RE: Commodore and Atari

Bit far - I'm in Australia :-) Have a friend who wants to get into classic computing and wants to return to his roots with an Atari - I said I'd keep an eye out for him. ++ Kevin Parker ++ -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf

RE: Substituting DSHD for DSDD disks (or DS2D if you prefer)

[HD 3.5" disks and the density-select hole] > Of course, on a DD-only drive, the drive is blind to the extra hole. Not always! The original Sony full-height drives (the 600rm ones) have a disk-inserted sensor positioned exactly where that hole is. So if you insert an HD disk the drive doesn't

Re: testing...

hmm. strange.. this seems to work. thanks for ignoring this. simon On 26-10-15 08:47, simon wrote: Please ignore. it seems my mail does not get through the last couple of times. -- Met vriendelijke Groet, Simon Claessen drukknop.nl

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 10/25/2015 11:12 PM, tony duell wrote: Not always! The original Sony full-height drives (the 600rm ones) have a disk-inserted sensor positioned exactly where that hole is. So if you insert an HD disk the drive doesn't detect it. It is rumoured this was deliberate (positioning of the HD hole)

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

and the first hp-150 drive set, the hp-9121, was single sided double density SS/DD discs (270Kb). sure was glad when the 9122 came out! Always looking for more HP-150 stuff for our display... any one have a monarch butterfly advertising poster? Ed# _www.smecc.org_

RE: Siemens T100?

> -Oorspronkelijk bericht- > Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens simon > Verzonden: maandag 26 oktober 2015 9:18 > Aan: On-Topic and Off-Topic Posts > Onderwerp: Siemens T100? > > (As previous post did not get through, again a repost) > > > Hi All, > > I was

testing...

Please ignore. it seems my mail does not get through the last couple of times. -- Met vriendelijke Groet, Simon Claessen drukknop.nl

looking for Siemens T100 telexes in the US

(As previous post did not get through, again a repost) Hi All, I was contacted via the greenkeys list for my spare parts of the two T100 telexes, but I think it should be possible to obtain them in the states. Is there someone willing to part of their broken or otherwise non/half functional

filtering?

Hi All, it seems that some of my messages do not get through to the list. Is there a filter on this list of some sort? -- Met vriendelijke Groet, Simon Claessen drukknop.nl

Re: NeXT Cube - powers on briefly then off again

Even a 10W resistor will get really hot. I embed two 5W resistors into a pentium class CPU cooler for a good compromise on space/thermal concerns. You can see a pic on my site here: http://asterontech.com/Asterontech/next_adb_conversion.html Internal to the cube, I've found using a 5W appliance

Re: Couplers for Sun DB13W3<->VGA DE15 adapter

The socket is a metal piece with an inside thread on one end and an outside thread on the other end. You commonly see them on serial connectors usually on the equipment the cable attached too. The bottoming out I was refering too was it you use a standoff you may have too much exposed thread on

Re: looking for Siemens T100 telexes in the US

> (As previous post did not get through, again a repost) Actually, it got through just fine, at least to me. I've sent an offlist copy of the whole post as it arrived in my mailbox; if you don't get it, something is disrupting your incoming mail stream /~\ The ASCII

RE: HP2100 top card connectors

> > On the HP 2100 series machines (and possibly 1000s?) - those top of > the card connectors - are they the 2 x 24 contact on 0.156" centers > types? In most cases yes. There are some which are obviously 0.1" pitch. -tony

US South: AS/400 system

Spotted on CL, not near it, no relation to seller, etc: http://jackson.craigslist.org/sys/5246929532.html AS/400 is a narrow niche in the hobby but a complete running system can be hard to come by. Also, terminals are nice. j

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

Hi Toby, I'll try to post some photos in a week or 2. Rob has asked me to make some internal load boards for him so I can show more details while I'm at it. The bulb is the best option in my opinion and seems to work just fine without additional cooling in the cube. -- Brian On Mon, Oct 26,

Re: Oddball question: really small terminals

On 10/25/2015 08:32 PM, william degnan wrote: On Oct 25, 2015 8:54 PM, "Jon Elson" wrote: On 10/25/2015 05:27 PM, Mike Ross wrote: A pull-out keyboard in the base? I have one too. Would be perfect if it worked, and I had half a dozen of them! No, mine did NOT have

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> On Oct 26, 2015, at 2:49 PM, Chuck Guzis wrote: > > On 10/26/2015 10:52 AM, Toby Thain wrote: > > >> Damn, I already ordered a pile of HVAC gear. >> >> j/k - yeah that was what I was basically planning, Ian ... just as a >> noob, I'm not totally confident with what a

Re: Order now ! PDP8 front panels

Rob, Here is a high quality PDP-11/70 foto: ftp://jhoppe.ddns.net/blinkenbone/pdp1170.jpg I used it for the photographic panel Java simulation http://blinkenbone.com/projects/pdp-11-70-panel-on-blinkenbone/243-simulated-pdp-11-70-panel-on-simh The 20MPixel camera was aligned to the axis of the

RE: Substituting DSHD for DSDD disks (or DS2D if you prefer)

> > Yes, the Sony OA-D32 drives. Single-sided 600 RPM. One *could* argue, > that, given the data rate, it's already "high density" (of a sort). I I would say it's normal double density (the spacing of the flux transitions on the disk is the same as on a PC 720K disk) but a high data rate due

RE: Oddball question: really small terminals

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jon Elson > Sent: 26 October 2015 19:09 > To: gene...@classiccmp.org; discuss...@classiccmp.org:On-Topic and Off- > Topic Posts > Subject: Re: Oddball question: really small

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

Well, we indeed know the voltage (V or E) but not the current (I) used in your formula; since I is E/R then power is simply E^2/R, so 20 Ohms at 12V has to dissipate 144/20 = 7.2 W. m - Original Message - From: "Ian Finder" To: "General Discussion: On-Topic

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On 2015-10-26 2:32 PM, Ian Finder wrote: Not sure how much of a noob you are, although you repeatedly claim to be one so just on the safe side we'll cover some Engineering for Poets (or Programmers) to reassure you ;) -- V = I * R Power (watts) = I * V You know the voltage of the monitor. You

RE: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> My favorite low tech dummy load is the one my father came up with: a couple > of > resistors (carbon composite is best, carbon film or metal film will do), 1-2 > watt size, > in a jar filled with water. Works just fine for 100 watts or so, and is > useable not just > for power supplies

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On Mon, 26 Oct 2015, Chuck Guzis wrote: The talk about dummy loads brought back a memory of the Heath Cantenna--an RF dummy load consisting of a Globar (noninductive) resistor in a gallon paint can filled with mineral oil with an attachment to a SO-239 "UHF" connector on top. IIRC, it was

Re: filtering?

On Mon, Oct 26, 2015, simon wrote: > Hi All, > > it seems that some of my messages do not get through to the list. Is there a > filter on this list of some sort? Someone who knows more should chime in, but I believe messages to the list go through a human filter based on how on-topic they are,

Re: PROMs and EPROMs, specifically 2332/2532/2732

On 26/10/2015 17:09, "John Robertson" wrote: > Hi Adrian, > > Perhaps one final test for your 2332s is to do a Diode Test on the pins > relative to the ground pin (pin 12) and Vcc pin (24). These should sow > either open or something like 0.6 or higher voltage drop across

Re: filtering?

"imagine traveling beyond time, you entering the cctalk-zone!" OOooOOOoohhh ;-) On 26-10-15 22:06, Lawrence Wilkinson wrote: On 26/10/15 21:58, Eric Christopherson wrote: On Mon, Oct 26, 2015, simon wrote: Hi All, it seems that some of my messages do not get through to

Mac IIsi - SoG?

Can anyone confirm whether a Mac IIsi spits out sync-on-green (and only sync-on-green) or not? I've found mixed info on the 'net so far. I've got a system here which makes encouraging startup noises, but isn't outputting any video to a VGA screen (adapter cable OK with my other Macs). If

Re: PDP 8 panels. Feedback

To effectively drill in plastics you need to run the drill press on the highest speed you can and use a freshly sharpened drill bit. It kinda melts its way through. On 10/26/2015 8:28 PM, Bob Rosenbloom wrote: > On 10/26/2015 8:05 PM, rod wrote: >> Hi Guys >> I need to get some comments

Re: PDP 8 panels. Feedback

On Mon, Oct 26, 2015 at 11:05 PM, rod wrote: > Hi Guys > I need to get some comments on the following. > > 1. Would a matt finish be better than the current glossy one? Hard to say, but generally, I think a closer match to the original is better. Is

Re: PDP 8 panels. Feedback

On 10/26/2015 8:05 PM, rod wrote: Hi Guys I need to get some comments on the following. 1. Would a matt finish be better than the current glossy one? 2. Should the round holes be pre-drilled? Regards Rod I would prefer the holes be drilled. It's not easy to drill the plastic

PDP 8 panels. Feedback

Hi Guys I need to get some comments on the following. 1. Would a matt finish be better than the current glossy one? 2. Should the round holes be pre-drilled? Regards Rod

Re: PDP 8 panels. Feedback

On 10/26/2015 08:54 PM, wulfman wrote: To effectively drill in plastics you need to run the drill press on the highest speed you can and use a freshly sharpened drill bit. If this is Perspex/Plexiglas, I've had great results with a good sharp Forstner bit in my drill press at medium (say 750

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On 10/26/2015 10:52 AM, Toby Thain wrote: Damn, I already ordered a pile of HVAC gear. j/k - yeah that was what I was basically planning, Ian ... just as a noob, I'm not totally confident with what a single air cooled part can dissipate. The talk about dummy loads brought back a memory of

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> On Oct 26, 2015, at 10:45 AM, Jerry Weiss wrote: > > Water in the dummy load? Water cooled - sure. Water immersed? Even > though I see it posted on the web, i have may doubts it would be a stable > method. How stable do you need? > > Oil is the usual medium here.

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> On Oct 26, 2015, at 11:02 AM, Dale H. Cook wrote: > > At 10:45 AM 10/26/2015, Jerry Weiss wrote: > >> Water in the dummy load? Water cooled - sure. Water immersed? Even >> though I see it posted on the web, i have may doubts it would be a stable >> method. > > I

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

Water in the dummy load? Water cooled - sure. Water immersed? Even though I see it posted on the web, i have may doubts it would be a stable method. Oil is the usual medium here. Excluding of course the pre-1980 transformer oils that were notorious for having contaminated PCB’s

Re: looking for Siemens T100 telexes in the US

On 10/26/2015 12:56 AM, simon wrote: (As previous post did not get through, again a repost) Hi All, I was contacted via the greenkeys list for my spare parts of the two T100 telexes, but I think it should be possible to obtain them in the states. Is there someone willing to part of their

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

At 10:45 AM 10/26/2015, Jerry Weiss wrote: >Water in the dummy load? Water cooled - sure. Water immersed? Even >though I see it posted on the web, i have may doubts it would be a stable >method. I concur. Tap water may have contaminants (such as chlorine) that will cause electrical

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 2015-10-26 11:38 AM, Jules Richardson wrote: On 10/24/2015 09:14 PM, Fred Cisin wrote: Are we really running short of "720K" floppies? I went around all the local places that I could think of a couple of years ago and bought up whatever stock of floppies that I could find (and picking

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

Distilled water will not conduct. Its a perfect insulator. It will work fine. On 10/26/2015 7:45 AM, Jerry Weiss wrote: > Water in the dummy load? Water cooled - sure. Water immersed? Even > though I see it posted on the web, i have may doubts it would be a stable > method. > > Oil is

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> On Oct 26, 2015, at 9:43 AM, Toby Thain wrote: > > On 2015-10-26 1:02 AM, Brian Archer wrote: >> Even a 10W resistor will get really hot. I embed two 5W resistors into a >> pentium class CPU cooler for a good compromise on space/thermal concerns. My favorite low

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 10/24/2015 09:14 PM, Fred Cisin wrote: Are we really running short of "720K" floppies? I went around all the local places that I could think of a couple of years ago and bought up whatever stock of floppies that I could find (and picking sure were slim). Quite a few boxes of 3.5" HD, a

Re: Quantum Link (Q-Link)

Originally I thought it was basing it on Comnet or Compuserve but after reading these comments, I now think Quantum Link makes more sense. They are doing a good job portraying the various personalities, especially the disfunctional ones. In the episode where there is a room full of people and

Anyone near Erie, PA? Pickup/Pack/Ship Help

Greetings, all, I have a contact in Erie, PA that has a piece of equipment that I need to get, but he is unwilling to ship it, and making a trip to his location to pick it up is pretty unlikely given time/expense. If there is a ClassicCmp'er that lives nearby Erie, and would be willing to

Re: Siemens T100?

Hmm. very strange that only this specific mail and all probable answers did not get through. Rick Murphy kindly send a reply directly to me (thanks for that) It seems that some word in my subject did trigger an spam filter somewhere. There are no mails in my spambox on the webmail client to

Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On 2015-10-26 1:02 AM, Brian Archer wrote: Even a 10W resistor will get really hot. I embed two 5W resistors into a pentium class CPU cooler for a good compromise on space/thermal concerns. You can see a pic on my site here: http://asterontech.com/Asterontech/next_adb_conversion.html Hi Brian

Order now ! PDP8 front panels

Hi Guys OK I'm open for orders for the choice of the following: PDP-8/e (Type A) PDP-8/e (Type B) PDP-8/f PDP-8/m Existing orders price as pre-paid New orders price will be advised based on batch sizes /f and /m are going to be a few dollars more as they need an extra screen for the logos.

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On Oct 26, 2015, at 10:09 AM, Paul Koning wrote: >> I concur. Tap water may have contaminants (such as chlorine) that will cause >> electrical leakage. > > Sure, but so what? A dummy load is supposed to have electrical leakage. All > that water contamination would do

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> On Oct 26, 2015, at 11:21 AM, Tapley, Mark wrote: > > On Oct 26, 2015, at 10:09 AM, Paul Koning wrote: > >>> I concur. Tap water may have contaminants (such as chlorine) that will >>> cause electrical leakage. >> >> Sure, but so what? A dummy

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On Mon, 26 Oct 2015, Jules Richardson wrote: On 10/24/2015 09:14 PM, Fred Cisin wrote: Are we really running short of "720K" floppies? I've never had any luck finding used disks anywhere locally; people are a bit too concerned about data theft these days, and all of that seems to go

Re: Order now ! PDP8 front panels

On Mon, Oct 26, 2015 at 9:44 AM, rod wrote: > New panels in design stage for the 11/40 up to 11/70. > Scans, Photos and "I want one" for the above to me please. I should have some scans of a real 11/70 plexi available to send soon. -ethan

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On 2015-10-26 16:09, Paul Koning wrote: On Oct 26, 2015, at 11:02 AM, Dale H. Cook wrote: At 10:45 AM 10/26/2015, Jerry Weiss wrote: Water in the dummy load? Water cooled - sure. Water immersed? Even though I see it posted on the web, i have may doubts it would

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

> > OK, so a couple years back, I wanted to have some chemistry fun with the kids. > So, I got out the jump cables, clamped them onto some aluminum foil, stuffed > the foil into test tubes, filled the tubes with water, inverted both of them > in the same basin and sprinkled in a little salt,

Re: Quantum Link (Q-Link)

so this show is closer to reality than I thought?? not knowing quantum link none of the other services seemed to fit... Ed# In a message dated 10/26/2015 7:54:38 A.M. US Mountain Standard Time, et...@757.org writes: > Originally I thought it was basing it on Comnet or

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

My recommendation of oil is based upon my decades of experience with broadband dummy loads from 60 watts to 2.5 kilowatts. The dummy loads that I have worked with for medium wave and below and from 5 kilowatts down have all been convection air cooled. Broadband dummy loads that I have used for

Re: PROMs and EPROMs, specifically 2332/2532/2732

PET ROMs archive here: http://www.zimmers.net/anonftp/pub/cbm/firmware/computers/pet/index.html - Original Message - From: "John Robertson" To: "General Discussion: On-Topic and Off-Topic Posts" Sent: Monday, October 26, 2015 1:09 PM

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

On 2015-10-26 1:23 PM, Ian Finder wrote: This thread took a turn for the absurd. Oil? Water? What a practical bunch of people. /s They make resistors with adequate cooling... Almost as if they're rated for a certain number of watts of dissipation and you can buy them based on that. They are

Re: PROMs and EPROMs, specifically 2332/2532/2732

On 10/25/2015 4:37 PM, Adrian Graham wrote: On 25/10/2015 17:19, "John Robertson" wrote: Hi John and others, Thanks for that. I removed the diodes and wired 2332 (21) to 2372 (24) leaving the A11 swap in place, the programmer complained about pin 18 missing. The adapter in

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

This thread took a turn for the absurd. Oil? Water? What a practical bunch of people. /s They make resistors with adequate cooling... Almost as if they're rated for a certain number of watts of dissipation and you can buy them based on that. They are resistors after all. And if they

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

On 10/26/2015 01:04 AM, couryho...@aol.com wrote: and the first hp-150 drive set, the hp-9121, was single sided double density SS/DD discs (270Kb). sure was glad when the 9122 came out! I supsect that the Sony SMC-70 may have been among the first systems to come out with the things.

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

please skip this ridicule and grab yourself a couple of headlights from a car. On 26-10-15 17:16, Dale H. Cook wrote: My recommendation of oil is based upon my decades of experience with broadband dummy loads from 60 watts to 2.5 kilowatts. The dummy loads that I have worked with for

Re: Model 152 PSU dummy loads - Re: NeXT Cube - powers on briefly then off again

Not sure how much of a noob you are, although you repeatedly claim to be one so just on the safe side we'll cover some Engineering for Poets (or Programmers) to reassure you ;) -- V = I * R Power (watts) = I * V You know the voltage of the monitor. You know the resistance of your resistor. So,

Re: Substituting DSHD for DSDD disks (or DS2D if you prefer)

Chuck good to know we probably need some - I do not think we have any good clean ones new here... will check Ed# In a message dated 10/26/2015 9:50:44 A.M. US Mountain Standard Time, ccl...@sydex.com writes: On 10/26/2015 01:04 AM, couryho...@aol.com wrote: > and the