Re: Interest in Teac FD235J drives and FC-1 boards?

On 01/23/2018 09:27 PM, Fred Cisin via cctalk wrote: > Being part of the problem, . . . I was very happy in 1991, to finally > find Windoze 3.0 and 3.1 on CD-ROM, to stop juggling several dozen > installation floppies. The last-gasp installation floppies--Microsoft 21-sector DMF distribution (or

Re: Microvax II 'primer'?

On 01/23/2018 07:58 PM, Jules Richardson via cctech wrote: > On 01/22/2018 02:05 PM, allison via cctech wrote: >> >> >> On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote: >>> I can't believe you 'just carry it into the house' all by yourself, >>> unless you are professional athlete. >>> I also ha

Re: Microvax II 'primer'?

On 01/22/2018 02:05 PM, allison via cctech wrote: On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote: I can't believe you 'just carry it into the house' all by yourself, unless you are professional athlete. I also have a MicroVax II in the BA123 world box and it has wheels for a reason! The

Re: Microvax II 'primer'?

On 1/23/2018 7:58 PM, Jules Richardson via cctech wrote: On 01/22/2018 02:05 PM, allison via cctech wrote: On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote: I can't believe you 'just carry it into the house' all by yourself, unless you are professional athlete. I also have a MicroVax II in

Re: Interest in Teac FD235J drives and FC-1 boards?

On Tue, 23 Jan 2018, Chuck Guzis via cctalk wrote: The Compaticard IV and a few other ISA cards support ED mode also. But again, why? I still have a box of the Imation ED floppies (barium ferrite). The price was ridiculous for floppies of the time. Until CD-rOM became the standard for softwar

Re: Interest in Teac FD235J drives and FC-1 boards?

On 01/23/2018 08:45 PM, Fred Cisin via cctalk wrote: > They almost started to catch on, particularly in some PS/2. > I had one with a MicroSolutions "Backpack" parallel port interface. It would be a simple matter to upgrade a 1.44M backpack floppy with a 2.88M capable drive, as the controller is

Re: Interest in Teac FD235J drives and FC-1 boards?

2.8M runs at 1,000,000 bits per second. Such controllers exist, but are not very common. On Tue, 23 Jan 2018, Chuck Guzis via cctalk wrote: Fred. They've been fairly common since the 496 days (I've got several machines with the controllers on them, including a 486 VLB system). They almost st

Re: Keyboard "enthusiasts"

On Tue, Jan 23, 2018 at 12:35 PM, Guy Sotomayor via cctalk wrote: > …are the bane of my existence and should all rot in hell. > > Sorry, I just received an email from a “keyboard enthusiast” who was looking > for > various IBM 327x keyboards and wanted to know if I could help him and I needed > t

Re: Interest in Teac FD235J drives and FC-1 boards?

On 01/23/2018 08:14 PM, Fred Cisin via cctalk wrote: > Be aware that you will also need a different controller, or some minor > modifications. > > PC controllers normally support 250,000 bits per second ("360K", "720K"), > and 500,000 bits per second ("1.2M, "1.4M") > SOMETIMES 125,000 bits per s

Re: Interest in Teac FD235J drives and FC-1 boards?

On Tue, Jan 23, 2018 at 6:36 PM, Chuck Guzis via cctalk wrote: I've got a fellow with a stock of Teac FD235J (2.88) drives and about a dozen bare Teac FC-1 SCSI boards. On Tue, 23 Jan 2018, Jason T via cctalk wrote: I'm interested, if the drives can be used for imaging 2.88 media (a la IBM, et

RE: CX laser printers (Was: Sun3 valuations?

> At least close. > It's what Printerworks says that they use to repaint the Fedex purple > printers back to look like the other CX based printers. Check the Fred, Thanks for the info. I guess I may have to stop by the local Sherman-Williams and see what they have! p.s. while we are at it any

Re: Microvax II 'primer'?

On 01/22/2018 08:07 AM, Adrian Graham via cctalk wrote: At this stage I've got no idea if it's a SMPSU or a linear (I've not popped the panel off)... I suppose if it's linear then it perhaps doesn't even need a load to do its thing. If it's a switcher then I expect it'll at least need something

Re: Interest in Teac FD235J drives and FC-1 boards?

On Tue, Jan 23, 2018 at 6:36 PM, Chuck Guzis via cctalk wrote: > I've got a fellow with a stock of Teac FD235J (2.88) drives and about a > dozen bare Teac FC-1 SCSI boards. I'm interested, if the drives can be used for imaging 2.88 media (a la IBM, etc). Probably not so much the SCSI boards - th

Interest in Teac FD235J drives and FC-1 boards?

I've got a fellow with a stock of Teac FD235J (2.88) drives and about a dozen bare Teac FC-1 SCSI boards. I'm trying to gauge interest--I don't think he wants to sell them onesy-twosy, but I'm willing to act as intermediary for single-unit purchases if there is sufficient interest. --Chuck

Re: Ethernet cable (Was: Sun3 valuations?)

On 01/23/2018 04:04 PM, Al Kossow via cctalk wrote: > There is a clue in the PARC Ethernet Blue and White about this where > they mention they used CATV technology (where the vampire taps come > from ) but they don't actually say there that they used 75 Ohm cable, > terminated at both ends. Wasn'

Re: Ethernet cable (Was: Sun3 valuations?)

On 1/23/18 4:04 PM, Al Kossow via cctalk wrote: > He's holding up the wrong stuff if it's RG-8 > > Experimental Ethernet is 75 ohms. > I just went out to storage and got the run of cable that was used with a Dorado. I'll take some pics of it later. It is orange, looks like RG-6, is Malco 9827

Re: Keyboard "enthusiasts"

Al said: > On 1/23/18 11:01 AM, Ian Finder via cctalk wrote: >> I too have always enjoyed the analogy to ivory poachers. >> > > Those are computer front panel collectors. Sometimes this has a good outcome: a couple of years ago I acquired a slimline 11/10 with a home-made front switch panel, the

Re: Re: Keyboard "enthusiasts"

When  out and  about when I saw a keyboard with some unworldly number of   function keys  on it ( I recall one  with 3  rows of them... and other oddities  ) I   got and stashed them now  to find them..      We are stating a  move to  convert  boxed of  weird  odds and ends  stuff ( in the co

Re: Ethernet cable (Was: Sun3 valuations?)

On 1/23/18 12:27 PM, Paul Koning via cctalk wrote: > >> The stuff with better shield, marking bands, etc is 10 Mb; it's about 1.05cm >> in diagmeter. The black stuff (the stuff Dave is holding in the video) is >> 3Mb; >> the piece I have is .95 cm. > > The Ethernet spec says that the cable OD

Re: Keyboard "enthusiasts"

On 2018-01-23 7:49 PM, Al Kossow via cctalk wrote: On 1/23/18 10:53 AM, Noel Chiappa via cctalk wrote: it seems these people do it for 'fun'. As an experiment I put a couple of obscure mechanical keyboards up on eBay, like Tektronix reed switch APL ones and NOS Kaypros with a high price bu

Re: ISO 9816 small keyboard

On 2018-01-23 7:42 PM, Al Kossow via cctalk wrote: On 1/23/18 8:48 AM, Dave via cctalk wrote: Hi Al, What 9816 parts are required to run it?  Do you already have the 9816 and 9121 drive?  Also, is there a copy of CP/M-68K available somewhere for download? Dave On Monday, January 22, 2

Re: Keyboard "enthusiasts"

On 1/23/18 11:01 AM, Ian Finder via cctalk wrote: > I too have always enjoyed the analogy to ivory poachers. > Those are computer front panel collectors.

Re: Keyboard "enthusiasts"

On 1/23/18 10:53 AM, Noel Chiappa via cctalk wrote: > it seems these > people do it for 'fun'. As an experiment I put a couple of obscure mechanical keyboards up on eBay, like Tektronix reed switch APL ones and NOS Kaypros with a high price but a 'make offer' and have gotten zero interest in th

Re: ISO 9816 small keyboard

On 1/23/18 8:48 AM, Dave via cctalk wrote: > Hi Al, > What 9816 parts are required to run it?  Do you already have the 9816 and > 9121 drive?  Also, is there a copy of CP/M-68K available somewhere for > download? > Dave > On Monday, January 22, 2018, 1:13:08 PM CST, Al Kossow via cctalk >

Re: Keyboard "enthusiasts"

On Tue, Jan 23, 2018 at 5:26 PM, Geoffrey Oltmans via cctalk < cctalk@classiccmp.org> wrote: > On Tue, Jan 23, 2018 at 11:35 AM, Guy Sotomayor via cctalk < > cctalk@classiccmp.org> wrote: > > > …are the bane of my existence and should all rot in hell. > > > > > > In their defense (and yes, I thin

Re: Keyboard "enthusiasts"

On Tue, Jan 23, 2018 at 11:35 AM, Guy Sotomayor via cctalk < cctalk@classiccmp.org> wrote: > …are the bane of my existence and should all rot in hell. > > Sorry, I just received an email from a “keyboard enthusiast” who was > looking for > various IBM 327x keyboards and wanted to know if I could h

Re: Keyboard "enthusiasts"

On Tue, Jan 23, 2018 at 12:58 PM, william degnan via cctalk < cctalk@classiccmp.org> wrote: > Did anyone attend VCF South East this past year, there was a large table > run by a keyboard vendor. Just keyboards, laid out like tusks from poached > elephants. > Lol! I love it.

Re: Ethernet cable (Was: Sun3 valuations?)

On Tue, Jan 23, 2018 at 11:12 AM, Bill Gunshannon via cctalk wrote: > Vampire taps. Now there's a blast from the past. Somewhere around here > I still have my toolbag which still has my tap drill for installing those > taps. I also have a tap drill somewhere, but it was a rescue from a clean-o

Re: Ethernet cable (Was: Sun3 valuations?)

It was back in the days when $'s were very very tight, and I did 90% 80 and 40. Loss was greater but the cost was the major point. On Tue, Jan 23, 2018 at 1:23 PM, Bill Gunshannon via cctalk < cctalk@classiccmp.org> wrote: > I hope they all weren't on that yellow cable. @60 devices on a single

Re: Televideo 970

That reminds me, I still have one or two in the garage (yes, stored in uncontrolled conditions). Maybe a manual as well. If anyone is interested, contact me off-list. I'm in Austin, Texas, USA. mcl

Re: Ethernet cable (Was: Sun3 valuations?)

I hope they all weren't on that yellow cable. @60 devices on a single collision domain would likely not have worked very well. I also can't believe you used Ethernet RG8 for ham radio. I read the spec and even tried some (I had reels of that stuff at one time) and found it way too lossy even at

Re: Experimental Ethernet, XGP, etc.

> On Jan 23, 2018, at 4:17 PM, Glen Slick via cctalk > wrote: > > On Tue, Jan 23, 2018 at 11:15 AM, Paul Koning via cctalk > wrote: >> >> The cable spec given in the Ethernet standard doesn't mention additional >> shielding. It does differ from RG-8 in that it calls for foam dielectric >>

Re: Experimental Ethernet, XGP, etc.

On Tue, Jan 23, 2018 at 11:15 AM, Paul Koning via cctalk wrote: > > The cable spec given in the Ethernet standard doesn't mention additional > shielding. It does differ from RG-8 in that it calls for foam dielectric and > a higher velocity factor (0.77 rather than 0.66). Another common differe

Re: Ethernet cable (Was: Sun3 valuations?)

Nice story. On 01/23/2018 01:51 PM, Pete Lancashire via cctalk wrote: Today one would never get away with such I don't know. I've had to mine out quite a bit of old cable that was abandoned in place to make room for new installations. Frequently the building owners were more than happ

Re: Ethernet cable (Was: Sun3 valuations?)

A side story. I was the only 'customer' of a long run of that yellow cable, when we moved the 260 + 3/50's to a different location, I asked if they were going to reuse the cable. "Nope, cost to much to get it out of the roof trusses." I forget but it was a LONG run. Tektronix back in those days was

Re: Ethernet cable (Was: Sun3 valuations?)

On 01/23/2018 01:39 PM, Noel Chiappa via cctalk wrote: As can be seen in the photos, the 3Mb stuff (at least, the stuff we used) was also solid. The diameter of the center was a little smaller on the 3Mb than on the 10Mb; .16mm versus .23mm; not sure if that was just happenstance, or what. Th

Re: Experimental Ethernet, XGP, etc.

> On Jan 23, 2018, at 1:35 PM, Mark Kahrs via cctech > wrote: > > A few notes: > ... > The vampire tap transceiver used RG-8 cable originally. That's before they > added the lines around the cable and added additional shielding. The cable spec given in the Ethernet standard doesn't mention a

Re: Experimental Ethernet, XGP, etc.

On Tue, Jan 23, 2018 at 10:35 AM, Mark Kahrs via cctech < cct...@classiccmp.org> wrote: > A few notes: > > The experimental Ethernet speed was in fact 2.94 MHz: It's the Alto clock > divided by 2. > > The Alto based printer was called "SLOT" -- Scanning Laser Output > Terminal. It was plugged int

Re: SCSI Controller Hanging...

What SCSI controller are you using - MVME320, 327 or 328 ? Do you reset the MVME177 board using RESET command from 177bug> along with SCSI bus reset option? Best regards, Plamen On Tue, Jan 23, 2018 at 6:33 PM, Jack Harper via cctalk < cctalk@classiccmp.org> wrote: > > Greetings to the List fr

Experimental Ethernet, XGP, etc.

A few notes: The experimental Ethernet speed was in fact 2.94 MHz: It's the Alto clock divided by 2. The Alto based printer was called "SLOT" -- Scanning Laser Output Terminal. It was plugged into the Alto backplane and presented itself as a hardware peripheral controlled by microcode (as was th

Re: Ethernet cable (Was: Sun3 valuations?)

> From: Paul Koning > The nominal OD of RG-8/U is .. within spec for Ethernet cable. Oh, OK. I was just used to the 10Mb cable we used being slightly larger than the 3Mb cable we used. > Also, Ethernet requires a solid inner conductor (for the tap) while > RG-8/U may come strande

Re: Ethernet cable (Was: Sun3 valuations?)

> On Jan 23, 2018, at 3:19 PM, Noel Chiappa via cctalk > wrote: > >> From: Grant Taylor > >> I can fairly clearly see the RG-8/U on the side of the cable that David >> is holding ... Sure, there was probably a better alternative that came >> along after, with better shielding and marking band

Re: Ethernet cable (Was: Sun3 valuations?)

> From: Grant Taylor > I can fairly clearly see the RG-8/U on the side of the cable that David > is holding ... Sure, there was probably a better alternative that came > along after, with better shielding and marking bands. You keep mixing up the 3 Mbit and 10 Mbit. _They were no

Re: ISO 9816 small keyboard

On 2018-01-23 3:58 PM, Mattis Lind via cctalk wrote: tisdag 23 januari 2018 skrev Marc Verdiell via cctalk : Would the small keyboard be the same as the one on the "Munchkin" 2382A terminal? They appear on ebay regularly. It looks very similar to the keyboard that came with my 9816 but it is

Re: Ethernet cable (Was: Sun3 valuations?)

That's what I get for cutting and pasting from a Google search. Sorry... bill From: cctalk on behalf of Bill Gunshannon via cctalk Sent: Tuesday, January 23, 2018 2:22 PM To: Grant Taylor via cctalk; Grant Taylor Subject: Re: Ethernet cable (Was: Sun3 valua

Re: ISO 9816 small keyboard

tisdag 23 januari 2018 skrev Marc Verdiell via cctalk : > Would the small keyboard be the same as the one on the "Munchkin" 2382A > terminal? They appear on ebay regularly. It looks very similar to the keyboard that came with my 9816 but it is lacking the rotary encoder wheel on the upper left.

Re: Ethernet cable (Was: Sun3 valuations?)

On 01/23/2018 12:07 PM, Marc Verdiell via cctalk wrote: Have you seen this part of the video where David Boggs (designer of the first 3 Mb Ethernet card for the Alto), and Ron Crane (designer of the 10 Mb Ethernet) are doing a show and tell in their own words? You get to see the clamps, the dri

Re: ISO 9816 small keyboard

On 2018-01-23 3:24 PM, Marc Verdiell via cctalk wrote: Would the small keyboard be the same as the one on the "Munchkin" 2382A terminal? They appear on ebay regularly. http://www.hpmuseum.net/display_item.php?hw=421 There is one right now, but at a completely unreasonable price. https://www.eb

Re: Keyboard "enthusiasts"

On Tue, Jan 23, 2018 at 11:32 AM, Daniel Seagraves via cctalk < cctalk@classiccmp.org> wrote: > > > > On Jan 23, 2018, at 12:15 PM, Chuck Guzis via cctalk < > cctalk@classiccmp.org> wrote: > > > > Really, is this any worse than the gold bugs scrapping whole systems for > > the prospective precious

Re: Keyboard "enthusiasts"

> On Jan 23, 2018, at 12:15 PM, Chuck Guzis via cctalk > wrote: > > Really, is this any worse than the gold bugs scrapping whole systems for > the prospective precious metal content? It seems worse to me because the gold bugs are ignorant and greedy but the keyboardists are “computer people”

RE: ISO 9816 small keyboard

Would the small keyboard be the same as the one on the "Munchkin" 2382A terminal? They appear on ebay regularly. http://www.hpmuseum.net/display_item.php?hw=421 There is one right now, but at a completely unreasonable price. https://www.ebay.com/itm/Working-Vintage-HP-2382A-terminal-computer-with-

Re: Ethernet cable (Was: Sun3 valuations?)

If you want a real hoot try reading what "A System Ad

Re: Ethernet cable (Was: Sun3 valuations?)

On 01/23/2018 12:09 PM, Bill Gunshannon via cctalk wrote: "Transceivers should be installed only at precise 2.5-metre intervals. This distance was chosen to not correspond to the wavelength of the signal; this ensures that the reflections from multiple taps are not in phase. These suitable poin

Re: Ethernet cable (Was: Sun3 valuations?)

>From Wiki: "Transceivers should be installed only at precise 2.5-metre intervals. This distance was chosen to not correspond to the wavelength of the signal; this ensures that the reflections from multiple taps are not in phase. These suitable points are marked on the cable with black bands."

Re: Ethernet cable (Was: Sun3 valuations?)

> On Jan 23, 2018, at 11:10 AM, Bill Gunshannon via cctalk > wrote: > > If you didn't locate the transceivers on those black marks you would > have had terrible performance as that affects collisions. Timing (among > other things like grounding) was very important with that version of > etherne

RE: Ethernet cable (Was: Sun3 valuations?)

Noel, Have you seen this part of the video where David Boggs (designer of the first 3 Mb Ethernet card for the Alto), and Ron Crane (designer of the 10 Mb Ethernet) are doing a show and tell in their own words? You get to see the clamps, the drill, the transceivers, the cards, and some of the in

Re: Ethernet cable (Was: Sun3 valuations?)

On 23/01/2018 16:48, Grant Taylor via cctalk wrote: On 01/23/2018 09:10 AM, Bill Gunshannon via cctalk wrote: If you didn't locate the transceivers on those black marks you would have had terrible performance as that affects collisions.  Timing (among other things like grounding) was very impor

Re: Keyboard "enthusiasts"

I too have always enjoyed the analogy to ivory poachers. On Tue, Jan 23, 2018 at 10:58 AM, william degnan via cctalk < cctalk@classiccmp.org> wrote: > > > > Well, the latter are presumably in it as a business, whereas it seems > these > > people do it for 'fun'. > > > > Now there's an idea: perha

Re: Apollo Software

Bill, I have an Apollo here with an 8" drive and I'm hunting for an 8" Domain media set so I can reinstall the OS. If you get them to me I can image them and send images to Al. - Ian On Tue, Jan 23, 2018 at 7:44 AM, Daniel Seagraves via cctalk < cctalk@classiccmp.org> wrote: > > > > On Jan 23,

Re: Keyboard "enthusiasts"

> > Well, the latter are presumably in it as a business, whereas it seems these > people do it for 'fun'. > > Now there's an idea: perhaps we could convince them that pulling the wings > off flies is a more entertaining hobby? > > Noel > Did anyone attend VCF South East this past year, the

Re: Keyboard "enthusiasts"

> From: Chuck Guzis > Really, is this any worse than the gold bugs scrapping whole systems > for the prospective precious metal content? Well, the latter are presumably in it as a business, whereas it seems these people do it for 'fun'. Now there's an idea: perhaps we could convince

Re: Televideo 970

On 01/23/2018 09:54 AM, Aaron Jackson wrote: 1) The EMI filter had gone open-circuit - it's one of those metal can types which is integrated with the IEC power input connector. Are these still obtainable anywhere? It seems like equipment these days just has the filtering directly on the PSU boa

Re: Keyboard "enthusiasts"

I get these all the time with Lisp Machines. "Yo can I get a keyboard!" UGH. On Tue, Jan 23, 2018 at 10:15 AM, Chuck Guzis via cctalk < cctalk@classiccmp.org> wrote: > On 01/23/2018 09:44 AM, Daniel Seagraves via cctalk wrote: > > > One of them scrapped a Symbolics XL for the keyswitches. That w

Re: SCSI Controller Hanging...

Great information/advice Jules. I appreciate it - and know more about SCSI now than before. Regards, Jack At 11:15 AM 1/23/2018, Jules Richardson via cctalk wrote: On 01/23/2018 10:33 AM, Jack Harper via cctalk wrote: Greetings to the List from the Snowy Rocky Mountains. Beautiful clear

Re: SCSI Controller Hanging...

On 01/23/2018 10:33 AM, Jack Harper via cctalk wrote: Greetings to the List from the Snowy Rocky Mountains. Beautiful clear sunny day here at +9F :) It's a toasty 20F here in northern MN :) I have never before dealt with SCSI as a programmer - does this sound like something is configured in

Re: Keyboard "enthusiasts"

On 01/23/2018 09:44 AM, Daniel Seagraves via cctalk wrote: > One of them scrapped a Symbolics XL for the keyswitches. That would > be bad enough, but it gets worse - They did because they thought it > was a CADR "Space Cadet” keyboard. Really, is this any worse than the gold bugs scrapping whole s

Re: Keyboard "enthusiasts"

> On Jan 23, 2018, at 11:35 AM, Guy Sotomayor via cctalk > wrote: > > …are the bane of my existence and should all rot in hell. > > Sorry, I just received an email from a “keyboard enthusiast” who was looking > for > various IBM 327x keyboards and wanted to know if I could help him and I nee

Re: SCSI

Jim - I appreciate the great SCSI information. The hang is not at all frequent. I do resets many times during a programming session as my "marvelous" code hangs or otherwise goes crazy and into thew weeds :)and I only see a SCSI hang every few days. Regards, Jack At 10:28 AM 1/2

Keyboard "enthusiasts"

…are the bane of my existence and should all rot in hell. Sorry, I just received an email from a “keyboard enthusiast” who was looking for various IBM 327x keyboards and wanted to know if I could help him and I needed to vent a little. I sent him a polite “no way in hell” response but I’m still a

Re: SCSI Controller Hanging...

Hello Bill - Yes, there are two 4GB (32-bit addressing) SCSI drives on the system and they do have different drive numbers. I will double check the SCSI termination resistor things. Motorola documentation is very sparse on this - "attach the termination resistor" - nothing on exactly where

Re: Ethernet cable (Was: Sun3 valuations?)

On 01/23/2018 09:10 AM, Bill Gunshannon via cctalk wrote: If you didn't locate the transceivers on those black marks you would have had terrible performance as that affects collisions. Timing (among other things like grounding) was very important with that version of ethernet hardware. It's

Re: ISO 9816 small keyboard

Hi Al, What 9816 parts are required to run it?  Do you already have the 9816 and 9121 drive?  Also, is there a copy of CP/M-68K available somewhere for download? Dave On Monday, January 22, 2018, 1:13:08 PM CST, Al Kossow via cctalk wrote: I acquired a copy of CP/M-68K and am trying to

Re: SCSI Controller Hanging...

On Tue, Jan 23, 2018 at 11:33 AM, Jack Harper via cctalk < cctalk@classiccmp.org> wrote: > > Greetings to the List from the Snowy Rocky Mountains. > > Beautiful clear sunny day here at +9F :) > > The SCSI controller on the 68K development system (VMEbus) that I have > cobbled together occasionally

SCSI Controller Hanging...

Greetings to the List from the Snowy Rocky Mountains. Beautiful clear sunny day here at +9F :) The SCSI controller on the 68K development system (VMEbus) that I have cobbled together occasionally hangs after I reset one of the processor boards (there are four MVME177-005 68060 boards in the V

Re: Ethernet cable (Was: Sun3 valuations?)

Vampire taps. Now there's a blast from the past. Somewhere around here I still have my toolbag which still has my tap drill for installing those taps. bill From: cctalk on behalf of Al Kossow via cctalk Sent: Tuesday, January 23, 2018 11:10 AM To: cctalk@clas

Re: Ethernet cable (Was: Sun3 valuations?)

If you didn't locate the transceivers on those black marks you would have had terrible performance as that affects collisions. Timing (among other things like grounding) was very important with that version of ethernet hardware. bill From: cctalk on behalf of No

Re: Ethernet cable (Was: Sun3 valuations?)

there are pictures of the transceiver w/o the vampire tap on bitsavers under http://bitsavers.org/pdf/xerox/ethernet_3mb/ On 1/23/18 7:51 AM, Noel Chiappa via cctalk wrote: > > From: Grant Taylor > > > According to the following page, it was not RG-8 cable ... As such it > > was purpo

Re: Televideo 970

> 1) The EMI filter had gone open-circuit - it's one of those metal can types > which is integrated with the IEC power input connector. Are these still > obtainable anywhere? It seems like equipment these days just has the > filtering directly on the PSU board, rather than as a separate module. I'

Re: Ethernet cable (Was: Sun3 valuations?)

> From: Grant Taylor > According to the following page, it was not RG-8 cable ... As such it > was purpose built. The 10MBit cable, yes; it was custom (you can see 'Ethernet' printed on the chunk in the picture). (I'd forgotten about the black stripes! I'm not sure we really bothered

Re: Apollo Software

> On Jan 23, 2018, at 9:33 AM, jim stephens via cctalk > wrote: > The real work was done in the back rooms @ Mission control, with certain > features implemented on the systems onboard the rocket. > > You couldn't carry out a mission w/o the ground supporting either system with > computatio

Re: Apollo Software

On 1/23/2018 7:24 AM, Daniel Seagraves via cctalk wrote: On Jan 23, 2018, at 9:14 AM, jim stephens via cctalk wrote: On 1/23/2018 6:30 AM, Daniel Seagraves via cctalk wrote: The Saturn software, which is what actually flew from Earth to the moon, The navigation and guidance was in the

Re: Apollo Software

> On Jan 23, 2018, at 9:14 AM, jim stephens via cctalk > wrote: > > > > On 1/23/2018 6:30 AM, Daniel Seagraves via cctalk wrote: >> The Saturn software, which is what actually flew from Earth to the moon, > The navigation and guidance was in the CM and LM processors. The Saturn IBM > firmw

Re: Apollo Software

> From: Daniel Seagraves > The Saturn software, which is what actually flew from Earth to the > moon, was lost. You mean the Instrumentation Unit on top of the S-IVB stage? That was discarded when the S-IVB and CSM separated shortly after leaving Earth orbit (about 6 hours after launc

Re: Apollo Software

On 1/23/2018 6:30 AM, Daniel Seagraves via cctalk wrote: The Saturn software, which is what actually flew from Earth to the moon, The navigation and guidance was in the CM and LM processors.  The Saturn IBM firmware is lost, but was under command of the LM and CM computers, and is running on

Re: VCF PNW 2018 - less than three weeks away!

On Sun, 2018-01-21 at 17:33 -0800, Michael Brutman via cctalk wrote: > Come join us in Seattle on February 10th and 11th for the first VCF PNW. > We have 20 exhibits, six speakers, and a panel discussion planned. There > will be a consignment area for buying and selling vintage gear I'm clear

Re: Apollo Software

> On Jan 22, 2018, at 10:35 AM, Noel Chiappa via cctalk > wrote: > >> From: Paul Koning > >> I[t] just dawned on me that the subject is Apollo the company bought by >> HP, not Apollo the spacecraft. Oh well... > > Actually, that stuff has all been saved, and run under simulators Not all, no

Televideo 970

Hi All, I got a lovely Televideo 970 terminal from another list-member over the weekend. Aside from some PSU capacitor issues, it needs a little TLC: 1) The EMI filter had gone open-circuit - it's one of those metal can types which is integrated with the IEC power input connector. Are these

Re: Sun3 valuations?

On Mon, 22 Jan 2018, Al Kossow wrote: Not that anyone seems to collect printers, but the LBP1 and the Canon engine were some of the first 'inexpensive mass-produced' laser printers. I still have the Kyocera F-1010 that my father bought 30 years ago. It still works well, but the foam strips fo