- test-drb@ccmp.vtda.org - classiccmp.org

[GreenKeys] Teletype Machine Availability (fwd)

by jpl15＠panix.com

List FYI: correspond w/George directly concerning this wonderful haul of TTY gear... ---------- Forwarded message ---------- Date: Fri, 21 Feb 2003 21:40:20 -0800 From: George B. Hutchison <w7ksj(a)attbi.com> To: greenkeys(a)mailman.qth.net Subject: [GreenKeys] Teletype Machine Availability GreenKeyers - - - This evening I received a telephone call from a gentleman advising me of the availability of the following teletype equipment. It is free for the taking. It is located in the Seattle area. He does not want the people at "The Source" to be rattled by a bunch of telephone calls, so please e-mail me should you have an interest. The list includes: 1 Ea Model 37 KSR 8 Ea Model 28 KSR 1 Ea Model 35 ASR 5 Ea Model 35 KSR 6 Ea Model 14 TD 1 Ea Model 14 RO Reperf 7 Ea Model 15 KSR 1 Ea Model 15 Perforator-Transmitter (Model 19 KBD) 1 Ea Model 43 RO 1 Ea Model 43 KSR Fair quantity multi-copy paper. The equipment must be removed fairly soon, as the space it is in has been designated by the building owner for another purpose. If it is not wanted by anyone, to the landfill it goes. I have no room for it. 73, George, W7KSJ _______________________________________________ GreenKeys mailing list GreenKeys(a)mailman.qth.net http://mailman.qth.net/mailman/listinfo/greenkeys

23 years, 2 months

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Anyone have a 5 1/4" drive for a TRS-80 available?

by lsprung＠optonline.net

HI: I am looking for a 5 1/4" floppy drive for a TRS-80. The cable would be great too! Please let me know the cost. Thank you. Sorry about my posting yesterday asking for a 1 1/4" drive. It was a typo. [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat]

23 years, 2 months

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c64 parts

by basicwayne＠comcast.net

i'm looking for commodore c64 pla chips 9061140-1 & sid chips 6581. wayne

23 years, 2 months

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Wanted: DG Nova 800/2/3 system/s & peripherals

by Innfogra＠aol.com

In a message dated 2/21/03 4:48:39 PM Pacific Standard Time, tim.challenor(a)tcns.co.uk writes: > So - can anyone point me in the > direction of any complete (pref. working) DG Nova systems with Dasher > terminals, LP/TP2 printer, gemini disks, 9 track tape, and paper tape > reader/punch kit? Any-and-all offers considered! I am in London, UK > I wish you luck. I know where most of this is in Portland, Oregon, USA. We have Finlay, a DG collector/scrapper here with some of the older stuff. It is a long way from London though and Finlay has an unrealistic, IMHO, idea of value. I could arrange shipping.....and put you in contact if you are interested. I think Lufthansa is flying PDX to Frankfurt, Germany. I should investigate air freight. Paxton Astoria, Oregon USA

23 years, 2 months

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Century Data Systems (tape drive?) exerciser

by rigdonj＠cfl.rr.com

I picked up some of a exerciser box made by Century Data Systems of Anaheim, Ca. It's marked T2000B Exerciser. I THINK it might for the old Marksman T-series DC-300 tape drives. Is anyone here familar with this box or with the T-series tape drives? FWIW CDS was an early manufacturer of hard drives (1960s) and was later bought out by Calcomp. Joe

23 years, 2 months

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TI-99/A

by kittstr＠access-4-free.com

Hi, First off I want to thank all who contributed on using VHS tapes as storage, I really appreciate your input. Now my problem is with my TI-99\A home computer. I have noticed that the keyboard is dying. I have been having to hit the keys harder and harder and now some don't work at all. I took it apart and the keyboard seems to be one unit (not disassemble-able). The keycaps don't seem to want to come off either. I was hoping to take the keys apart and clean the contacts but I don't want to break them, if they aren't so posed to come off. Does anyone have any experience cleaning these keyboards? If they are a "toss and replace" component, does anyone know where I could get one? Thanks for any help you can provide. Andrew Strouse ( kittstr(a)access-4-free.com )

23 years, 2 months

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Trivia Question

by vp＠mcs.drexel.edu

ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: > > With my contemplation of purchasing a new Sony Picturebook, I was wondering: > > [...] > What about the HP65? [...] Well I don't have an HP65, I only have an HP67 which still works. On the other hand my brand new Sony Picturebook died on me after only a couple of weeks. (while the machine was on battery power something sorted inside, the machine died, and I smelled burnt insulation). Great progress! **vp

23 years, 2 months

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TELEX machine, modems

by gil＠vauxelectronics.com

Hi George: Most Model 32 machines seem to be Telex units; they have a rotary dialer and four buttons at the front -- but the dialer is not for telephone numbers (as it is on model 33 TWX machines which can have either a rotary-dialer or touch-tone-dialer). Telex machines do not communicate with modem frequencies, but use a speciallized DC signalling scheme, described below. However, you can drive the unit with a standard current loop interface. I can put you in touch with someone who has done this, if you'd like. If you do not have a dialer, but instead have a blank panel on the right side (CCU), you have a "private-wire" machine, which is for a simple 20- or 60-mA current loop. The M32 and M33 are based on the same crappy design, which was targeted for low-use/low-cost applications, (as opposed to almost every other teletype model, with bullet-proof parts for 24/7 operation). But I digress. M32: 5-bit baudot (1-start/2-stop?), 50-baud, ~ $0 to $50 M33: 8-bit ascii (1-start/2-stop/even-parity), 110-baud, ~ $100 to $1200 According to my manual the telex CCU is for what they called "Circuit-Switching-Service," and the buttons are labelled: START, DIAL, LOCAL, and CONN(STOP), or possibly labelled: REQUEST, CONN, LCL, and DISCONN. As I understand it, Telex is a dialup service that uses DC signaling (no modem) and is 50-baud baudot. Telex was a service Western Union brought to the US starting in 1958, after it had been used in Europe for a long time -- the 50-baud was a European standard. I belive that Telex machines had some sort of line-interface box (not a modem like an M33 twx) in the stand. Here's part of the manual description of the four-button "Circuit-Switching" (Telex) CCU: "The dialer is a conventional telephone type...contacts open and close to send dialing pulses...in the idle condition, there is a positive current of 0.005 ampere in the telegraph loop. When the calling station operator depresses the START button, it causes the shunting of a major portion of the loop resistance, and the loop current increases to 0.060 ampere. The START button must be held while switching apparatus in the telegraph exchange is made available. When the circuit is ready, the telegraph exchange interrupts the 0.060 ampere loop current for about 0.025 second. This "proceed-to-dial" signal causes the DIAL lamp to illuminate at the calling station, and it locks the shunt to the loop resistance so that the operator may release the START button and proceed to dial the number of the called station...When dialing is complete, the exchange furnishes the connection and signifies this by reversing the telegraph loop current from positive to negative, which causes the typing unit motor to start and the CONN light to illuminate. Message transmission can now be exchanged between the connected teletypewriters. The line signals are 0.060 ampere marking and zero current spacing." gil >From: "George R. Gonzalez" <grg2(a)attbi.com> > >Hi, I have just bought a nice clean TELEX machine, it's a TTY-32, 5-level >coding, >with what looks like a phone line hookup, dial-type phone. > >I wonder if anybody knows what the modem standard is for this, and/or any >phone number I could call to test this thingy out! > >Thanks, > >George ;----------------------------------------------------------- ; vaux electronics, inc. 480-354-5556 ; http://www.vauxelectronics.com (fax: 480-354-5558) ;-----------------------------------------------------------

23 years, 2 months

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FYI: 25th Anniversary of Ward Christensen's BBS

by grg2＠attbi.com

Er, I don't think the modem was invented in late 50's. Modems have been used to send data over phone lines (and over radio) since at least 1940. They may have been called "Terminal units", but they did the basic modem things of mod/demodulating data onto an audio carrier.

23 years, 2 months

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cctech digest, Vol 1 #379 - 30 msgs

by fm.arnold＠gmx.net

cctech-request(a)classiccmp.org schrieb am 20.02.2003: >----------<snip>----------- >Message: 13 >Date: Wed, 19 Feb 2003 12:50:39 -0800 (PST) >Subject: Re: FYI: 25th Anniversary of Ward Christensen's BBS >From: "Eric Smith" <eric(a)brouhaha.com> >To: <cctalk(a)classiccmp.org> >Reply-To: cctech(a)classiccmp.org > >Stan Sieler asks: >> but...does anyone know the first data of a binary (not ASCII) >> file transmission via modem? > >I assume that was a typo, and you want the date, not the data? > >> (I know of some done in 1975, from an IBM >> mainframe to a DG Nova.) > >At least as early as 1965 IBM sold equipment that could do this, so >I rather imagine people probably did binary transfers even in those days, >but I don't have any proof of it. >----------<snip>----------- Hi, I found this: http://www.smecc.org/sage_a_n_fsq-7.htm at photo 22 it claims: 22. Simplex.jpg. This console provided operation and maintenance of the Long Range Inputs and Outputs. Simplex because there was no redundant hardware. Each radar station fed digitized data to the DC over public telephone lines (a first - they had to invent the modem!). The DC also sent data to the neighboring DCs and to the Command Center (the AN-FSQ-8 computer).

23 years, 2 months

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Floppy drive for Zenith 100

by acme＠ao.net

From: Vintage Computer Festival <vcf(a)siconic.com> Date: 02/20/2003 7:58 PM > On Thu, 20 Feb 2003 acme(a)ao.net wrote: > > > > OR you can get a copy of MS-DOS 4.00 and patch it to run on the Z-100. > > > > Jeez, Joe, now I'm really gagging. MS-DOS on a Z-100? Yuck. > > The Z-100 was intended as a dual OS machine. You had the best > (presumably) of both worlds: CP/M and MS-DOS. Sure -- that's how I set mine up, but to me, running MS-DOS on it makes it too much like a run-of-the-mill PC, whereas running CP/M-86 gives it more of a "vintage" flavor. Make sense? (I'm not feeling very articulate today) Later -- Glen 0/0

23 years, 2 months

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Hewlett Packard "68040 Demo Board"?

by rigdonj＠cfl.rr.com

Anybody know what this is for? It's about 4 x 6" and has a 3 pin power connector, a 2 pin connector for a reset signal and ONE 7 segment display. There is no other connectors or I/O. It has the part number 64783-66502 on it but I can't find anything from HP with a 65783 model number. Joe

23 years, 2 months

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Trivia Question

by melamy＠earthlink.net

you have opened up a can of worms now...or maybe I have because of my comment... what is your definition of a computer? My first thought was the HP65 that was programmable and that was 1974. Early computers didn't have to have a language like BASIC. They just needed to be able to run a program that a user could put in. Best regards, Steve Thatcher >--- Original Message --- >From: Roger Merchberger <zmerch(a)30below.com> >To: cctalk(a)classiccmp.org >Date: 2/20/03 9:08:43 PM > With my contemplation of purchasing a new Sony Picturebook, I was wondering: > >What was the first portable computer that weighed less than 1Kg? >[[I'm assuming that it'd be older than 10 years, so it should be ontopic...]] >Any pointers appreciated! :-) > >Thanks, >Roger "Merch" Merchberger

23 years, 2 months

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Subject: Re:large disk platters?

by mmcfadden＠cmh.edu

I think there were larger platters. On Thu, 20 Feb 2003, Murray McCullough wrote: > Hi Jules, > To my knowledge the largest hard drive platter was 24". IBM the inventor may have produced > an experimental platter of ~1 m as a demonstration project to management and maybe these platters > were 'sold' or distributed to IBM employees? In about 1976 University of Missouri Bioengineering Program acquired an "IBM surplus image system" from somebody "unknown" out west. They sent a couple of graduate students to pick up the system in a U-Haul truck which was very overloaded. When we rolled the PSU down the hall on castors it left grooves in the floor tile because of the weight. There were 3 cabinet units each 6 feet high and 5 feet wide. One was the power supply, one was the disk controller and the other was the disk. It had a "very large" disk platter that ran vertically, if I remember correctly they were about 3-4 feet in diameter. Interesting noise when they spun up, kind of like turbine engine. There were two clamshell halves that were opened to access the platter, each track had a fixed head over it. Stored on each track was the image on a single display station. By switching between tracks you could access different images. There was a vacuum pump to remove the air if you opened the clamshells to adjust the heads. Each of the display stations had an integrated keyboard and a proximity or optical pen to select menu items. We wanted to investigate distributing medical images rapidly throughout a hospital. It was a one of the kind and after a few head crashes that was the end. We then bought a Ramtek display of 256 X 256 by 8 bits instead for $50K. It sat in a real compuer room with: an Interdata 8/32 a PDP 11/50 running MUMPS with 2 RK05's a PDP 11/20 running DOS-11 with 3 RK05's and a TU10. The SEL, PDP 8 with ASR-33, IBM 026 and IBM 029 were next door. Back in the punch card days of old. Mike

23 years, 2 months

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HELP! MFD Checker II

by rigdonj＠cfl.rr.com

I just bought this <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25399&item=2507112537> off of E-bay. Obviously it's some kind of disk drive tester. I opened it up and the entire front panel is hand wired but I also found a commercail circuit board in it. On the board it says "MFD Checker II" "Sony" "Made in Japan". Does anyone know anything about a MFD checker? It looks as though the circuit board was once the major part of another machine and that they took the switches, displays and indicator lights off of it and rerouted them to the front panel. However there are a few things that they didn't put on the front panel; a 80 vs 70 track select (yeah 70 track), a drive select, a 300 vs 600 RPM select and a good number of test points such as the write gate. However on the front panel you can now select 2MHz, 1 MHz, 500kHz, 250kHz, 125kHz or 67.5kHz. Anybody know what that's about? I'm guessing that it controls the bit frequency that's written to the disk and that it's used to test the disk coercivity. On the original board you could only select 1F or 2F. I should add that a 2nd baord as also been added into the case. It's a handwrapped vector board with 20 SSI ICs. I'm sure that it's used to generate and select the extra frequencies and other as yet unknown functions. Anybody care to speculate? Joe

23 years, 2 months

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Using non-sun mice on a sparc?

by drido＠optushome.com.au

I'm trying to get Sparcstation 1 up and running with Redhat Linux, but I don't have any sun mice. I noticed as the install CD boots it looks for a mouse-systems mouse. I have some other workstation mice around here somewhere, and I think at least some of them were marked mouse-systems. Has anyone managed adapt any other mice for use on a Sparc? I know there are some commercial sun to ps/2 adapter, but $75 is a bit much to spend on an adapter for a $5 computer. I though about using a serial mouse, but porting the PC driver to Sparc is way beyond my current skill level. I could always just buy a sun mouse, but the shipping/currency conversion charges are likely to be more than the cost of the mouse itself. Any ideas appreciated...

23 years, 2 months

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Hewlett Packard "68040 Demo Board"?

by glenslick＠hotmail.com

Maybe it was a demo / tutorial tool for use with an HP 64700 set up for emulating a 68040? > Anybody know what this is for? It's about 4 x 6" and has a 3 pin power >connector, a 2 pin connector for a reset signal and ONE 7 segment display. >There is no other connectors or I/O. It has the part number 64783-66502 on >it but I can't find anything from HP with a 65783 model number. > > Joe _________________________________________________________________ Tired of spam? Get advanced junk mail protection with MSN 8. http://join.msn.com/?page=features/junkmail

23 years, 2 months

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STOP! (RE: Let the witch trials begin! Re: OT: Re: Going OT Re: (no subject))

by Fred.van.Kempen＠microwalt.nl

Guys. Stop. Topic. Nuf said. > -----Original Message----- > From: Mail List [mailto:mail.list@analog-and-digital-solutions.com] > Sent: Friday, February 21, 2003 6:23 PM > To: cctalk(a)classiccmp.org > Subject: Re: Let the witch trials begin! Re: OT: Re: Going OT Re: (no > subject) > > > Hello Sellam, > > > "should probably"? It's embedded in the Constitution!!! > > Yes, but remember, the Constitution can be changed, if the people > of the United States decided to change it. Hopefully that article will > remain as it is. > > > Best Regards > > > > > > At 08:06 AM 2/21/03 -0800, you wrote: > >On Fri, 21 Feb 2003, Mail List wrote: > > > > > That's why separation of church and state is probably a > very good idea. > > > The people in this country have come here from every region of the > > > world, and have brought their religious beliefs with > them. Religion > > > should probably remain a personal matter, and not be made > part of the > > ^^^^^^^^^^^^^^^ > > > government's areas of concern, other than to protect the > peoples rights > > > to practice what form of religion they choose. > > > >"should probably"? It's embedded in the Constitution!!! > > > >-- > > > >Sellam Ismail Vintage > Computer Festival > >------------------------------------------------------------- > ----------------- > >International Man of Intrigue and Danger > http://www.vintage.org > > > > * Old computing resources for business and academia at > > www.VintageTech.com *

23 years, 2 months

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Looking for a TRS-80 1 1/4" drive

by lsprung＠optonline.net

Folks: I am looking for a TRS-80 5.25" drive and cable. Anyone have one available for purchase? Thank you. [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat]

23 years, 2 months

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Let the witch trials begin!

by dan＠ekoan.com

Although we're veering off-topic pretty far, I'll add two items: At 09:53 AM 2/21/03 -0500, you wrote: >The mistake probably should have been caught first by whoever >prepared the background material, then by those that prepared >that into the display overlay, then by those who were doing the >mixing, and then by someone else who actually might monitor >the final output results. > >Did anyone, other than myself, see that? Yes. You can see a snapshot of the ridiculous graphic at http://www.decodesystems.com/cnn-columbia.jpg CNN used to have the motto "Live From Everywhere." After the Oklahoma City bombing that changed. I'll leave it to the reader to decide why. Cheers, Dan

23 years, 2 months

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Gone fishin' (re: MicroVAX 3800 Power Cable)

by Fred.van.Kempen＠microwalt.nl

John wrote: > one, I can sell individual cords for this price no problem. Damn! You should have ordered 250 or so! :) > Fate: Having said this, someone on the list will now > admit that they have a bunch for _$5.00_... <g>. Well, probably some even had some for free (I got three with one of the VAXen) but hey.. $6 is a decent price. Especially if you *need* one to get the VAX powered :) I guess I'll have to do some shopping here, too, 'cos I need about 14 of them.. --f

23 years, 2 months

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First Modems (was RE: cctech digest, Vol 1 #379 - 30 msgs was Re: FYI: 25th)

by Robert_Feldman＠jdedwards.com

(Did a little Googling yesterday) Bob Scarborough (http://www.pipechat.org/archives/2001/April/digest1990.html) says <quote> In the 1930s, the acronym "modem" came into use, a contraction of "modulator/demodulator". This was used in FDM multiplexing, to denote an analog/analog function, where voiceband signals were modulated up into "channel group" spectra of 12 to 110 KHz along with 11 others by using carrier tones and selected sideband energy. </quote> The timeline http://www.greatachievements.org/greatachievements/ga_9_3p.html at has <quote> 1955 Modem first described by Ken Krechmer, A. W. Morten, and H. E. Vaughn. 1958 AT&T introduces datasets (modems) for direct connection. </quote> Bob -----Original Message----- From: Frank Arnold [mailto:fm.arnold@gmx.net] Sent: Friday, February 21, 2003 6:23 AM To: cctech(a)classiccmp.org Subject: Re: cctech digest, Vol 1 #379 - 30 msgs cctech-request(a)classiccmp.org schrieb am 20.02.2003: >----------<snip>----------- >Message: 13 >Date: Wed, 19 Feb 2003 12:50:39 -0800 (PST) >Subject: Re: FYI: 25th Anniversary of Ward Christensen's BBS >From: "Eric Smith" <eric(a)brouhaha.com> >To: <cctalk(a)classiccmp.org> >Reply-To: cctech(a)classiccmp.org > >Stan Sieler asks: >> but...does anyone know the first data of a binary (not ASCII) >> file transmission via modem? > >I assume that was a typo, and you want the date, not the data? > >> (I know of some done in 1975, from an IBM >> mainframe to a DG Nova.) > >At least as early as 1965 IBM sold equipment that could do this, so >I rather imagine people probably did binary transfers even in those days, >but I don't have any proof of it. >----------<snip>----------- Hi, I found this: http://www.smecc.org/sage_a_n_fsq-7.htm at photo 22 it claims: 22. Simplex.jpg. This console provided operation and maintenance of the Long Range Inputs and Outputs. Simplex because there was no redundant hardware. Each radar station fed digitized data to the DC over public telephone lines (a first - they had to invent the modem!). The DC also sent data to the neighboring DCs and to the Command Center (the AN-FSQ-8 computer).

23 years, 2 months

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docs for HP 98630 Breadboard?

by rigdonj＠cfl.rr.com

Does anyone have the docs for the HP 98630 Breadboard Interface card? This is a DIO size card that fits the HP 9000 series 200 and 300 computers. It has a large bread boarding area on it and some SSI ICs for interfacing to the host computer. I need to find out the pin out of the interface and any addresses, interrupts, etc that it uses. Joe

23 years, 2 months

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TELEX machine, modems

by GOOI＠oce.nl

Hi George. Most likely this is a 45.45 Baud tty, often used by HAM radio amateurs. Nowadays most amateurs have turned to PC solutions for RTTY reception. We call that teletype a "carrot crusher" over here in Holland. The 5-bit code is called Baudot, and allows for uppercase characters, numbers and some punctuation. When you say "wait a minute, how is that possible with 32 combinations?" Simple, 2 characters are reserved to shift the whole mechanism from "LETTER" to "DIGIT", so depending on the previous reception of such a special character the characters that follow are readable or garbage. Radio amateurs include something called UOS (Unshift on Space). When the "LETTER" character is not properly received, the first space char makes everything "normal" again. So, to connect a 5-bit teletype to (any) computer you need a conversion program to convert ASCII to Baudot, and at the correct transmission speed. 73 - Henk, PE1CKF Ham Radio amateur and PDP-11 addict. > -----Original Message----- > From: George R. Gonzalez [mailto:grg2@attbi.com] > Sent: vrijdag 21 februari 2003 14:31 > To: cctalk(a)classiccmp.org > Subject: TELEX machine, modems > > > Hi, I have just bought a nice clean TELEX machine, it's a > TTY-32, 5-level coding, > with what looks like a phone line hookup, dial-type phone. > > I wonder if anybody knows what the modem standard is for > this, and/or any > phone number I could call to test this thingy out! > > Thanks, > > George

23 years, 2 months

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DEC rodents

by Fred.van.Kempen＠microwalt.nl

Hi all, Is any of you (preferrably within driving distance of Holland ;-) plagued with some DEC rodents they'd be willing to, uhh, exterminate in a nice and painless [for the rodents] way? Got some DECstations and VAXstations I'd like to play with in graphics mode... Also: does anyone have a spare VS2000 "console kit" ? Cheers, Fred

23 years, 2 months

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PDP11 - RQDX1 standalone format utility?

by Fred.van.Kempen＠microwalt.nl

Christos, > I would like to do a bad sector scan on a RD52 connected to a RQDX1 > controller (The machine is a pdp11/73 without OS) prior to installing > BSD2.11.Is there a standalone program like zrqch0(standalone > version of zrqc from the xxdp package - only for RQDX3) that can be > downloaded directly to the pdp via vtserver and recognizes the RQDX1, > i.e. a version of zrqb or something similar? In "XXDP V2.5 Notes" (http://www.chd.dyndns.org/pdp11/xxdp25.notes.txt) I read the following: ZRQA RQDX or RUX50 RD/RX EXERCISER ZRQB RD51/52 DISK FORMATTER RQDX1 DISK DRIVE SUBSYSTEM ZRQC Formattable Winchester (RDnn) or Floppy (RX33) Drives RQDX3 Disk Formatter Utility ZRQD RQDX or RUX50 RD/RX EXERCISER ZRQE RQDX3 EXERCISER ZRQF RQDX3 RX33 Format Utility ZRQG RQDXn RD/RX Disk Summary Diagnostic Now, although my knowledge of XXDP is minimal, the above would make me believe that ZQRB works with the RQDX1 (only), and that the ZQRC is the one that only works on the RQDX3. Anyone know more about this? --f

23 years, 2 months

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Monitor Cable for TI-Explorer

by asholz＠topinform.com

Hello all, I'm looking for a monitor-cable (optical) and a mouse for the ti-explorer. Andreas

23 years, 2 months

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recommendations on Sbus DAS FDDI?

by rschaefe＠gcfn.org

Any one to avoid? It'll end up in an Axil SS2 clone routing a broadband connection into the FDDI backbone, unless someone can convince me that it's a horrible idea. Thanks! Bob

23 years, 2 months

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large disk platters?

by julesrichardsonuk＠yahoo.co.uk

>> To my knowledge the largest hard drive platter was 24". > > Platters of at least 36" diameter have been made; they were used > on ILLIAC IV. hmm, that's sounds about the right size. I remember the lecturer standing behind the platter and it came up to around waist height, which is where I got the 1m estimate from. thanks to all for the thoughts! Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 2 months

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Need Help: NEC PowerMate Portable SX

by rigdonj＠cfl.rr.com

I picked up one of these today and it had multiple problems but I finally got it to boot but so far I can't get a display on the built in screen. I'm not sure but I'm wondering if the switch settings on it are correct. Does anyone have the switch settings for one of these? Joe

23 years, 2 months

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HELP! MFD Checker II

by fmc＠reanimators.org

Joe <rigdonj(a)cfl.rr.com> wrote: > I just bought this > <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25399&item=2507112537> > off of E-bay. Obviously it's some kind of disk drive tester. I > opened it up and the entire front panel is hand wired but I also > found a commercail circuit board in it. On the board it says "MFD > Checker II" "Sony" "Made in Japan". Does anyone know anything about > a MFD checker? Um, I'm thinking Sony diskette drive part numbers start(ed?) with MFD. Yep, it looks to me like you got yourself a drive tester. That wouldn't get me so excited as to forget to hit return once in a while, but I guess it means you have a new way to play with the stiffy drives in all that HP gear. Congratulations! -Frank McConnell

23 years, 2 months

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DosPlus for the Model IV

by msspc＠rev.net

Hey guys! You may want to check out the Computer News 80 website at www.cnpublishing.com for information on software for the TRS80, as well as TRS80 Model 4s for sale etc. -- Frank On Feb 20, 10:45am, Al Hartman wrote: > Subject: Re: DosPlus for the Model IV > > Does anyone have a copy of DOS-Plus for the TRS > > model 4 that they can send me? I picked up a 4 last > > weekend with no SW or docs and I already have > > DOS-Plus SW and manuals for the model 1. > > > > Joe > > Joe, > > I don't have DosPlus for the Model IV that I know of > (I might, somewhere..). But, I can recommend highly > Multidos for the Model IV. > > I don't have the link handy, but if you search for it, > you can find it. > > It's still availble for purchase in the $30.00 range > last time I checked, and it is an Alternate OS for the > TRS-80 that incorporates a lot of the strong points of > DosPlus, including 80 Column support while in non CP/M > mode. > > It's a nice OS, and the DISK BASIC is faster and > smaller and more feature rich than most of the other > ones available for the TRS-80. > > I remember porting my Copy of Connection-80 over to it > (we renamed our custom version, Nybbles-80), and it > was MUCH faster under Multidos than under Newdos/80, > TRS-DOS or DosPlus, and I was able to take advantage > of several MultiBASIC features to make it nicer... > > Boy, those were the days. > > I'm on the lookout for an LNW-80 Computer that works > to set up a system again. I'm going to keep watch in > April at the Trenton Computer Festival for a Model IV > or Model III in the Flea Market. > > Regards, > Al > >-- End of excerpt from Al Hartman -- ==== M O N T V A L E S O F T W A R E S E R V I C E S P. C. ==== Clayton Frank Helvey President Montvale Software Services, P. C. P.O. Box 840 Blue Ridge, VA 24064-0840 United States of America Phone 540.947.5364 ===================================================================

23 years, 2 months

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HELP! MFD Checker II

by Innfogra＠aol.com

In a message dated 2/20/03 8:35:48 PM Pacific Standard Time, rigdonj(a)cfl.rr.com writes: > > > Do you have a Sony checker? If so, what's this about *70* track drives? > I already have a nice Brikon 723 drive tester made by Brian. I'm not sure > if it handles the 600 RPM drives but it does handles 3", 3.5", 5 1/4" and > 8" drives! > You are very lucky to get a Sony tester. IIRC the early Sony drives were very nonstandard and there were several different kinds. I am sure the 70 track goes back to the very earliest Sony floppies there are others on the list that can address this better than I. I can't remember who made the Hard drive tester that I have. I got several >from Intel when they were getting rid of the 310 stuff. It covered most of the early MFM hard drives and was built in a small blue box about 12" square. A standalone process selected from a menu of drives, plug in the drive, after a while a report was printed out. The name started with an A and was three letters. IIRC. It is close to the surface in the storage locker so I will note when I get there. You got a nice find. Hang on to it. Paxton Astoria, OR

23 years, 2 months

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Atari 400 Power Supply

by gehrich＠tampabay.rr.com

I need a power supply for an Atari 400 computer and have the following to choose from. Does anyone know which if any to use with the 400: Atari Power Supply Model CO 14319 IP 120vac 60hz 18.5w OP 9vac 15.3va Atari Power Supply Part Number C010472 IP 120v 60hz 9w OP 9v dc 500ma Atari Power Supply part number C016804 IP 120v 60hz OP 9vac 31VA Atari Power Supply part number C017945 IP 120v 60hz 50w OP 9vac 31VA Atari Power Supply part number CA14748 IP 120v 60hz 20w OP 15VA Atari Power Supply part number C016353 IP 120v 60hz 11w OP 9v DC 500ma for Atari 2600 Atari Plug In Power Supply - Part Number C061515 IP 120vac 60hz 7.5va OP 9vac 500ma Atari Power Supply part number C018187 IP 120vac 60hz 38va OP9.3vdc at 1.95A

23 years, 2 months

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HELP! MFD Checker II

by Innfogra＠aol.com

Just the thing needed to check out those sony drives in the old HP equipment. Congratulations, Joe, you have a floppy drive tester for early Sony 3 1/2 inch floppys. I have a similar hard drive tester. Paxton Astoria, OR

23 years, 2 months

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Pictures (DEC, calculators, etc) and Questions

by root＠parse.com

I've put together some pictures of parts of my collections of various things that I figured I'd brag about^H^H^H^H^H^H^H^H^H^H share with everyone on this list :-) There are pictures of various DEC PDP's, tons of pictures of boards, some antique test equipment, and some antique electronic calculators. My question is, does anyone have schematics for any of the non-DEC equipment? Specifically, GR1683, HP3440/3445, HP9100, and Tektronix 909? If so, please let me know! I'd be happy to host PDFs or GIFs or whatever form they might take... Here are the URLs: PDPs: http://www.parse.com/~pdp8/ Other: http://www.parse.com/~rk/collecting/ Enjoy! Cheers, -RK -- Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers! Robert Krten, PARSE Software Devices +1 613 599 8316. Realtime Systems Architecture, Consulting and Training at www.parse.com

23 years, 2 months

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Let the witch trials begin! Re: OT: Re: Going OT Re: (no subject)

by cb＠mythtech.net

>I'm a U.S. citizen (well, I might not be after the SS, Shrubs Spooks, >reads this... they might revoke my citizenship, even though my >ancestors came over here several hundred years ago) You know, I was just thinking about that myself. What would they do with someone like me, who's ancestors predate the US being here?!? I can get that someone who is a naturalized citizen they can kick back to whatever country they came from... but what are they going to do to me? Kick me back to Virginia? (one of my older ancestors was the given the Virginia colony to run) >The U.S. military had no right to do that, whether >overseas or over here... anyone who lands on someone's _private >property_ and then has the audacity to order the owners to leave, as >well as ordering people living in neighboring properties to leave, I don't know about Australia, but I suspect if you dig thru the laws, there is some exclusion here in the US that does allow for this. I base that on the fact that in the fire service we DO have the right to evict people from an area in the name of safety. For instance, if we have a gas main break, we can go house to house and forcably remove people in the effected area if we feel that their life is in danger. They don't have to consent, and we don't need a court order (although I suspect if we did it without damn good reason, we could probably be sued later). We can also keep custody of the property until we are "finished" with the scene. Here in NJ that is defined as the reasonable amount of time to handle the event and any followup investigation OR until the last EMS person leaves the scene, whichever happens first. -chris <http://www.mythtech.net>

23 years, 2 months

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TRS DOS-Plus?

by rigdonj＠cfl.rr.com

Does anyone have a copy of DOS-Plus for the TRS model 4 that they can send me? I picked up a 4 last weekend with no SW or docs and I already have DOS-Plus SW and manuals for the model 1. Joe

23 years, 2 months

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Floppy drive for Zenith 100

by acme＠ao.net

> OR you can get a copy of MS-DOS 4.00 and patch it to run on the Z-100. Jeez, Joe, now I'm really gagging. MS-DOS on a Z-100? Yuck. Later -- Glen 0/0

23 years, 2 months

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large disk platetrs?

by grg2＠attbi.com

The original IBM RAMAC disk platters were several feet across: "The 350 Disk File consisted of a stack of fifty 24" discs that can be seen to the left of the operator in the above picture. The capacity of the entire disk file was 5 million 7-bit characters, which works out to about 4.4 MB in modern parlance. This is about the same capacity as the first personal computer hard drives that appeared in the early 1980's, but was an enormous capacity for 1956. IBM leased the 350 Disk File for a $35,000 annual fee." The Control Data 808 disk drive also used platters that were at least thet large.

23 years, 2 months

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Fwd: [zx81] ZX81 users meeting in four weeks

by acme＠ao.net

Anyone in Europe (or elsewhere) care to join us? Later -- Glen 0/0 From: Peter Liebert-Adelt <P.Liebert(a)t-online.de> To: Glen Goodwin <acme(a)ao.net> Subject: [zx81] ZX81 users meeting in four weeks Date: 02/20/2003 5:20 PM > Hi ZX81 users > > May be it's a litte bit far away from you, but you should know: > > 7th ZX-TEAM-meeting will take place from friday, 21st of march 2003 at 18.oo > pm) > local time, until sunday 23rd of march 12.00 (noon) in the heart of Germany > in a little village called Dietges, which is loacted near the town of Fulda. > For more informations please mail or vistit our homepage: http://www.zx81.de > > Good by(t)e, "sinclairly" yours > > Peter > > > ----------- ZX81 MAILSERVER INFO ------------------------------------ > To WRITE a new message, send your message to mailto:zx81@jarasoft.net > To UNSUBSCRIBE send a message to mailto:listserv@jarasoft.net > with "unsubscribe zx81" in the SUBJECT of your message. > To SUBSCRIBE send a message to mailto:listserv@jarasoft.net > with "subscribe zx81" in the SUBJECT of your message. > ---------------------------------------------------------------------

23 years, 2 months

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TRS DOS-Plus?

by acme＠ao.net

Hey Joe (and listmembers) -- You and I discussed this on the phone today, but just for the general edification of the listmembers: If you need *any* kind of software for TRS-80s, check out www.trs-80.com. All of the major OSes are there, as well as manuals, emulators, etc. Later -- Glen 0/0 > Does anyone have a copy of DOS-Plus for the TRS model 4 that they can send > ? I picked up a 4 last weekend with no SW or docs and I already have DOS-Plus > and manuals for the model 1. > > Joe

23 years, 2 months

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Victor Computer anyone?

by beegee＠eastlink.net

We had several Victor 9000's. They ran CP/M and a proprietary MS-DOS. They had built-in codec. They actually predated the IBM PC back in 1980. They were the best available computers at the time, when the TRS-80 was prevalent on the market. My dad still may have one on his closet shelf. I threw mine away when I bought my first PC clone, a 4mhz, 4 mb ram 386SX.

23 years, 2 months

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large disk platters?

by julesrichardsonuk＠yahoo.co.uk

I just randomly remembered the other day that when I was at uni one of the computing lecturers one day rolled out an enormous disk platter to demonstrate how hard disk technology has changed over the years. The platter was pretty huge - around 1m in diameter. Any ideas as to what system it may have come from? Im just curious really - I've not seen much really old hardware up close, but the impression I got from the pictures I've seen is that drive technology didn't typically use platters *that* large. (and hell, this beats talking about the war :) cheers Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 2 months

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DEC RC25 Drives

by Fred.van.Kempen＠microwalt.nl

Owen: the RC25 are DEC's attempt at creating funny things. They are MSCP disks (connect to UDA50 or KDA50) with an SDI bus. They are actually two drives in a single coffin- one winchester drive (13MByte) and a removable cartridge drive, also 13MB. So, one could back on the winchester to the removable, and so on. I have one here.. just no cartridge. --f > -----Original Message----- > From: Owen Robertson [mailto:univac2@earthlink.net] > Sent: Wednesday, February 19, 2003 6:26 PM > To: Classic Computer Mailing List > Subject: DEC RC25 Drives > > > A few weeks ago, I got a rather nice PDP-11/34 (34A, turnkey > front panel) > from a scrap yard. They had two identical systems being used > in some sort of > electronic testing devices. I only got one system because the > other one > looked like it had been hit by a forklift a couple times. It > wasn't in great > shape, so I salvaged some cards from it (CPU, memory, DELUA, drive > controller, UNIBUS utility stuff...). > > My system is in very nice shape though. And along with the > CPU, I also got > two RC25 drives, along with controllers and cables. I've > never seen these > before. Can anyone tell me anything about them? They look > like nice drives, > but I've never really heard much about them. > > Anyway, this will be my third 11/34. Of the other two, I > still have (and > very much like) one, and one has been passed on to another > list member. > Anyway, more questions on recent acquisitions to come > shortly, I'm sure. > > -- > Owen Robertson

23 years, 2 months

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FYI: 25th Anniversary of Ward Christensen's BBS

by Robert_Feldman＠jdedwards.com

But note that the Climet claim is qualified by "a box in which a phone handset could be placed". How were the Bell modems interfaced? -----Original Message----- From: Eric Smith [mailto:eric@brouhaha.com] Sent: Thursday, February 20, 2003 2:16 PM To: cctalk(a)classiccmp.org Cc: allain(a)panix.com Subject: Re: FYI: 25th Anniversary of Ward Christensen's BBS I wrote about (binary) data transfer by modem: >> At least as early as 1965 IBM sold equipment that could do this, John Allain wrote: > Some more date/a: > ""the first model of the first commercial modem," a box in which a phone > handset could be placed, allowing a computer to say "beep beep" to > another over long distances. Lee was almost right. He actually had the > second model of the "magnetic/acoustic coupler," manufactured for > Tymshare, Inc. by Climet Instruments about 1966" > -- > http://membres.inforoots.org/dguardiola/Lee_Felsenstein/CMP-mails.htm The Bell 103A modem was introduced in 1962. I suspect that it was the first commercial modem. The date that's harder to place is when the 103A was first used for computer-to-computer data transfer, as opposed to teletype-to-teletype or teletype-to-computer communication.

23 years, 2 months

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DosPlus for the Model IV

by alhartman＠yahoo.com

> Does anyone have a copy of DOS-Plus for the TRS > model 4 that they can send me? I picked up a 4 last > weekend with no SW or docs and I already have > DOS-Plus SW and manuals for the model 1. > > Joe Joe, I don't have DosPlus for the Model IV that I know of (I might, somewhere..). But, I can recommend highly Multidos for the Model IV. I don't have the link handy, but if you search for it, you can find it. It's still availble for purchase in the $30.00 range last time I checked, and it is an Alternate OS for the TRS-80 that incorporates a lot of the strong points of DosPlus, including 80 Column support while in non CP/M mode. It's a nice OS, and the DISK BASIC is faster and smaller and more feature rich than most of the other ones available for the TRS-80. I remember porting my Copy of Connection-80 over to it (we renamed our custom version, Nybbles-80), and it was MUCH faster under Multidos than under Newdos/80, TRS-DOS or DosPlus, and I was able to take advantage of several MultiBASIC features to make it nicer... Boy, those were the days. I'm on the lookout for an LNW-80 Computer that works to set up a system again. I'm going to keep watch in April at the Trenton Computer Festival for a Model IV or Model III in the Flea Market. Regards, Al

23 years, 2 months

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HP 85 part needed

by rhahm＠nycap.rr.com

Hi, Does anyone have an extra clear plastic paper tearer they could part with? (Sits on top by the printer cover) Thanks, RH

23 years, 2 months

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rqdx1 standalone format

by chpap＠ics.forth.gr

I would like to do a bad sector scan on a RD52 connected to a RQDX1 controller (The machine is a pdp11/73 without OS) prior to installing BSD2.11.Is there a standalone program like zrqch0(standalone version of zrqc from the xxdp package - only for RQDX3) that can be downloaded directly to the pdp via vtserver and recognizes the RQDX1 , i.e. a version of zrqb or something similar?

23 years, 2 months

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Floppy drive for Zenith 100

by acme＠ao.net

Aw, come on, Joe! Enlighten the guy! (I know too) Glen 0/0 > At 09:57 AM 2/19/03 -0500, you wrote: > >Hello, > > > > Do you know if it is possible to install a 1.44MB floppy drive in a Zenith > >100? > > > > Thank you. > > > > Ken. > > > > Yes I know. > > Joe

23 years, 2 months

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