Re: at&t unix pc

I do as well. I both use them AND collect them. I have about 6, and regularly take them to vintage computing expos. I'd be glad to take some parts off your hands at my own expense. There's someone over at comp.sys.3b1 asking for some as well: https://groups.google.com/forum/#!topic/comp.sys.3b

IBM 3330 Drive

Does anyone here have good technical experience with, or even better ACCESS to, an IBM 3330 compatible hard drive unit? (working or not). I'm getting more daring with my projects to attempt to read ancient magnetic flux transitions off of things, and I might have an opportunity to read a disk pac

Re: C64 to VGA

The design of many games on C64 are made according to the rasterlines of PAL/NTSC CRT, so I strongly do not advise using a flat screen 4/3 for a C64 or an Amiga because the rendering is disastrous unless you add a rasterlines generator. On 28/08/2017 03:30, Kevin Parker via cctalk wrote: HI

Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

On Sat, 26 Aug 2017, Dominique Carlier wrote: I have temporarily replaced the 2N6471 by an approaching equivalent, I makes the settings to get very exactly + 5V on both outputs and the machine restarted, finally! YES !! :-) [...] then 02, 03 !! 04 !!! 05 !! And then ... nothing, and since i

PSU Input Rectifier Question

My recently acquired DECstation 5000/240 has had a PSU failure. After replacing a couple of small capacitors with high ESR, I have been doing some basic checks to see which stages are working. My first step has been to check the output of the input rectifier, which has two large capacitors to smoot

Re: C64 to VGA

> On 28 Aug 2017, at 02:30, Kevin Parker via cctalk > wrote: > > HI guys - not really a C64 person (I've been given a couple over the years > and kept them rather than see them go to landfill). > > Trying to fix one up for a very good friend for a house warming present for > his games room (

Re: PSU Input Rectifier Question

> On Aug 28, 2017, at 7:49 AM, Rob Jarratt via cctalk > wrote: > > My recently acquired DECstation 5000/240 has had a PSU failure. After > replacing a couple of small capacitors with high ESR, I have been doing some > basic checks to see which stages are working. My first step has been to > che

VCF Midwest: 6502 Badges!

I am pleased to announce that the 12th year of the Vintage Computer Festival Midwest will feature a commemorative battery-powered "badge" computer, based on a real 65C02 microprocessor! The brains behind this creation are none other than our perennial guests Lee Hart, Daryl Rictor and Josh Bensado

Re: PSU Input Rectifier Question

On Mon, Aug 28, 2017 at 12:49 PM, Rob Jarratt via cctalk wrote: > My recently acquired DECstation 5000/240 has had a PSU failure. After > replacing a couple of small capacitors with high ESR, I have been doing some > basic checks to see which stages are working. My first step has been to > check t

Re: VCF Midwest: 6502 Badges!

Awesome! I can't make it this year, but I'm buying the deluxe kit :) I need to get on the "production" version of my 16-segment character display nametag... Thanks, Jonathan On Mon, Aug 28, 2017 at 10:38 AM, Jason T via cctalk wrote: > I am pleased to announce that the 12th year of the Vintage

Re: VCF Midwest: 6502 Badges!

Just a note, looks like your checkout is hitting US orders for $5 shipping ($40 total) on the deluxe kit). I still think that's totally reasonable. Thanks, Jonathan On Mon, Aug 28, 2017 at 11:00 AM, systems_glitch wrote: > Awesome! I can't make it this year, but I'm buying the deluxe kit :) > >

Fwd: HP ZX6000s for sale at VCFMW -$550

Dual 900mhz CPU, 4GB of memory, service processor card, includes rack rails. Tested working with OpenVMS 8.4. They all include at least one 36gb or 72GB hard disk. Presumably they'll take anything that's SCA80, but the sleds are special. I have 6 of these units. Let me know ahead of tim

Re: VCF Midwest: 6502 Badges!

On Mon, Aug 28, 2017 at 10:01 AM, systems_glitch wrote: > Just a note, looks like your checkout is hitting US orders for $5 shipping > ($40 total) on the deluxe kit). I still think that's totally reasonable. The page is Lee Hart's. Not sure if he's on this list (you out there, Lee??) I will for

RE: PSU Input Rectifier Question

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Tony Duell > via cctalk > Sent: 28 August 2017 15:52 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: PSU Input Rectifier Question > > On Mon, Aug 28, 2017 at 12:49 PM, Rob Jarra

Re: PSU Input Rectifier Question

> On Aug 28, 2017, at 12:52 PM, Rob Jarratt via cctalk > wrote: > > ... > Interesting that Tony mentions a Triac. There is indeed a triac. I am using > 220/240V input (being in the UK), would it be expected to double the voltage > in this case to 325V? No, 325V DC is what you'd get out of a

Re: PSU Input Rectifier Question

On Mon, Aug 28, 2017 at 5:52 PM, Rob Jarratt wrote: > I have posted some information along with a rough schematic here: > https://rjarratt.wordpress.com/2017/08/28/decstation-5000-model-240-h7878-possible-fault-found/. > Other information is in the previous post: > https://robs-old-computers.com

Other stuff for sale at VCFMW - PDP/11 34a and 23+, DECpc, Sun SPARCClassic, Dolch PAK, all working

PDP 11/34a - $600 - BA11-K chassis, 248KB MOS, M7856 serial, DU686 ESDI card, DELUA network card, and Pertec controller. I'll be powering this up at the show to verify it's still working, but it lived in A/C in a bedroom on the second floor since I last turned it on in 2011 and booted RSTS/E.

IEEE publishes "In Search of the Original Fortran Compiler" - Paul McJones

IEEE Annals of the History of Computing just published (in past few months) Paul McJones article "In Search of the Original Fortran Compiler". Many of us have been following Paul's efforts (and helping out in different ways) for the past 15 years, via cctalk and other mailing lists, the SPG, and

RE: IBM 3330 Drive

FWIW Paul Alan's Living Computer Museum has (or had) working PDP10's using DEC’s RP06's which are very similar to a 3330-11 (they are Memorex 677's with a bolt on DEC controller). They wil

RE: PSU Input Rectifier Question

> > I suspect those capacitors! > So do I, but I fear they are going to be really difficult to remove. They are both epoxied in two places, in both cases one of the glue dabs is pretty inaccessible. I am minded to just cut the bodies of the caps off (ie above their bases, cutting directly in

Re: PSU Input Rectifier Question

On Mon, Aug 28, 2017 at 7:30 PM, Rob Jarratt wrote: > So do I, but I fear they are going to be really difficult to remove. They are > both epoxied > in two places, in both cases one of the glue dabs is pretty inaccessible. I > am minded Are you sure it's epoxy? Every time I've had components g

Re: IEEE publishes "In Search of the Original Fortran Compiler" - Paul McJones

On 08/28/2017 10:43 AM, Shoppa, Tim via cctalk wrote: > IEEE Annals of the History of Computing just published (in past few months) > Paul McJones article "In Search of the Original Fortran Compiler". > > Many of us have been following Paul's efforts (and helping out in different > ways) for the

Re: IEEE publishes "In Search of the Original Fortran Compiler" - Paul McJones

> From: Tim Shoppa > IEEE Annals of the History of Computing just published (in past few > months) Paul McJones article "In Search of the Original Fortran Compiler". Congratulations to Paul and everyone who helped in this magnificant effort. To bad they couldn't find a copy of the or

RE: PSU Input Rectifier Question

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Tony Duell > via cctalk > Sent: 28 August 2017 19:35 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: PSU Input Rectifier Question > > On Mon, Aug 28, 2017 at 7:30 PM, Rob Jarratt

Re: PSU Input Rectifier Question

> If anyone has any good ideas for a "clean" way to remove them I am all ears. Fully unsoldering the leads and rocking back and forth usually does the job. - Original Message - From: "Rob Jarratt via cctalk" To: "'Tony Duell'" ; "'General Discussion: On-Topic and Off-Topic Posts'" Sen

P?S/8 ahd SIMH development.

It's not like ye olden days; I was able to actually create two Google Groups without kissing any rings or horsetrading minutia about the process of shutting up some self-appointed net.cop on the control group. After getting much of my life back in order and finally joining what some euphemisticall

Re: IEEE publishes "In Search of the Original Fortran Compiler" - Paul McJones

Related to this, did Bob Bemer ever preserve a copy of IBM COMTRAN source? For those unaware of it, this was one of the predecessors of COBOL. While thinking about Bob and his contributions to ASCII, I'm reminded that one of the constraints imposed on the FORTRAN language was the lack of what we

Re: IEEE publishes "In Search of the Original Fortran Compiler" - Paul McJones

> On Aug 28, 2017, at 3:19 PM, Chuck Guzis via cctalk > wrote: > > ... > There were two version of the character set--the "commercial" version > lacked parentheses, for example. Thank heavens that most 026s were > equipped with the "scientific" set. If you were unfortunate enough to > have to

Kermit available for the JAIR 8080

I got Kermit working on my JAIR 8080 which powers my IMSAI! It wasn't as simple as I expected, turned out I had a small hardware problem which Josh Bensadon helped me fix. I've posted my changes to Kermit along with a LASM compatible cross-assembler, source and tools are available here: http:

RE: PSU Input Rectifier Question

> > > If anyone has any good ideas for a "clean" way to remove them I am all ears. > > Fully unsoldering the leads and rocking back and forth usually does the job. > Indeed. That is my normal method. But in this case the epoxy and the fact that the base of the caps are in contact with the boar

Re: PSU Input Rectifier Question

On Aug 28, 2017, at 5:12 PM, Rob Jarratt via cctalk wrote: >> >>> If anyone has any good ideas for a "clean" way to remove them I am all ears. >> >> Fully unsoldering the leads and rocking back and forth usually does the job. >> > > Indeed. That is my normal method. But in this case the epox

RE: PSU Input Rectifier Question

> Rob, I assume there isn't room (front or back of the circuit board) to just cut > one of the leads, and wire in a replacement in parallel to the old one, leaving > the old one in place? That's not a good answer if the old one is leaking, but if > it's still intact, cutting one lead takes it out o

RE: PSU Input Rectifier Question

On Tue, 29 Aug 2017, Rob Jarratt via cctalk wrote: > Not really no. The base of the capacitors is actually touching the board, so > I can't get under it to cut anything anyway, which is why I am thinking I > would have to cut the tops off them. Even if I could cut one of the leads, I > can't solde

Re: C64 to VGA

On Mon, Aug 28, 2017, Dominique Carlier via cctalk wrote: > The design of many games on C64 are made according to the rasterlines of > PAL/NTSC CRT, so I strongly do not advise using a flat screen 4/3 for a C64 > or an Amiga because the rendering is disastrous unless you add a rasterlines > generat

Re: C64 to VGA

I just mentioned the rasterlines/scanlines generated via software on modern PC's in the context of game emulators with Mame. This is of course not applicable in the situation of a C64 connected to a VGA 4/3 LCD, except if you you are using an intermediate hardware like that: http://arcadeforge

Re: C64 to VGA

On Tue, Aug 29, 2017, Dominique Carlier via cctalk wrote: > I just mentioned the rasterlines/scanlines generated via software on modern > PC's in the context of game emulators with Mame. This is of course not > applicable in the situation of a C64 connected to a VGA 4/3 LCD, except if > you you are

Re: HP ZX6000s for sale at VCFMW -$550

I'm very interested, but sadly enough I'm in urban Abroadshire. Let me know if you've got some left and are willing to ship internationally. /Y On Mon, 28 Aug 2017, 5:26 pm Julian Wolfe via cctalk wrote: > Dual 900mhz CPU, 4GB of memory, service processor card, includes rack > rails. > > Teste

Re: VCF Midwest: 6502 Badges!

On Mon, Aug 28, 2017 at 10:01 AM, systems_glitch via cctalk < cctalk@classiccmp.org> wrote: > Just a note, looks like your checkout is hitting US orders for $5 shipping > ($40 total) on the deluxe kit). I still think that's totally reasonable. > Same here, can't go to the show, but did buy a kit,

Re: Available at VCFMW: Varity of Qbus boxes, anything else...

I also trade for coins... On Sun, Aug 27, 2017 at 2:46 PM, Paul Anderson wrote: > I have a variety of Q-bus boxes that I can configure to order and deliver > at VCFMW if anyone needs one. > > Also a wide variety of DEC parts, boards, options, VTs and printers. A > lot of 3100s, 3000 Alphas, and

Re: VCF Midwest: 6502 Badges!

cant go to the show but would like a built one my soldering hands are poor in age.Ed# In a message dated 8/28/2017 9:27:10 P.M. US Mountain Standard Time, cctalk@classiccmp.org writes: On Mon, Aug 28, 2017 at 10:01 AM, systems_glitch via cctalk < cctalk@classiccmp.org> wrote: > Ju

Re: C64 to VGA

I do not think so, not sure but it would be more a semi transparent mask over the native rendition. On 29/08/2017 05:32, Eric Christopherson via cctalk wrote: On Tue, Aug 29, 2017, Dominique Carlier via cctalk wrote: I just mentioned the rasterlines/scanlines generated via software on modern

RE: VCF Midwest: 6502 Badges!

>-Original Message- >From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Vince >Mulhollon via cctalk >Sent: Monday, August 28, 2017 1:31 PM >To: General Discussion: On-Topic and Off-Topic Posts >Subject: Re: VCF Midwest: 6502 Badges! > >On Mon, Aug 28, 2017 at 10:01 AM, system