > when I get it done I will be glad to provide you with a dump of the > root and usr partitions. I may be able to do SIMH disk images as well, > but I have been working mostly with E11. E11 disk images in files aren't anything odd, just a straight bit-bit copy of what would be in the parititon. (When I transfer RK05 partitions on E11 to SD cards for use in the QSIC, I just 'dd' the file holding the partition to the appropriate blocks on the SD card, and it comes out fine.) Dunno about SIMH disk imaages (I know the tapes images are tweaked). Noel

7 years, 4 months

2.11 BSD on an 11/93 with an CMD SCSI Module

by bill.gunshannon＠hotmail.com

Anybody had any luck with this configuration? I used VTServer to install it and everything works fine except for the very last step. It installs completely and boots from within VTServer with ra(0,0,0)unix. I issue the "dd if=/mdec/rauboot of=/def/rra0a count=1" and it completes successfully. But the disk still won't boot. I have tried it three times now with the same results. Suggestions? bill

7 years, 4 months

Burroughs BU4400 tape drive. What is it?

by mike＠fenz.net

Hi all, I just bought this Burroughs BU4400 tape drive: https://www.trademe.co.nz/Browse/Listing.aspx?id=1999913439 As the seller says, Google comes up empty. Seems strange, I would have expected some reference somewhere. Does anyone know anything about it? I'm going to pick it up this evening. It'd be superb as a display piece, but I'd be really keen to drive it with something and get it reading and writing. On that topic, are there any suggestions on how I could get my hands on a few tapes, preferably with a format this drive can read? The actual contents aren't important; even blanks would be OK, though not being able to get it reading before moving on to writing would make the project more difficult. Cheers, Mike

7 years, 4 months

The Retro Search is back up

by trash80＠internode.on.net

This will mostly interest TRS-80 enthusiasts on this list. Being a TRS-80 enthusiast myself it has been a long-time dream of mine to create a specialised TRS-80 search engine but creating a web facing search engine to crawl numerous sites, index and categorise was quite difficult on a low budget. For some time I used Google's Custom Search, the ad free paid version, but Google withdrew that product so it took be back to my starting point. I could have continued with the ad version but somehow I didn't want a page full of ads for users of this site. In any case doing it in my own right gave me a lot more granularity and control. So after much experimenting and trialling I finally produced the site in its own right and have just relaunched it. It is, in fact will always be, work in progress and I'm always on the lookout for more TRS-80 resources to add to the site and for any advice on omissions, corrections, additions etc. If you know any sites that I haven't included please use the contact form on the site to let me know. Check it out at theretrosearch.com Thank you!! Kevin Parker

7 years, 4 months

MV II help

by aek＠bitsavers.org

can anyone help this guy out? From: Benjamin Carlson <bcarlson at northpointdefense.com> Sent: Tuesday, April 02, 2019 9:12 AM Subject: Fwd: Re: MicroVAX Greta, my name is Ben Carlson and I am attempting to restore an old DEC MicroVAX II for the University of Oklahoma's collections department (see email below, Kerry is their curator). At this point, I believe I can get the hardware operating but I have no operating system for itas the Air Force insisted on destroying the hard drive. I have been able to replace the hard drive and the system has a tape drive and CD-ROM. Do you have any idea where I might find the OS? Also, any documentation would be great as well. Thanks for your help! Benjamin Carlson, PhD, CISSP Senior Research Engineer North Point Defense Rome, NY (315)571-0221 x 1010

7 years, 4 months

The story of... PDP-1

by lproven＠gmail.com

DEC archival docs tell the story of the genesis of the PDP-1: https://gordonbell.azurewebsites.net/digital/timeline/pdp-1story.htm -- Liam Proven - Profile: https://about.me/liamproven Email: lproven at cix.co.uk - Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven UK: +44 7939-087884 - ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

7 years, 4 months

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