Re: Speaking of reproductions..

On 10/24/2015 2:21 AM, Brad wrote: > I was checking out the Altair 8800 kit online (really cool). But I am > hoping to one day find a kit or plans to build a Mark-8 replica, since I'm > so deep into Radio Electronics features. I know there was a kit out there > (Obtronix?). Was it any good? Do

Re: Common Maxtor MFM drive failure mode -- any ideas?

On 10/24/15 10:15 AM, Josh Dersch wrote: there are a few ICs surface-mounted to the flat ribbon cable running to the head assembly. Those are the head preamps. You should be able to scope out if there is anything coming out of them.

PROMs and EPROMs, specifically 2332/2532/2732

Hi folks, PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed thanks to a hot air gun. Holes cleaned and I have new turned pin sockets for everything I've removed which I'll be fitting this afternoon. Since the ROMs came out OK I'm trying to dump them using my Pinmaster48

Re: PROMs and EPROMs, specifically 2332/2532/2732

On 10/24/2015 5:43 AM, Adrian Graham wrote: Hi folks, PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed thanks to a hot air gun. Holes cleaned and I have new turned pin sockets for everything I've removed which I'll be fitting this afternoon. Since the ROMs came out

Re: piggybacked TSOP memory chips

On 13/09/15 08:33, d...@661.org wrote: Someone on #classiccmp showed pictures of a DDR SDRAM module with piggybacked TSOP memory chips. I've never heard of doing this with surface-mounted devices. http://imgur.com/a/CGk8h I have, within easy reach, a 1GB SDRAM (168-pin) SDRAM that does

Re: Common Maxtor MFM drive failure mode -- any ideas?

On 10/24/15 11:40 AM, tony duell wrote: Most likely those ICs are head switch/preamp devices and the servo head preamplifier. They are very likely to be custom. Silicon Systems was a common supplier in the 80s to mid-90s, which is why their Storage Products data books have been scanned.

Re: Common Maxtor MFM drive failure mode -- any ideas?

On 10/24/15 11:40 AM, tony duell wrote: That's pretty much what I figured. I took a closer look at one of the other dead XT2190s I have that I'd opened up to inspect awhile back and there are a few ICs surface-mounted to the flat ribbon cable running to the head assembly. I suppose it's likely

RE: looking for Siemens T100 telexes in the US

Simon, cctech is moderated. -Rik -Oorspronkelijk bericht- Van: "simon" Verzonden: ‎24-‎10-‎2015 20:54 Aan: "cctalk@classiccmp.org" Onderwerp: looking for Siemens T100 telexes in the US As my mail to cctech dod'nt came through, here a mail only

Save a poor printing terminal

This unfortunate creature has seen ill-storage and a slight mouse infestation and bears the rusty scars of time and moisture. But with your kindness and patience, it will have the chance to bound joyfully through fields of Greenbar once again, bringing joy and the printed word/ASCII art to all

Couplers for Sun DB13W3<->VGA DE15 adapter

I have a Sun machine with a 13W3 framebuffer output, which is connected via a Monoprice VGA adapter to my LCD monitor. It works great, but the ends of the standoff bolts without nuts come together where the VGA cable meets the adapter; that is to say, the VGA cable's nuts are on the far side of

Re: PROMs and EPROMs, specifically 2332/2532/2732

On 24/10/2015 19:18, "John Robertson" wrote: > On 10/24/2015 5:43 AM, Adrian Graham wrote: >> Hi folks, >> >> PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed >> thanks to a hot air gun. Holes cleaned and I have new turned pin sockets for >>

Re: Retro Reproduction.

On Fri, 23 Oct 2015, Jon Elson wrote: On 10/23/2015 04:32 PM, geneb wrote: On Fri, 23 Oct 2015, Jon Elson wrote: I sell some hardware for motion control based on this software, and have sold over 300 controller-interfaces. A popular one seems to be using MachineKit on a Beagle Bone

RE: Common Maxtor MFM drive failure mode -- any ideas?

> > That's pretty much what I figured. I took a closer look at one of the > other dead XT2190s I have that I'd opened up to inspect awhile back and > there are a few ICs surface-mounted to the flat ribbon cable running to > the head assembly. I suppose it's likely that one of these has failed, >

looking for Siemens T100 telexes in the US

As my mail to cctech dod'nt came through, here a mail only to the cctalk list. sorry if it becomes a double post. Hi All, I was contacted via the greenkeys list for my spare parts of the two T100 telexes, but I think it should be possible to obtain them in the states. Is there someone

RE: Miniscribe "bricks" (was Re: Common Maxtor MFM drive failure mode -- any ideas?)

The MiniScribe brick story is told at: http://chmhdd.wikifoundry.com/page/MiniScribe+files+bancruptcy The apocryphal tale is that when the Maxtor President visited his then recently acquired MiniScribe facilities he was shown buildings 1,2, 3, and 5. When asked what happened to building 4 he

Substituting DSHD for DSDD disks (or DS2D if you prefer)

I know Chuck Guzis has written about this, but I don't see that he's done so publicly in the last few years, so I thought I'd ask here about his and others' views on the perennial question of whether (some) 3.5" DSHD disks can be reliably used in DSDD-only drives. The oft-repeated claim is that

tool for installing pin in PCB extractors?

What tool does one use to install the metal pin into a plastic PCB extractor, e.g., the Bivar CP-36 or Keystone 8642? I don't yet have any uninstalled extractors on hand, but I'm going to need some for a project. Looking at PCBs with extractors already installed has not made it obvious to me how

Re: Miniscribe "bricks" (was Re: Common Maxtor MFM drive failure mode -- any ideas?)

On Sat, Oct 24, 2015 at 2:36 PM, Tom Gardner wrote: > The MiniScribe brick story is told at: > http://chmhdd.wikifoundry.com/page/MiniScribe+files+bancruptcy > > The apocryphal tale is that when the Maxtor President visited his then > recently acquired MiniScribe

Re: Retro Reproduction.

On 10/24/2015 08:01 PM, geneb wrote: I wouldn't mind finding step-by-step instructions on how to refit a 2000 model year MaxNC 10 open loop mill. The controller it has now is parallel port based and the control software is DOS only. Well, this is a stepper-driven machine? Are the stepper

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 10/24/2015 06:59 PM, Eric Christopherson wrote: I know Chuck Guzis has written about this, but I don't see that he's done so publicly in the last few years, so I thought I'd ask here about his and others' views on the perennial question of whether (some) 3.5" DSHD disks can be reliably used

Re: Oddball question: really small terminals

yes we have one line LED letter terminals used for Deaf and hard of Hearing. we will buy more of them too. do you have any of them? ASCII or BAUDOT either for our Deaf Telecom diaplay. Drop me a line offlist thanks Ed Sharpe archivist for SMECC In a message dated 10/24/2015 8:44:59

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On Sat, Oct 24, 2015 at 9:14 PM, Fred Cisin wrote: > On Sat, 24 Oct 2015, Eric Christopherson wrote: > >> I know Chuck Guzis has written about this, but I don't see that he's done >> so publicly in the last few years, so I thought I'd ask here about his and >> others' views

Re: tool for installing pin in PCB extractors?

On 10/24/2015 09:49 PM, Eric Smith wrote: What tool does one use to install the metal pin into a plastic PCB extractor, e.g., the Bivar CP-36 or Keystone 8642? There are expensive tools for the purpose, but I've always just used a pair of long-nose pliers to compress the end of the spring pin

Re: PROMs and EPROMs, specifically 2332/2532/2732

Probably a silly question, but I assume that if you're using a 28-pin socket you are inserting it aligned at the end *opposite* pin 1, with pin numbers offset by 2 (ie. 2x32 pin1 is 2764/256 pin 3, etc.)? m - Original Message - From: "Adrian Graham"

Oddball question: really small terminals

For reasons too abstruse to explain in detail I'm on the lookout for terminals that are, physically, really small - especially serial and coax 3270, and possibly twinax 5250. Yes you could do things with small laptops and PDAs with PCMCIA cards and adapters and software - I know a guy who kept a

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On Sat, 24 Oct 2015, Eric Christopherson wrote: I know Chuck Guzis has written about this, but I don't see that he's done so publicly in the last few years, so I thought I'd ask here about his and others' views on the perennial question of whether (some) 3.5" DSHD disks can be reliably used in

Re: Oddball question: really small terminals

16 char x 1 line is small enough? :) Em 25/10/2015 01:34, "Chuck Guzis" escreveu: > On 10/24/2015 08:10 PM, Cindy Croxton wrote: > >> How small is "really small"? IBM made a terminal with a 5" screen for >> the 4704 banking systems. http://frente-cajas.blogspot.com/ >> > > I've

Re: Oddball question: really small terminals

The Epson RC-20 wrist watch (30 years ago) had serial port, RAM, ROM, and sort of a Z80. But, nobody ever brought up CP/M on it.

Re: tool for installing pin in PCB extractors?

On Sat, 24 Oct 2015, Chuck Guzis wrote: On 10/24/2015 09:49 PM, Eric Smith wrote: What tool does one use to install the metal pin into a plastic PCB extractor, e.g., the Bivar CP-36 or Keystone 8642? There are expensive tools for the purpose, but I've always just used a pair of long-nose

Re: tool for installing pin in PCB extractors?

On Sat, Oct 24, 2015 at 11:20 PM, Chuck Guzis wrote: > There are expensive tools for the purpose, but I've always just used a pair > of long-nose pliers to compress the end of the spring pin slightly to get it > started, then drive it home with a soft-faced mallet. Make sure

RE: Oddball question: really small terminals

How small is "really small"? IBM made a terminal with a 5" screen for the 4704 banking systems. http://frente-cajas.blogspot.com/ -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mike Ross Sent: Saturday, October 24, 2015 8:55 PM To: General

RE: Oddball question: really small terminals

On Sat, 24 Oct 2015, Cindy Croxton wrote: How small is "really small"? IBM made a terminal with a 5" screen for the 4704 banking systems. http://frente-cajas.blogspot.com/ And the Atari Portfolio runs a version of DR-DOS. And the Poqet ran MS-DOS. Both have serial ports available. Both will

Re: Oddball question: really small terminals

On Sat, Oct 24, 2015 at 8:39 PM, Alexandre Souza < alexandre.tabaj...@gmail.com> wrote: > 16 char x 1 line is small enough? :) > Em 25/10/2015 01:34, "Chuck Guzis" escreveu: > > > On 10/24/2015 08:10 PM, Cindy Croxton wrote: > > > >> How small is "really small"? IBM made a

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 10/24/2015 09:06 PM, Eric Christopherson wrote: Fascinating -- I didn't know there were AC and DC magnetic fields. How strong is "very strong", and would the library device I mentioned count toward "an AC erase"? Should I assume that just doing an AC erase would be insufficient? The AC

Re: Speaking of reproductions..

On Sat, 24 Oct 2015, Brad wrote: I was checking out the Altair 8800 kit online (really cool). But I am hoping to one day find a kit or plans to build a Mark-8 replica, since I'm so deep into Radio Electronics features. I know there was a kit out there (Obtronix?). Was it any good? Do I

Pinging Oscar Vermeulen: Blinkenlight API for PiDP-11/70

Oscar, I forgot to ask for your private email on VCFB, so I use this public channel. Can you sell me a PiDP8, so I can port my Blinkenlight Api Server to the platform of the upcoming 11/70? I'd like to have it as preassembled as possible, 'cause my schedule is very tight.

Re: Speaking of reproductions..

On 24/10/2015 08:21, Brad wrote: I was checking out the Altair 8800 kit online (really cool). But I am hoping to one day find a kit or plans to build a Mark-8 replica, since I'm so deep into Radio Electronics features. I know there was a kit out there (Obtronix?). Was it any good? Do I

Re: Retro Reproduction 2

Hello Tony Well like a lot of things its not always simple. Lets deal with the GT40 first. Well I know why I picked the car as opposed to the display. In the late 1960's I did what was called a sandwich course. Part of the time at work and part at college. I worked in the test lab of

Re: The Internet & our hobby

On Sat, Oct 24, 2015 at 08:58:58AM +0200, Johnny Billquist wrote: > On 2015-10-24 00:22, ANDY HOLT wrote: > > > > Don't get me wrong... Emacs isn't a bad OS... Too bad there isn't a decent > > text editor for it. > > > > > > Sent from my Verizon Wireless 4G LTE smartphone > > > > > > Ah,

Re: Retro Reproduction 2

Er.. Wow! Ok the process mimics the original production system. I draw the panel using Inkscape because it runs on windows and Linux, produces .svg (scalable vector graphics) files and its free!! As sources I use photographs, Scans (The best way because there are no lens errors) and

Re: The Internet & our hobby

On 2015-10-24 00:22, ANDY HOLT wrote: Don't get me wrong... Emacs isn't a bad OS... Too bad there isn't a decent text editor for it. Sent from my Verizon Wireless 4G LTE smartphone Ah, but nowadays who cares about "Eight Megabytes and Continual Swapping" (well, the first part anyhow)

Speaking of reproductions..

I was checking out the Altair 8800 kit online (really cool). But I am hoping to one day find a kit or plans to build a Mark-8 replica, since I'm so deep into Radio Electronics features. I know there was a kit out there (Obtronix?). Was it any good? Do I need someone to make a new kit or is the

RE: Retro Reproduction 2

> The UK is full of small companies making and repairing all kinds of past > products. > > For example the MGB GT (a much loved British sports car). The factory > stopped making them in the early 1980's > However a few guys bought the press tools and have been turning out two > or three body