[cctalk] Re: It's been a while - retirement project

Dave, Thanks so much for the wonderful IMD utility. While I have you on the horn, can I have you look into a small bug in IMD, related to using it to make HP LIF disks. I was trying to format an HP LIF disk from IMD (77 tracks, 30 sectors, 5 interleave, 512 MFM encoding, 256 bytes per

RE: Overclocked TI Silent 703 at 1200 bauds?

On my 703 the label says switch 4 unused, and it does nothing when I try it. Marc > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Ron Pool > via cctalk > Sent: Saturday, October 30, 2021 10:06 AM > To: 'General Discussion: On-Topic and Off-Topic

RE: Overclocked TI Silent 703 at 1200 bauds?

...@dragonsweb.org] > Sent: Friday, October 29, 2021 10:01 PM > To: cctalk@classiccmp.org > Cc: CuriousMarc > Subject: Re: Overclocked TI Silent 703 at 1200 bauds? > > On Fri, 29 Oct 2021 20:35:50 -0700 > CuriousMarc via cctalk wrote: > > > I recently acquired a TI S

Overclocked TI Silent 703 at 1200 bauds?

I recently acquired a TI Silent 703 on ePay and just fired up. It worked right away. But I expected it to work at 300 bauds as advertised, and to my surprise, it clocked at a the head turning speed of 1200 bauds! Did they hot-rod it later in its product life? It says MODEL 703 at the back, part

RE: Hp 21mx loader rom set

Hi Grant, I looked at my collection and I have the 67-69 ROMs, which I also identified as the DS/1000 ROMs (Distributed Systems Network). I also have a 91740-80033/34/35 set which I don't know what it is. Does anyone know? Anyhow, looking at the ROMs and dates, I suspect these are E/F microcode

RE: HP vintage boards being sold as scrap

> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy > Dunphy via cctalk > Incidentally I've identified those boards. The ones with the pull rings: > > https://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/ZrUAAOSwI5Fdg5KH/$_57.j > pg > > They are 12/13 bit isolated DtoA, either voltage or

RE: HP98035 Real Time clock and AC5954N clock chip

> > I wondered if it's actually a digtal watch chip (2.5V could have been a couple > of mercury cells in series, LED watches were not uncommon back then). > > In which case it would not normally have come in a 0.6" wide DIP. Perhaps > normally it was a bare chip directly mounted on the watch

RE: HP98035 Real Time clock and AC5954N clock chip

gmail.com] Sent: Thursday, June 06, 2019 8:25 PM To: CuriousMarc; General Discussion: On-Topic and Off-Topic Posts Subject: Re: HP98035 Real Time clock and AC5954N clock chip On Thu, Jun 6, 2019 at 8:57 PM CuriousMarc via cctalk wrote: > > All HP fans in general and Tony in particular, > I h

RE: HP98035 Real Time clock and AC5954N clock chip

ctalk-boun...@classiccmp.org] On Behalf Of Paul Berger via cctalk Sent: Thursday, June 06, 2019 1:28 PM To: CuriousMarc via cctalk Subject: Re: HP98035 Real Time clock and AC5954N clock chip Are you able to set the date and time on your clock? I had disconnected one end of the diode in the char

HP98035 Real Time clock and AC5954N clock chip

All HP fans in general and Tony in particular, I have the exact same problem. HP98035 real time clock module (http://hpmuseum.net/display_item.php?hw=168), plugged into a HP9825T (http://hpmuseum.net/display_item.php?hw=171), accepts commands, reads back all 8's. Battery is new, is charging and at

RE: Documation card readers for sale

Thanks! Marc -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Kyle Owen via cctalk Sent: Wednesday, December 12, 2018 8:47 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Documation card readers for sale On Wed, Dec 12, 2018 at

Re: Source code listings from REDAC PDP-based PCB layout system.

I have a version of the Racal Redac CAD system for the HP 2647 or 2648 graphic terminal I believe. Several DC 100 tapes and one or two boards full of custom ROMs... No documentation. I have not tried to do anything with it yet. Marc On Oct 1, 2018, at 4:42 PM, Paul Koning via cctalk wrote:

Re: The Ultimate Apollo Guidance Computer Talk

> On Sep 18, 2018, at 8:44 PM, Steve Malikoff via cctalk > wrote: > > Haven't watched this video yet but am keen to do so as "ultimate" is a bold > claim to make. > This an outstanding presentation. The bold claim is actually somewhat justified... Marc

Re: HP 9885M Flexible Disk Drive available

Thanks! Very interested, will respond to you directly in another email. Marc On Sep 3, 2018, at 9:42 AM, Ernie via cctalk wrote: Hi Mark ! Ran across your 2016 note at ( http://www.classiccmp.org/pipermail/cctalk/2016-July/025530.html ) while looking for info on the HP9885M Disk Drive.

Re: Anyone have an HP 12661A DVS card manual, 12661-90004?

And as Glen figured out, I am very interested in this too! I didn't even know such a card existed. If they have the schematics in the manual (likely), I can recreate the card. Marc On Apr 30, 2018, at 7:40 AM, Glen Slick via cctalk wrote: I don't see a manual for the

RE: Help on a 1998 Award BIOS chip

And lifting the sticker reveals the BIOS chip is just a W29C020P-12, a regular 256k x 8 Flash memory, 5V chip. Duh. Mystery solved. Of course way newer and with many more address lines than my DataIO 29B can read and program. Time has come to buy a small, modern, cheap, infinitely capable

Help on a 1998 Award BIOS chip

After battling for days with a Dolch 65 that developed the two-tone beep-of-death on boot, I finally found that it's just my BIOS ROM that has gone bad. The BIOS happens to be an Award BIOS, says "Award 1998 PCI/PNP 686" on the chip. It's a square chip with pins on the side. Photo here:

RE: To be scrapped in as little as 2 months

And by the way, you'll be glad to know that the answer is 230 lbs for an 029. Marc -Original Message- From: CuriousMarc [mailto:curiousma...@gmail.com] Sent: Sunday, April 15, 2018 11:02 PM To: 'Alan Perry'; 'General Discussion: On-Topic and Off-Topic Posts'; 'Pete Lancashire' Subject:

RE: To be scrapped in as little as 2 months

Alan, Saw your comment on my YouTube channel about the 029 size and weight. You can reach me right here too if you want. Marc -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Alan Perry via cctalk Sent: Sunday, April 15, 2018 8:16 AM To: Pete Lancashire;

Re: Shipping a Flexowriter

Wow! Complete with the matching desk and in perfect cosmetic condition. What a find. Congratulations! Marc On Mar 21, 2018, at 10:55 AM, Kyle Owen via cctalk wrote: I ended up going with PakMail and was not disappointed. It arrived safe and sound yesterday, and though

Sperry Univac UTS-40 Terminal doc anyone?

I am the temporary caretaker of a Sperry UTS-40 "intelligent" terminal (very green screen, Z-80 based terminal from the late 70's or early 80's) which I grabbed on eBait for sending parts to Dominique Carlier over in Belgium. The CRT, power supply and character generator seem to work (gives a very

RE: Argh--my old faithful HP16C is failing!

Thanks. This is one ugly duckling. I know why I didn't keep it! But it seems to be functional. Stick to the 15C mentioned before if you don't need the programmer's features. Marc -Original Message- From: Keven Miller(3k) [mailto:kev...@3kranger.com] Sent: Sunday, December 24, 2017 9:59

RE: Wanted: HP7970 hub mech

I didn't even know there was such a thing as a twist to tighten on the HP7970. On the 7970A maybe? Marc -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis via cctalk Sent: Sunday, November 19, 2017 7:32 PM To: CCtalk Subject: Wanted: HP7970

Re: Cases (display) for beloved ISA cards?

I use shadow boxes from Michael's to display my boards. They have many kinds http://www.michaels.com/-black-shadowbox-studio-decor/M10322044.html?dwvar_M10322044_color=Black Marc On Nov 16, 2017, at 8:04 AM, Ethan via cctalk wrote: This message has no content.

Re: Playing with HP2640B

What did you do for the screen mold? Hot wire method to separate CRT from implosion window? Put the CRT in a hot water bath? Chip at the glue? Marc On Nov 15, 2017, at 11:48 AM, Mattis Lind via cctalk wrote: I have been working on a HP 2640B terminal. It was mostly

RE: HP 2640 character set generation manual in the UK

em to have a big collection of Manuals but no intention of scanning them, or making them available other than on personal request. I am in the UK but have never been. Let me e-mail and ask. Dave > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of &g

HP 2640 character set generation manual in the UK

The link below is from the computer museum in Cambridge, UK, which seems to have a copy of an HP 2640 terminal manual I am looking for. Is anyone from that museum on the list? Does any of the UK members know them? http://www.computinghistory.org.uk/det/14373/HP-2640-Series-Character-Set-Ge

Re: Several new items for sale

Hi Sellam, I'm interested in your serial Thinkjet. No rush. Marc On Oct 7, 2017, at 12:12 AM, Sellam Ismail via cctalk wrote: I have listed several new items for sale on the VCFed forums. They are: Mentor Graphics 433 Workstation

Re: More videos of VCF's Univac

Wonderful! What a beast! Nice to see the Model 35 TTY working so well too. Wumpus runs on my HP 85, but it's not quite the same experience ;-). Curiously it's one of the kids favorite vintage games. Marc On Oct 9, 2017, at 10:00 PM, Evan Koblentz via cctalk wrote:

RE: (Classic Computers) HP 7970 1/2" 9-Track Reel-to-Reel Tape Drive

Dave, Thanks, I wasn't aware of this subtlety. But this is for the 7970E only, right? Can you boot a 21MX from a 7970B tape with the standard boot ROM? Is your better boot ROM code available? Marc -Original Message- From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of J. David

RE: (Classic Computers) HP 7970 1/2" 9-Track Reel-to-Reel Tape Drive

Talking to the direct interface should be much easier interface-wise. The added difficulty is that you are now responsible for formatting. The interface is well documented (look for 5952-5441_HP_7970E_Interface_Guide_May71.pdf), at least for the E. Marc From: Jack Harper

Re: Univac

Beautiful tape unit. Threading the tape over the myriad of pulleys must be a joy! Marc On Oct 2, 2017, at 10:20 PM, Evan Koblentz via cctalk wrote: Here's a phone video from a recent repair workshop at the VCFed museum in New Jersey. Bill Dromgoole is demonstrating

Re: CHM Alto demo event Nov 10

Registered! Marc On Oct 3, 2017, at 1:30 PM, Al Kossow via cctalk wrote: fyi, just noticed this is up now http://www.computerhistory.org/events/upcoming/#yesterdays-computer-tomorrow-xerox-alto

RE: HP 2108A key

And indeed, the H2007 key from eBay works perfectly! Thanks a lot for the link. I also have two kinds of 21 MX's, one with the double sided on/off H2007 key, and one with a regular HP 1000 key and front panel arrangement. That key opens the front panel. However, the second 21MX actually says

Re: Alto 5-Key Keyset pictures

I see you have the same problem as I did encounter: a rusting shaft that binds the keys together... I agree, they really spent big $ for production level tooling (and industrial design and engineering) to make the chordset, it is quite impressive. Marc On Sep 16, 2017, at 1:58 PM, Al Kossow

Re: Rainbow Disk Imager

What Chuck says. +1 on ImageDisk. I also tried OmniDisk which allows you to do just about anything with the formats, including a lot of wrong things. I found it much more difficult to use, but it taught me quite a few things. I made 3 videos on YouTube about it, mostly to remember what I did,

RE: HP 7970B Capstan?

All my capstans are feel rather hard (I think because the rubber is pretty thin), and do not feel sticky either. The finish is matte. But they are not powdery at all, they would not leave any residue rubbing your finger on them, so something looks odd with yours. When the tape is threaded but

Xerox Alto Chordset Pictures (was RE: VCF?)

Steve, Here you go, 13 pictures of the Chordset. That's about as orthoscopic as I could get them. https://www.dropbox.com/sh/owjnyvozp0t8wsg/AABlwP-q-S1pOM4a9_RVAsXVa?dl=0 Note that even the piano keys are not flat pieces, they are wedges that thicken towards the back. Way more engineering and

RE: VCF?

The overall Chordset dimensions are 5 3/4 for width and 6" for depth. Keys are spaced like regular piano keys, whatever that is. That should help you dimension the drawing you have. We found very few programs that would use it. Marc -Original Message- From: cctalk

RE: HP 12653A line printer interface

Ah, thanks, I learned something. The HP 2767 is a weird beast - line drum printer but only 80 columns, from what I glean from hpmuseum.net. David (Collins), do you have the printer? Marc -Original Message- From: J. David Bryan [mailto:jdbr...@acm.org] Sent: Tuesday, July 11, 2017 11:12

RE: Cipher F880 with S100 interface card on local CL

$9.99 a piece? Mind boggling. Marc -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis via cctalk Sent: Tuesday, July 11, 2017 8:15 AM To: cctalk Subject: Re: Cipher F880 with S100 interface card on local CL On 07/10/2017 10:36 PM, Ethan Dicks

RE: HP 12653A line printer interface

I thought I did, but what I have is the HP 12845B Line Printer interface card, for which I could find the documentation. Unfortunately, looking at the schematics, it does not seem to be based on a 12566B interface. Reading some more, it is meant for the 2607/261x series of printers, which

Re: Wollongong HP 3000 TCP/IP

Wow, nice find. I have bought from thus guy before, but this time it's not me... Marc Sent from my iPad > On May 12, 2017, at 12:33 PM, Al Kossow via cctalk > wrote: > > > Did someone on the list outbid me on these? > > http://www.ebay.com/itm/262963986628 >

Re: Trip to CHM - Hotel/Restaurant Advice

I'd look at hotels on El Camino in Mountain View or Palo Alto, maybe near San Antonio road. There are a whole bunch of smaller hotels along there. Warning: this is California, Silicon Valley and more specifically Google land, so hotels tend to be full and rather expensive for what they are, as

Re: LGP-30 Update

Sweet! Marc > On Mar 19, 2017, at 2:39 PM, Cory Heisterkamp via cctalk > wrote: > > Hey guys, figured it was time for an update on the LGP-30 resuscitation. > > Some further detective work found a leaky 1500uF cap in one of the B+ > supplies which was causing the

Re: HP 2647A BASIC/AUTOPLOT47 and DEMO tape preservation

Dave, I am interested. I have an HP 2647 with two restored tape drives, and have been looking for this exact tape set. I have some "new" Athana tapes. Step 1 would be to copy them to a new Athana master tape. Then step to could be to make copies available to the group. Step 3 would be to

Re: I the new mail system

For what it's worth, I'm OK with it too. It correctly shows that this is a message relayed by a list sent from a person. I can easily choose whether I want to respond to the list or to the person or both, I had to make that choice before anyhow. If bounces are fixed that's great. Marc > On

Re: Full immersion emulation

Charles, Then you are the one that asked for the permission to use the sound of my "Golf Ball Madness" Selectric video (shameless plug: https://youtu.be/vOIPN70f_-Id ). A) go right ahead and B) turns out I have a high end recording studio installation at home. I can record clean high quality