test-drb

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101090 discussions

by blstuart＠bellsouth.net

I know this is a very long shot, but I'm looking for Table 6-13 >from the ENIAC Technical Manual Part 1 by Adele Goldstine. In the table of tables at the front of the manual, it's listed as being "in an envelope attached to the back cover." Neither the scan on archive.org nor the printed copy from Periscope Film (which appears to be produced from the scan on archive.org) appear to have this table. Does anyone know where a scan of this table might exist? Thanks in advance, BLS

9 years, 4 months

ISO figure from ENIAC Technical Manual

by blstuart＠bellsouth.net

9 years, 4 months

Chip info reqd: MR9736-002 CRT controller?

by witchy＠binarydinosaurs.co.uk

Hi folks, The restoration of the STC Executel 3910 I mentioned the other day continues with picture help from another collector who bought one at the same time I did. I've got it powering up and the tiny monitor is trying to display something but the horizontal hold has gone so I'm suspecting dry joints given the state of the back of the monitor board and the microcassette drive next to it when I opened it up for the first time. It's been cleaned and the leaky battery removed since then, fortunately there's no trace damage from the alkali. The display board is powered by the chip in the subject line and neither myself or google has heard of it. It's a 40 pin DIP that doesn't seem to be pin compatible with any CRTC I'm aware of. Anyone? -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

9 years, 4 months

cctech Digest, Vol 28, Issue 4

by scott.l.baker＠gmail.com

*Hi Glen *>> The boards appear to be the following in the photos:>> M8186 KDF11-A 11/23 CPU>> ????? 256KB parity RAM>> ????? DSD disk interface for the DSD-440?>> ????? bus grant card?>> M8028 DLV11-F Async interface>> M8012 BDV11 Bus terminator, bootstrap and diagnostic ROMs>> M8016 KPV11 Power fail, realtime clock, (termination) ????? 256KB parity RAM >> Yes, the board was made by National Semiconductor Memory Systems but is has TI RAMs on it 9x4xTMS4164-150ns ????? DSD disk interface for the DSD-440? >> Yes :) ????? bus grant card? >> Yes :) >> In some of the photos the M8012 BDV11 is installed upside down. Make >> sure you don't power it on that way. I noticed that :P Thanks, Scott On Sun, Oct 9, 2016 at 10:00 AM, <cctech-request at classiccmp.org> wrote: > Send cctech mailing list submissions to > cctech at classiccmp.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctech > or, via email, send a message with subject or body 'help' to > cctech-request at classiccmp.org > > You can reach the person managing the list at > cctech-owner at classiccmp.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of cctech digest..." > > > Today's Topics: > > 1. PDP-11/23 system for sale in Portland Oregon (Scott Baker) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 8 Oct 2016 11:31:29 -0700 > From: Scott Baker <scott.l.baker at gmail.com> > To: cctech at classiccmp.org > Subject: PDP-11/23 system for sale in Portland Oregon > Message-ID: > <CABW5Ymky8tCrsTKL4ehEUDt4vtkDxO1hYTDAUS2ANnxxux8Ykg at mail. > gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Hi, > > Pictures can be found here: http://sierracircuitdesign. > ddns.net/temp/pdp11/ > > The system is located in Portland, Oregon. Local pick-up is preferred. > Not sure if it still works. I have not tried to turn it on in years. > I do not have any software of floppies for it. > I'm not sure what it's worth. If you are interested in it, make me an > offer. > > Regards, > Scott > > > End of cctech Digest, Vol 28, Issue 4 > ************************************* >

9 years, 4 months

Twiggys [was: Re: ka... ching!]

by vintagecomputer＠bettercomputing.net

-------- Original message -------- From: "Ian S. King" <isking at uw.edu> Date: 2016-10-09 5:08 PM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Twiggys [was: Re: ka... ching!] On Sun, Oct 9, 2016 at 3:07 PM, Brad H <vintagecomputer at bettercomputing.net> wrote: > > > -------- Original message -------- > From: "Ian S. King" <isking at uw.edu> > Date: 2016-10-09? 2:30 PM? (GMT-08:00) > To: "General Discussion: On-Topic and Off-Topic Posts" < > cctalk at classiccmp.org> > Subject: Re: Twiggys [was: Re: ka... ching!] > > On Sun, Oct 9, 2016 at 2:37 AM, Dave G4UGM <dave.g4ugm at gmail.com> wrote: > > > > -----Original Message----- > > > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brad > H > > > Sent: 09 October 2016 07:41 > > > To: General Discussion: On-Topic and Off-Topic Posts > > > <cctalk at classiccmp.org>; jwsmail at jwsss.com > > > Subject: Re: Twiggys [was: Re: ka... ching!] > > > > > > > > > > > > I'd like to learn more about programming, esp for my 6800.? It'd be fun > > to test > > > its limits and see what uses I can find for the graphics board I got. I > > just don't > > > understand how they programmed the thing. All the hex stuff throws me > > > off.? :) > > > > Does it have a serial interface and memory. In which case it was probably > > programmed in Assembler. > > When I started with 6800 board and 256 bytes of memory, and toggle > > switches to load it I used to hand assemble the programs to get the > > hex/binary. > > I soon got bored of the toggle switches and built a little box with an > old > > calculator keyboard and display and some TTL so I could enter data > quickly. > > > > > > Dave > > > > I recently acquired a SWTPC 6800, a machine I remember from when it was > new.? :-)? There are many programming environments available for it - I'm > working to get Forth running on mine, then I'll branch out. > > It's been said that the 6800 inherited a lot of ideas from the PDP-8, and I > agree with that to some extent.? The ISA is actually very clean and neat, > once you wrap your head around it - I used to program 6800 assembler > professionally, my first paid job as a programmer!? Unlike the PDP-8, I/O > is memory-mapped.? Depending on what monitor ROM you have (if any), you may > have different system services available.? One very useful system is the > one that can read S-records from the serial input, allowing you to easily > transfer programs onto the machine. > > If you want to grok the 6800 in fullness, there are online scans of > Motorola's programming manual for the device.? Another great resource is > the swtpc.com site, even if you don't have a SWTPC machine (what do you > have?). > > Have fun with it!? Cheers -- Ian > > -- > Ian S. King, MSIS, MSCS, Ph.D. Candidate > The Information School <http://ischool.uw.edu> > Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical > Narrative Through a Design Lens > > Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> > Value Sensitive Design Research Lab <http://vsdesign.org> > > University of Washington > > >There is an old Vulcan saying: "Only Nixon >could go to China." > > I've an original SWTPC 6800.? Also have an ASCI System X and a Tektronix > 6800 board bucket.? Right now I'm enjoying working with the SWTPC.? I'm > trying to deck it out as completely as one could have. > I don't quite understand assembly.. I assume to program in that, as with > BASIC you need to load an 'assembler' language first?? I tried this with my > Digital Group system with 5 different tapes marked 'assembler' but never > got them to load.? Not sure if I understand the concept. The assembler is a program that transforms (somewhat) human-readable text into machine code.? There a few ways to go about structuring this workflow.? So far I've been using a cross-assembler that runs on a different system - for example, the original UNIX was cross-assembled on a GE-635 mainframe for its PDP-7 target.? There are native assemblers as well.? These often assumed some sort of secondary store, whether punched tape, magtape or disk, that might hold intermediate stages of assembly and certainly the final product.? A common workflow was: - load native assembler program from <media> - start native assembler program - tell native assembler program where to find the source (which media) - native assembler reads in source, transforms it to object (machine code), sends the results to <media> - programmer loads object from <media> and runs it If you're loading an assembler program from tape, you probably need to give the monitor a 'go' instruction once it's completed (that's how MIKBUG works, anyway).? The assembler may prompt for the input source or may just assume that once you say 'go' a tape is loaded and ready to be read. How do you create the source?? If you're doing it natively, you need an editor that runs on the platform and can send the resulting text to <media>.? Or again, you can write your assembly source on another platform and create (or emulate) appropriate <media>. I hope that helps.? Cheers -- Ian -- Ian S. King, MSIS, MSCS, Ph.D. Candidate The Information School <http://ischool.uw.edu> Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical Narrative Through a Design Lens Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> Value Sensitive Design Research Lab <http://vsdesign.org> University of Washington >There is an old Vulcan saying: "Only Nixon >could go to China." So the Cliff Notes version of this is I need to find a copy of SWTPC's assembler? ?(Pretty sure I've seen it referenced somewhere)

9 years, 4 months

SCSI Tape Emulator

by dave.g4ugm＠gmail.com

Folks, I am "playing" with a small VAX and want to install software onto it, some of which are in SIMH ".tap" format files. I was thinking it would be nice to have a SCSI Tape emulator that worked a bit like the USB floppy emulators that are about. So it would plug into the SCSI bus and allow ".TAP" (and other tape formats) stored on some kind of flash memory, say USB or SD card perhaps, to be read by real hardware. Does this sound usefull to any one? Any other thoughts on how this could be achieved? Dave Wade G4UGM & EA7KAE

9 years, 4 months

New acquisition. Ploycorp Poly 1. New Zealand school computer

by terry＠webweavers.co.nz

Hi guys, In case anyone is interested... http://www.classic-computers.org.nz/blog/2016-10-9-poly-acquisition.htm This could have been the BBC of New Zealand schools... (-: Terry (Tez)

9 years, 4 months

Need a case that has not turned to goo for a workslate

by COURYHOUSE＠aol.com

Need a case that has not turned to goo for a WORKSLATE the case we have is NASTY!! thanks Ed# _www.smecc.org_ (http://www.smecc.org)

9 years, 4 months

Data on a Platter!

by silent700＠gmail.com

Here's a scan - and special bonus audio tracks - of a brochure and 7" record I found on ebay recently: http://chiclassiccomp.org/docs/index.php?dir=%2Fcomputing/EG%26G "Data on a Platter" from a company called EG&G (anyone heard of them?) describes their vinyl (as in analog audio record) data storage scheme and how it will fit into your business. There's no date anywhere but the brochure is a great example of 60s typefaces, not to mention language. The recording includes examples of how the data sounds if played on a regular phonograph. Who's up for decoding it? -j

9 years, 4 months

New acquisition. Ploycorp Poly 1. New Zealand school computer

by COURYHOUSE＠aol.com

Terry - - Congrats! I never knew about these systems! Thanks for sharing this history with us! Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 10/9/2016 5:13:58 P.M. US Mountain Standard Time, isking at uw.edu writes: On Oct 8, 2016 5:33 AM, "Terry Stewart" <terry at webweavers.co.nz> wrote: > > > Hi guys, > > > > In case anyone is interested... > > http://www.classic-computers.org.nz/blog/2016-10-9-poly-acquisition.htm > > > > This could have been the BBC of New Zealand schools... (-: > > > > Terry (Tez) > > >

9 years, 4 months

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