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101090 discussions

Which Dec Emulation is the MOST useful and Versatile?

by computerdoc＠sc.rr.com

Hi DEC Enthusiast's, If I were to have to decide on just one model DEC PDP system to run in a DEC Emulator, which one would be the most useful, versatile and has the most software available for it? I have only ever used a real PDP-8/e system way back in high school so I'm not up to par on any other model of DEC PDP system and I only know BASIC on the PDP-8/e so not much there either. I hear a lot about the PDP-11. I found out that there were 16 major PDP models at one time so I'm not too sure which one to pick. I built Oscar Vermeulen's PiDP-8/I which I'm waiting on 1 part for. Other than that project which is in a holding pattern at the moment, I have no other PDP anything running in any form. Back in the day when Bill Gates and company 1st started out, I had always wondered how they developed their very 1st software program - Altair Basic. I was pleasantly surprised one day when I saw a B/W photo of a young Bill Gates bending over the operator at what looked like a very small computer. Maybe it was just a terminal. I don't remember. I understand they did software development on a DEC PDP of some sort. Finding this out regenerated my interest in the DEC PDP line of computers. I have many projects in the works already so I decided to setup a software emulation of just one of the DEC PDP models. I have heard a lot about the PDP-11 which if the information I read is correct was 16-bits. My PiDP-8/I is 12 bits. I understand the PDP 10 was 36-bits and the PDP-15 was 18-bit. The PDP-11 is the model I hear the most about. I also have some experience on some version of a VAX when I was in the Air Force so I'm thinking of getting a VAX emulation going at some point too. So if I'm going to do this, what suggestions, pointers, experiences, etcetera do you guys have for me. I am very interested in the DEC PDP equipment though next to no experience so I have no basis to make a decision. This is a serious request so I would definitely like to hear what you all have to say. If you have read this far, thank you. Take care my friends. Kip Koon computerdoc at sc.rr.com http://www.cocopedia.com/wiki/index.php/User:Computerdoc

8 years, 3 months

VCF PNW (Seattle) exhibitor registration is open

by cctalk＠snarc.net

Hello cctalkers! Join us as an exhibitor for the inaugural Vintage Computer Festival Pacific-Northwest, Feb. 10-11, at the Living Computer Museum in Seattle. http://www.vcfed.org/registration/exhibitor_register-online.php?event_id=5 ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)3 educational non-profit evan at vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation

8 years, 3 months

Convex Computer Corporation manuals

by unibus＠gmail.com

Anybody want some Convex Computer Corporation manuals on microfiche. The titles are: - CONVEX C Guide - CONVEX C Optimization Guide - CONVEX FORTRAN User's Guide - CONVEX FORTRAN Reference Manual - CONVEX FORTRAN Optimization Guide - CONVEX VECLIB User's Guide - CONVEX LSQPACK User's Guide Free to a good home or it will be plastic recycling

8 years, 3 months

Is it really that quiet out there?

by robert626001＠gmail.com

The last one that I received was October 20th. Robert On Fri, Oct 20, 2017 at 2:27 PM, jim stephens via cctalk <cctalk at classiccmp.org> wrote: > Last one of those was a couple weeks ago. Then there were a bunch of backed > up ones. > > List has been steady and in real time (from what I've seen). > thanks > Jim > > > On 10/20/2017 11:30 AM, Chuck Guzis via cctalk wrote: >> >> Lately, I've received >> message "belches" > >

8 years, 3 months

HP 7907 read preamp question

by cclist＠sydex.com

On 10/19/2017 05:00 PM, Jon Elson wrote: > On 10/19/2017 06:44 PM, Chuck Guzis via cctalk wrote: >> My question for those knowledgeable with this drive is what's the >> downside of adjusting the gain to create an output of, say, 7V P-P? >> >> > Well, you might have to turn it back down for newly recorded tapes. But, > if you are using it only for recovery of old data, maybe no downside at > all. > > But, there are so many defects in old tapes.? There's print-through, > wrinkles from the tape pack scrunching, weave, oxide flaking, dirt > buildup, and maybe some others. No, it turns out the answer is to set the preamp gain at spec. It appears to do nothing but create more problems if turned up higher than that. It was worth a try. --Chuck

8 years, 3 months

Cloning A Hard Disk Over The Network Using Ultrix

by robert.jarratt＠ntlworld.com

I have a couple of hard disks I want to make dd copies of. I have Ultrix running on my DECstation 5000/240 with the disk I want to clone attached to it. The trouble is that I don't have enough disk space on the machine to clone the disk and then grab the image using FTP. I have been trying to find a way to pipe the dd output over the network to a SIMH Ultrix machine that has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem to take input from standard input. I have looked at cpio, but that too appears not to accept input from standard input. Unix is not my strong point. Are there any other ways I could pipe the dd output across the network to a machine that has enough disk space? Thanks Rob

8 years, 3 months

Pine (was: Re: cctalk Digest, Vol 17, Issue 20)

by rlloken＠telus.net

On Sun, 22 Oct 2017, Sean Conner via cctalk wrote: By gum! Alpine does indeed translate the 'A' into a '?' and I never noticed. It seems that my tiny mind simply translated the character and moved on. > I have: > > LANG=en_US.UTF-8 > LC_COLLATE=C > > as part of my environment, and I'm using a font that supports UTF-8... And how does one know that a font supports UTF-8? And yes UTF-8 has been around for decades but as an English speaker I didn't have to think about unicode and locale and stuff like that. -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years, 3 months

Pine (was: Re: cctalk Digest, Vol 17, Issue 20)

by fred＠MISER.MISERNET.NET

> Date: Thu, 19 Nov 2015 21:41:53 -0500 (EST) > From: ethan at 757.org > Subject: Re: Could someone make this topic go away? > Message-ID: <Pine.LNX.4.64.1511192141030.32673 at users.757.org> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > Am I the only one left using Pine!? > > I get odd looks when I'm checking email from my cell phone. No you are not. I use (al)pine on my OpenVMS system here as well as my main Linux host. I have mail going back to 2004 here and since 1996 at another public access Unix host I use. It's great when I'm out of town and can ssh in from my phone and check the mail. :) Pine does most everything I need without having to worry about malware, phishing, etc ... the beauty of text. Fred

8 years, 3 months

CDP1801

by vintagecomputer＠bettercomputing.net

I'm going to put it on my list of projects to create a CPU card for my Microtutor that uses the 1802 instead I think.? I can get some blue PCB stock.? As far as I understand the 1802 is fully backward compatible. Maybe the 1801s will show up on day.? I've found all kinds of chips I was told were impossible to locate. Sent from my Samsung device -------- Original message -------- From: Steven Feinsmith <steven.feinsmith at gmail.com> Date: 2017-10-20 7:32 PM (GMT-08:00) To: Brad H <vintagecomputer at bettercomputing.net>, "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: CDP1801 RCA 1801 disappeared from face of Earth forever... You would be better off to purchase at: http://www.sunrise-ev.com/membershipcard.htm to use 1802. The 1802 was very successful microprocessor that replaced 1801 because it required to have a pair of chips to work together. I believe I saw 1801 was more than 30 years ago. Good luck! Steven On Wed, Oct 18, 2017 at 9:45 PM, Brad H via cctalk <cctalk at classiccmp.org> wrote: Hi there, I just purchased an RCA Microtutor minus the rather important CPU card.? I can recreate the card but I expect locating the 1801 chips will be difficult.? I am just posting this in various forums in case anyone has any leads on where I might find either the complete card or the required chips to make a replacement.? I'm wondering what, if any devices were built with the 1801 that I might be able to scrounge from. Thanks again, B

8 years, 3 months

Giving away my collection to someone just starting out in the hobby

by drlegendre＠gmail.com

Steve, I don't think I qualify to receive the whole shebang, nor would I have room, but I will gladly take any box(es) un-tested / for parts / etc. C-64 hardware that you would care to offer. I endeavor to repair CBM machines, primarily C-64s and peripherals, and I am basically out of parts. I have almost a dozen machines stacked up that can't run for want of various parts... I'm in St. Paul, MN, and unable to work due to total disability (stage 5 kidney disease. among other things). Best, Bill Layer On Fri, Oct 13, 2017 at 1:25 AM, Digital Aeon via cctalk < cctalk at classiccmp.org> wrote: > After many years of collecting, Im tired of moving it all > > So ive picked out 4 or 5 systems that mean alot to me. And i want to > pass the rest of the collection onto someone starting out in the hobby that > wouldnt otherwise have the funds to get some of the stuff I have. > > So if there is anyone out there starting out and wants what I have I will > gladly hand it over to them free of charge. I would like to see this go > to someone who doesn't have anything. > > > I have apple, commodore, sun, x86 you name it I got it. about 4 > truckloads full if not more. > > Im located in Mid Michigan > > Steve >

8 years, 3 months

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