Re: Warren Stearns info.

From: Doug Ingraham via cctalk: Friday, August 11, 2017 3:53 PM He has been working on a Flip Chip tester for a couple of years now and has been using a bread boarded early version of this for several years. I am hoping I can find someone with the knowledge and drive to continue working on his

Re: Warren Stearns info.

On 08/11/2017 03:53 PM, Doug Ingraham via cctalk wrote: > Warren Stearns passed away early on Sunday August 6th. He suffered a heart > attack on Friday the 4th and never recovered from that. Warren was an avid > collector and maintainer of DEC PDP-8 equipment. He and I met almost 43 > years ago

Warren Stearns info.

Warren Stearns passed away early on Sunday August 6th. He suffered a heart attack on Friday the 4th and never recovered from that. Warren was an avid collector and maintainer of DEC PDP-8 equipment. He and I met almost 43 years ago while in college and have kept in touch all this time because

Re: Floppy Disk Images

I've got the Cromemco WDI and WDI-II S100 controllers for both the 8" 7xxx series and the 5" 5xxx series if they're of any use to you; as with most Cromemco stuff the documentation is also available. If they're in fact Cromemco formatted there shouldn't be a problem, assuming they still work;

Re: Floppy Disk Images

On 8/11/17 12:12 PM, Mattis Lind via cctalk wrote: > There is a very nice MFM-emulator by David Gesswein. It works very well. I've dumped several hundred 5" drives with it which resulted in added support for many different controllers in his decoder. 8" shugart interface drives are rising on

Re: Floppy Disk Images

On 08/11/2017 10:58 AM, Marvin Johnston via cctalk wrote: > I seem to recall this topic has been brought up a couple of times > over the past 20 years or so that ClassicCmp has been in existance, > but I can't find the info. And technology has advanced :). > > I have probably at least 10,000

Re: Floppy Disk Images

On Fri, Aug 11, 2017 at 12:08 PM, Christian Groessler via cctalk < cctalk@classiccmp.org> wrote: > Hi, > > On 08/11/17 19:58, Marvin Johnston via cctalk wrote: > >> And just to make it interesting, I have a number of hard disks (5mb to >> maybe 20mb) of both 5.35" and 8". I've got several Lobo

Re: Floppy Disk Images

fredag 11 augusti 2017 skrev Christian Groessler via cctalk < cctalk@classiccmp.org>: > > > > a related question (wanted to ask since long, but this post reminded me > now): > > Is there a similar tool like IMD to dump (MFM-) hard disks? There is a very nice MFM-emulator by David Gesswein. It

Re: Floppy Disk Images

Hi, On 08/11/17 19:58, Marvin Johnston via cctalk wrote: And just to make it interesting, I have a number of hard disks (5mb to maybe 20mb) of both 5.35" and 8". I've got several Lobo drives 8" hard drives that I would love to get the information from since they came from Lobo Drives when

Floppy Disk Images

I seem to recall this topic has been brought up a couple of times over the past 20 years or so that ClassicCmp has been in existance, but I can't find the info. And technology has advanced :). I have probably at least 10,000 floppy disks of many flavors (formats, hard sector, soft sector,

pdp-8/e restoration update.

Hi List Well I think I've found why the RX01 is not responding. The device address (75) is not getting decoded on the controller because the CPU does not assert BUS I/O PAUSE L Which it should do I think when it sees an IO instruction. Do I have this right? Rod Smallwood -- Wanted

Re: VT50 print set

On 8/11/2017 3:13 AM, Mattis Lind via cctech wrote: I found a VT50 print set in the heaps and recognized there were no copy on bitsavers so I ran it through a scanner. https://dl.dropboxusercontent.com/u/96935524/Datormusuem/VT50/VT50-print-set.pdf Compared to the VT52 print set that is online

Re: The SPERRY UNIVAC UTS 40 system + 8406 double-sided diskette subsystem : Restoration

On 8/11/17 5:40 AM, Dominique Carlier via cctalk wrote: > Hi all, > > I continued my investigations about the power supply if the 8406 subsystem. > Here is what I observe: > > With the PSU in charge, I mean with a disk drive connected but without the > +24V : > +5V -5V +12V -12V: OK > If I

Re: Disk imaging with IMD - question

So based on this entire thread I should probably hunt down some Shugart 850s to be safe. Rich Sent from Verizon/AOL Mobile Mail On Friday, August 11, 2017, Christian Corti via cctalk wrote: On Thu, 10 Aug 2017, camiel.vanderhoeven--- via cctalk wrote: > My workhorse

Re: The SPERRY UNIVAC UTS 40 system + 8406 double-sided diskette subsystem : Restoration

Hi all, I continued my investigations about the power supply if the 8406 subsystem. Here is what I observe: With the PSU in charge, I mean with a disk drive connected but without the +24V : +5V -5V +12V -12V: OK If I connect the +24V to the drive this is at this moment than the power supply

Re: DEC Unibus, Omnibus and TTL Flip-Chips sought for!

2017-08-11 11:07 GMT+02:00 Rod Smallwood via cctalk : > Interesting - Card reader, Plotter and display controller > Absolutely. I have a Documation M200, Calcomp drumplotter and a DEC vector screen that would be nice to interface. My PDP-8/L has a BA08 expansion box with a

Re: DEC Unibus, Omnibus and TTL Flip-Chips sought for!

Interesting - Card reader, Plotter and display controller Rod On 11/08/2017 09:24, Mattis Lind via cctalk wrote: Hello! I am looking for the following boards if anyone have them available: M829 / M8290 / M8291 M843 M842 M714 M716 A607 M701 M023 M704 /Mattis -- Wanted one pdp-8/i rocker

DEC Unibus, Omnibus and TTL Flip-Chips sought for!

Hello! I am looking for the following boards if anyone have them available: M829 / M8290 / M8291 M843 M842 M714 M716 A607 M701 M023 M704 /Mattis

Re: Disk imaging with IMD - question

On Thu, 10 Aug 2017, camiel.vanderhoeven--- via cctalk wrote: My workhorse 8" drives are some Ye-Data half-height ones. I still have about a dozen of them as NOS. I believe they were made in 1993. If you mean the Y-E DATA YD-180, well, they are QumeTrack 242 ;-) Christian

RE: VT50 print set

Metric dimensions? Isn't that rather unusual for DEC? -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind via cctalk Sent: Friday, August 11, 2017 3:13 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: VT50 print set I found a

Re: VT50 print set

nice find... On Fri, Aug 11, 2017 at 2:13 AM, Mattis Lind via cctalk < cctalk@classiccmp.org> wrote: > I found a VT50 print set in the heaps and recognized there were no copy on > bitsavers so I ran it through a scanner. > > https://dl.dropboxusercontent.com/u/96935524/Datormusuem/ >

VT50 print set

I found a VT50 print set in the heaps and recognized there were no copy on bitsavers so I ran it through a scanner. https://dl.dropboxusercontent.com/u/96935524/Datormusuem/VT50/VT50-print-set.pdf Compared to the VT52 print set that is online this one contain plenty of manufacturing information