FOR SALE: TRS-80 Model III w/4 half-height 5.25" drives (needs work)

I have for sale a TRS-80 Model III with 4 half-height 5.25" drives. Full details are here: http://www.vcfed.org/forum/showthread.php?59937-TRS-80-Model-III-w-4-half-height-5-25-quot-floppy-drives-needs-work Thanks! Sellam

FOR SALE: HP Omnibook 300 & 425 w/accessories

I have a HP OmniBook models 300 & 425 for sale with extra accessories as a package or separate. Full details are here: http://www.vcfed.org/forum/showthread.php?59962-HP-OmniBook-300-amp-425-w-3-5-quot-external-drive-and-more Thanks! Sellam

DEC LK401 vs. LK402?

Am I correct that the only difference between the LK401 keyboard and the LK402 is the keycaps? If so, does anyone know if LK450 (actually apparently an LK451 despite the sticker on the back) keycaps can be transplanted to an LK401? Zane

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

YES! hp 30 series 3000 systems and 40 series had hpib 1600 bpi 7970e in early days. later they had other drives that would go 6250... and I wish I had one to load the old bulleting board email chat software up on the hp 3000 37 I have here. later dried

Re: Tek 4051 semi-repaired

I will be glad to open mine up, and 'PhotoFact' it for you. I can take scope shots of the critical signals, voltage rails. I suppose the first, would be if you hit the HOME PAGE key it should clear the screen, I can follow that signal path, and take some scope shots... Even with the screen

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

On 10/03/2017 06:58 PM, Jay West via cctalk wrote: > HP manuals of the period are awfully detailed. They all have the theory of > operation section with a circuit walkthrough, etc. It could be helpful for > you to also take a look at the manual for the 13181 or 13183 controller set, > as you'll

Re: Tek 4051 ROM cart box

On 10/3/2017 9:25 AM, Ian Finder via cctalk wrote: On Tue, Oct 3, 2017 at 9:12 AM, Randy Dawson via cctalk < cctalk@classiccmp.org> wrote: I think he has a few of these left. The big problem is the RAMPACK plastic cases are recycled from old ROMPACKs and these are in short supply. He is

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

Hello Jay et. al... I appreciate the feedback. I begin to understand - so, for example an HP2100 with the 7970 tape option had a specific tape controller board that talked direct to the 7970. That certainly makes sense. I never used an HP2100 with a "real" tape drive such as the 7970 -

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 5:33 PM, Al Kossow via cctalk wrote: > I have two of the CDC drives, pn 94208-51 date codes 8749 and 8750 I just popped off one of the logic boards, and it is a slightly longer than usual board with a WD1015-JM, WD11C00-JU. WD10C20B-JH-05, AND WD2010BJM05-02

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 5:39 PM, Alan Perry via cctalk wrote: > Does CHM have the e-mail on IDE history with Bill Frank, Tony Maggio and > Ralph Perry listed in the references? [21] Tony Maggio and Ralph Perry email on CDC Wren II IDE Drive, December 15, 2009 Tom probably has it, I don't recall seeing

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 5:33 PM, Al Kossow via cctalk wrote: On 10/3/17 5:03 PM, Alan Perry via cctalk wrote: Compaq and WD also worked with CDC to use the Wren II HH drive in the Compaq Deskpro 286. I found separate reports confirming the Miniscribe HDD in the Portable II and the Wren II in a Compaq

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 5:03 PM, Alan Perry via cctalk wrote: > Compaq and WD also worked with CDC to use the Wren II HH drive in the Compaq > Deskpro 286. I found separate reports > confirming the Miniscribe HDD in the Portable II and the Wren II in a Compaq > Deskpro 386 in 1986. I have two of the CDC

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

Jack wrote > Question: I understand that most (all?) of the '7970 drives interfaced > through the HP-IB IEEE-488 bus. To which AEK replied -- wrong. full stop. -- Welcome to our nook of the net. The grizzled veterans are here, and there's quite a few HP 2100/21MX folks

Re: PCMCIA (Was: The origin of the phrases ATA and IDE [WAS:RE: formatting

On 10/3/17 4:25 PM, Fred Cisin via cctalk wrote: Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize Computer Industry Acronyms"  ("Personal Computer Memory Card Industry Association", for those who want more formality)) Maybe later ones were, but the first ones were just "card

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 3:57 PM, Fred Cisin via cctalk wrote: The earliest use I can find of the "AT Attachment" terminology is the X3T9 project proposal from late 1990 which eventually led to the formation of the X3T10 group: http://www.t10.org/ftp/x3t9.2/document.90/90-058r2.txt On Tue, 3 Oct 2017,

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

On 10/3/17 4:50 PM, Jack Harper via cctalk wrote: > Question:  I understand that most (all?) of the '7970 drives interfaced > through the HP-IB IEEE-488 bus. wrong. full stop.

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

Hello List - I just joined the list a few days ago. I am delighted to have found you. I have a couple of questions about the gorgeous HP 7970 Tape Drive - e.g., http://hpmuseum.net/images/7970A-43.jpg Question: I understand that most (all?) of the '7970 drives interfaced through the

Re: PCMCIA (Was: The origin of the phrases ATA and IDE [WAS:RE: formatting

On Tue, Oct 3, 2017 at 5:25 PM, Fred Cisin via cctalk wrote: > Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize >>> Computer Industry Acronyms" ("Personal Computer Memory Card Industry >>> Association", for those who want more formality)) >>> Maybe

PCMCIA (Was: The origin of the phrases ATA and IDE [WAS:RE: formatting

Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize Computer Industry Acronyms" ("Personal Computer Memory Card Industry Association", for those who want more formality)) Maybe later ones were, but the first ones were just "card slot" "that happened to match PCMCIA when that came

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On Tue, Oct 3, 2017 at 4:57 PM, Fred Cisin via cctalk wrote: > > Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize > Computer Industry Acronyms" ("Personal Computer Memory Card Industry > Association", for those who want more formality)) > Maybe later

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

The earliest use I can find of the "AT Attachment" terminology is the X3T9 project proposal from late 1990 which eventually led to the formation of the X3T10 group: http://www.t10.org/ftp/x3t9.2/document.90/90-058r2.txt On Tue, 3 Oct 2017, Alan Perry via cctalk wrote: As I previously posted,

Re: Wanted: Parsytec SCSI-T or BBK-S4.

Hi Andrew, thanks for your email and great to hear, that you managed to get hands on a BBK-S4! On Sun, 1 Oct 2017, Andrew Back wrote: Have you got PARIX up and running with the Power Xplorer? Yes, 1.3.something. I even ported the povray to this hardware using an older pvmpov version. Most

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 12:10 PM, Chuck Guzis via cctalk wrote: On 10/03/2017 05:37 AM, wrco...@wrcooke.net wrote: fwiw in the late 80s I was the service department at a small PC store. I remember seeing these newfangled drives in Compaq computers, but I don't remember exactly when. Perhaps 88?

Re: Tek 4051 semi-repaired

If the CRT floods one can say the CRT is good with one major thing left, phosphor burns. In a DVST (Direct View Storage Tube) the most common effect is the burn area will not store with the same potential as the rest of the tube, or if burned enough will not store at all. There are other things

CHM Alto demo event Nov 10

fyi, just noticed this is up now http://www.computerhistory.org/events/upcoming/#yesterdays-computer-tomorrow-xerox-alto

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

Tom Gardner via cctalk writes: > But again if anyone has any documents dating IDE in the 1980s I’d love > to see them Don't forget the Internet Archive's impressive collection of scanned magazines for questions like this! There are several references in 1989 in Infoworld

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM

On 10/3/17 12:09 PM, Fred Cisin via cctalk wrote: Scott Mueller mentions it in his "Upgrading And Repairing PCs" http://www.informit.com/articles/article.aspx?p=2028834 He said that "IDE" was a "marketing term", with "ATA" being the "official" name.  Which is pretty much the same as the

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM

On 10/03/2017 12:09 PM, Fred Cisin via cctalk wrote: > Also, of course, "pre-ATA IDE" can mean IDE prior to the ATA > standard release, rather than prior to the early use of "ATA" as a > name. Indeed, you can still find "XTA IDE" and "ATA IDE" mentioned in literature. That is, the generic term

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/3/17 11:40 AM, Phil Blundell via cctalk wrote: On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote: So there's clear proof that at least three companies in the UK were using the term IDE before (or at least by) 1990.  I never heard it called anything else in that

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/03/2017 11:40 AM, Phil Blundell via cctalk wrote: > On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote:  >> So there's clear proof that at least three companies in the UK were  >> using the term IDE before (or at least by) 1990.  I never heard it  >> called anything else in

Re: Tek 4051 users and replacement for the 405x QIC Tape

On Tue, 3 Oct 2017, Randy Dawson via cctalk wrote: I think he has a few of these left. The big problem is the RAMPACK plastic cases are recycled from old ROMPACKs and these are in short supply. I googled "tektronix rampack" to see what they looked like. That would be absurdly easy to 3D

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote:  > So there's clear proof that at least three companies in the UK were  > using the term IDE before (or at least by) 1990.  I never heard it  > called anything else in that timeframe. That pretty much matches my recollection also.

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 03/10/2017 01:04, Tom Gardner via cctalk wrote: Unfortunately there is no documentation to support Pete's recollection - if there is any I would like to see it. Well, actually, there is, though not for quite as early as I had those conversations. The company I was referring to was HCCS

RE: Tek 4051 semi-repaired

Also the computer itself *was* semi-working.. with the monitor board disconnected, voltages were good and I could blindly type in a simple endless loop program and get the ‘BUSY’ light to light up when I ran it. I don’t have the computer just yet and my tech guy didn’t have time to try

RE: Tek 4051 semi-repaired

Yes before the screen would stay dark until you powered off, then there would be a brief flood. Now it floods and stays on but no text. From: Ian Finder [mailto:ian.fin...@gmail.com] Sent: Tuesday, October 3, 2017 9:39 AM To: Brad H ; General Discussion:

Re: Tek 4051 semi-repaired

Does it warm up or flood? "When I got my 4051, on power up there would be no voltage to the motherboard and nothing came up on the screen. That has been fixed, however we still do not have any kind of prompt or anything appearing." Care to share with the class what you've done so far? On Tue,

Tek 4051 semi-repaired

Hi there, My go-to guy for CRT stuff has informed me that he has the CRT on my 4051 working and that the tube is good. When I got my 4051, on power up there would be no voltage to the motherboard and nothing came up on the screen. That has been fixed, however we still do not have any kind of

Re: Tek 4051 users and replacement for the 405x QIC Tape

On Tue, Oct 3, 2017 at 9:12 AM, Randy Dawson via cctalk < cctalk@classiccmp.org> wrote: > > I think he has a few of these left. The big problem is the RAMPACK > plastic cases are recycled from old ROMPACKs and these are in short supply. > > > He is looking for a 'Toaster' too. Can we get a

Tek 4051 users and replacement for the 405x QIC Tape

One of the Ex-Tek's, Micheal Cranford has designed a modern FLASH based RAMPACK for the tape drive, and filled it with most of the known BASIC games. More significant, Micheal has written FASTGRAPHICS, a replacement for the BASIC vector draw functions; 100x increase in performance, in

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/03/2017 05:37 AM, wrco...@wrcooke.net wrote: > fwiw in the late 80s I was the service department at a small PC > store. I remember seeing these newfangled drives in Compaq > computers, but I don't remember exactly when. Perhaps 88? Wikipedia > backs me up that it was Compaq (with WD

Re: Tektronix 4050E01

Hi Bob, I have a 4051, in perfect working order. I would like to buy one of these 'Toasters' from you. I could also take your schematic and make more copies of it for others. What ROMPACKS do you have? Randy From: cctalk

Re: That Tek 405x QIC Tape.

On 10/3/17 8:29 AM, Mike Stein via cctalk wrote: > Sounds like a similar system to what Burroughs used on their cassettes; I > always thought that they'd be a lot easier to read than the 'normal' formats > with embedded clock signals and always intended to try to read some of the > tapes I

Re: That Tek 405x QIC Tape.

- Original Message - From: "Al Kossow via cctalk" To: Sent: Tuesday, October 03, 2017 11:06 AM Subject: Re: That Tek 405x QIC Tape. > > > On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote: > >> Al is maintaining a set of ROM images for

Re: That Tek 405x QIC Tape.

On 03.10.2017 16:59, Al Kossow via cctalk wrote: On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote: That "famous" QIC tape unit Tektronix 405x tapes aren't QIC They are 3M DC series cartridges, but the encoding is not a QIC standard. The problems, alas, are the same.

Re: That Tek 405x QIC Tape.

On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote: > Al is maintaining a set of ROM images for these machines, are tape images > covered somewhere  ? > Do we have an fixed tape image format, as has been done with Dave's IMD for > floppies ? As far as I know, no one has successfully made a

Re: That Tek 405x QIC Tape.

On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote: > That "famous" QIC tape unit Tektronix 405x tapes aren't QIC They are 3M DC series cartridges, but the encoding is not a QIC standard.

Looking for anyone who may have Commodore 65 info

Hi folks, I realise this is a question that's only applicable to a small number of people but I'm looking for anyone who may have info or better still PAL dumps of a Rev3 C65. Back when I got the machine in 2001 there was a couple of people active in this field, namely Riccardo Rubini and Moise

That Tek 405x QIC Tape.

That "famous" QIC tape unit ...has been talked about a lot, still some things are still not clear to me. Baking : is this a last-resort means of reading some valuable tape, or a means to restore them for a further few years of usage ? I intend to bake mine before usage, although a few

Re: OmniUSB - further boards to make

Yes, please... I am also reistered my interest... Marco Am 03.10.2017 um 09:17 schrieb Ed via cctalk: please send into to us as well... thanks ed# In a message dated 10/3/2017 12:12:53 A.M. US Mountain Standard Time, cctalk@classiccmp.org writes: On 10/1/2017 4:17 PM, SYLVIA

Univac

Here's a phone video from a recent repair workshop at the VCFed museum in New Jersey. Bill Dromgoole is demonstrating progress on one of the tape drives for our Sperry-Rand Univac 1219B mainframe (circa mid-1960s). https://www.instagram.com/p/BZxg7e7DJ3r/ Evan

Re: OmniUSB - further boards to make

please send into to us as well... thanks ed# In a message dated 10/3/2017 12:12:53 A.M. US Mountain Standard Time, cctalk@classiccmp.org writes: On 10/1/2017 4:17 PM, SYLVIA MCMAHON via cctalk wrote: > Hello Philip, > I registered interest in purchasing a Omnibus USB interface some

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

On 10/02/2017 10:47 PM, Tom Gardner via cctalk wrote: > Nice find but still later than Mar 1989. You must have missed my second post--January 31, 1989. --Chuck

Re: OmniUSB - further boards to make

On 10/1/2017 4:17 PM, SYLVIA MCMAHON via cctalk wrote: Hello Philip, I registered interest in purchasing a Omnibus USB interface some time ago. Is this project still alive? Regards, Baz Sent from my iPad I forwarded Philipps information to this person offline. thanks Jim