Re: Retro networking / WAN communities

On 4/12/2022 1:28 PM, Grant Taylor via cctalk wrote: On 4/12/22 7:56 AM, Todd Goodman via cctalk wrote: The big difference in my mind between bridge and switch is:   * Switches learn what port given MACs are on and only sends unicast     traffic destined for that MAC address on that port

Re: Retro networking / WAN communities

On 4/12/2022 10:50 AM, Paul Koning wrote: On Apr 12, 2022, at 10:44 AM, Todd Goodman wrote: On 4/12/2022 10:12 AM, Paul Koning wrote: On Apr 12, 2022, at 9:56 AM, Todd Goodman via cctalk wrote: ... The big difference in my mind between bridge and switch is: * Switches learn what port

Re: Retro networking / WAN communities

On 4/12/2022 10:12 AM, Paul Koning wrote: On Apr 12, 2022, at 9:56 AM, Todd Goodman via cctalk wrote: ... The big difference in my mind between bridge and switch is: * Switches learn what port given MACs are on and only sends unicast traffic destined for that MAC address on that port

Re: Retro networking / WAN communities

On 4/12/2022 9:49 AM, Paul Koning via cctalk wrote: On Apr 12, 2022, at 12:42 AM, Grant Taylor wrote: On 4/11/22 6:16 PM, Paul Koning wrote: [..SNIP..] I think there is a large, > 80%, overlap between switch and bridge, but they aren't perfect. Bridging some traffic between otherwise

Re: seeking Motorola M68MM01A2 documentation

Excellent information Jonathan! I generally carry the s100computers and many RetroBrew board and have ordered over 5000 boards from PCBCart.com I'm not a board designer but if people have any questions about PCB Cart and the board ordering process, feel free to contact me privately. Todd

Re: Plessy core memory

Hi, I have Joerg's Unibone bare boards available (and others listed at https://retrobrewcomputers.org/doku.php?id=boardinventory#dec_digital_boards_designed_by_joerg_hoppe). Feel free to contact me privately if interested. Thanks, Todd On 1/10/2022 2:43 PM, Chris Zach via cctalk wrote: Hm.

Re: RK11-C indicator panel inlays?

Board cost depends on quantity, the more you have made, the lower the per board cost. PCBCart.com charges a "tooling" charge for a new design.  They do look over the designs carefully and reorders don't incur that charge. To get an idea, I had a run of Joerg Hoppe's DEC Flip-Chip Extender

Re: RK11-C indicator panel inlays?

I've used PCBCart.com to have thousands of boards produced. Mostly with gold fingers They've done a good job with the boards, though they're mostly two-layer and not overly complicated. You just tell them how many gold fingers you want (and if you get it wrong, their design check will

Re: PDP-11/70 Boards

On 11/30/2021 4:42 PM, Fritz Mueller via cctalk wrote: I built mine from a layout on Tom Uban’s site: http://www.ubanproductions.com/museum.html Did you use that directly with ExpressPCB and order from ExpressPCB or did you convert to more standard gerbers? I just went with ExpressPCB for

Re: FTGH

Hi Jonathan, I currently have no software for this (he might find it later). I'm happy to pay for your trouble if you're willing to pass it along? Thank you! Todd On 10/16/2021 9:10 AM, Jonathan Chapman via cctalk wrote: Includes HSC Inc’s CO16 8086 coprocessor with 256KB memory I think

Re: Extremely CISC instructions- C compilers.

On 8/25/2021 1:58 PM, ben via cctalk wrote: On 2021-08-25 10:27 a.m., Todd Goodman via cctalk wrote: On 8/25/2021 11:49 AM, ben via cctalk wrote: [..SNIP..] C uses cheap tricks for speed. 8 bit bytes, 32 bit integers, taken from B. I have 21 bit CPU, with 3 7 bit bytes/word. Algol would

Re: Extremely CISC instructions

On 8/25/2021 11:49 AM, ben via cctalk wrote: [..SNIP..] C uses cheap tricks for speed. 8 bit bytes, 32 bit integers, taken from B. I have 21 bit CPU, with 3 7 bit bytes/word. Algol would have a PACK/UPACK function, and be fairly portable. C on the other hand a mess. Ok. I don't have 21 bit

Re: ISO: Stabilization feet for DEC H960 rack

I'd buy at least a couple sets (and likely more) On 2/28/2021 12:28 AM, Steve Malikoff via cctalk wrote: Josh said I realize these are uncommon; curious if anyone has a spare pair somewhere (hey, that rhymes.) I'd like to be able to pull out the CPU on my 11/70 without worrying about the

Re: The best hard drives??

At least you didn't call us all "Merkins"... On 11/17/2020 8:03 PM, Liam Proven via cctalk wrote: On Tue, 17 Nov 2020 at 15:36, Bill Gunshannon via cctalk wrote: Most "Merikens" just let the bank do the conversion when they buy from overseas. Argh! I was not posting to the list that I

Re: Way off topic: posting to the list using default Samsung Android Mail Client

On 11/11/2020 11:23 AM, Ali via cctalk wrote: If you want to write/reply to old-style plain-text email from a fondleslab, then use K9Mail. It is the only mobile client I know of that can handle bottom-posting, trimming quotes etc. Well K9 is getting a number of recs here so I will take a

Re: FS: S-100 stuff, electronic stuff, model railroad stuff, books and magazines!

Hi Rich, I'm very sorry to hear about your health issues. I'm interested in the S-100 stuff if still available (or it falls through again, just let me know) Thank you, Todd On 10/18/2020 10:46 PM, Richard Pope via cctalk wrote: Hello all,     It looks like the S-100 stuff is available

Re: Altair 8800 reproduction

Hi Tom, I finally picked these up from Mike and haven't even had a chance to go through everything yet (due to w*rk). I have the backplanes available, please feel free to contact me privately if you want to. As Greg said, the s100computer google group and s100computers.com are both great

Re: VAX /785 docs

On 6/25/2020 7:36 PM, Al Kossow via cctalk wrote: On 6/12/20 10:45 AM, Al Kossow via cctalk wrote: On 6/12/20 9:46 AM, Noel Chiappa via cctalk wrote: /785 docs are very rare (Bitsvers only has prints) so a VAX person should grab this and then scan them. done.. though I really shouldn't be

Re: Fixing an RK8E ....

I have some of these connectors (from ECS) for $10 each Shipping in the US is a flat rate $8.30 (Poor) pictures at http://bonedaddy.net/tgoodman/photos/tgoodman/ECS-Connector/ Todd On 6/19/2020 5:19 PM, Vincent Slyngstad via cctalk wrote: On 6/19/2020 12:24 PM, Robert Armstrong via cctalk

Re: VAX /785 docs

Hi Al, If you'd like me to reimburse you for this, I'm happy to do so! I have a chassis, board set, power supplies, etc for an 11/785 that I eventually hope to get to and these would be great to have available (online only or both online and in paper form). In any case, let me know how much

Re: LK201 emulation

Hi Paul, I'm interested and would be happy to get a batch of boards done (at least 20 to get the per board price down). They'd be bare boards though so people would have to source their own parts and build them themselves. Thanks, Todd On 5/17/2020 5:13 PM, Paul Koning via cctalk wrote:

Re: Bob Davis and old computer stuff

Hi Chris, I'm sorry, I didn't know Bob and it sounds very tragic. Where is this located? Thanks, Todd On 4/25/2020 6:27 PM, Chris Zach via cctalk wrote: Ok, I've uploaded pictures to https://www.crystel.com/bob/ There are a bunch of 8 inch floppies and old hard disks down there. We have

Re: Two Kaypro 2 Computers, Disks, Documents

Hi Stephen, I'm interested for $250.  I'm in Candia. Thank you! Todd On 2/12/2020 5:37 PM, Stephen Pereira via cctalk wrote: I have two Kaypro 2 computers, some disks and some documents that I’d like to sell. $250 OBO takes the entire lot.. One of the computers worked the last time I set it

Re: Extra copy of "LSI-11, PDP-11/03 User's Manual"

Hi Noel, If you don't get any takers, I'm interested and will happily reimburse you your entire ebay cost (including shipping to you) as well as shipping to me. Thank you! Todd On 5/10/2019 2:23 PM, Noel Chiappa via cctalk wrote: As a result of an inventory error on my part, I wound up

Re: 34 pin Card Edge “Male to Male” Connector

On 11/28/2018 8:01 PM, William Sudbrink via cctalk wrote: I'm not sure you're quite getting it... they say a picture is worth a thousand words: http://wsudbrink.dyndns.org:8080/images/20181128_194316.jpg Assuming I make up some gerbers myself, two questions: 1) how do you specify the

Re: What is windoes doing?

On 11/19/2018 11:34 AM, dwight via cctalk wrote: I have a question. I use the USB port for serial. In my program, I use a fixed com port. When going to the control panel, I find that I see (in use) tags on some of the com ports. I'm the only one currently using the com ports but recently

Re: i860: Re: modern stuff

Yes, a company I was working for OEMed what because IBM's X25Net software and it was ported to their RTIC i960 cards from our own homegrown i960 cards. The IBM group we worked with was in La Gaude France but we heard the RTIC cards were developed in Boca Raton, FL. We ran VxWorks on them.

Re: VT100 emulation

On 9/9/2018 12:34 PM, Al Kossow via cctalk wrote: On 9/9/18 9:30 AM, Al Kossow via cctalk wrote: a 7" android tablet based on the wondermedia wm8650 SOC wow.. dug out my notes and I was looking at doing this six years ago :-(

Re: Happy Armed Forces Day 2018

On 5/20/2018 3:48 PM, Fred Cisin via cctalk wrote: Happy Armed Forces Day 2018 Saturday, May 19 ... Do not forget our brave men and women! On Sun, 20 May 2018, Christian Corti via cctalk wrote: a) This is an international list b) This topic has absolutely nothing to do with classic

Re: DTC 3250

Hi Fred, I could use one. Thanks! Todd ⁣Sent from BlueMail ​ On Mar 26, 2018, 4:36 PM, at 4:36 PM, Fred Cisin via cctalk wrote: >I just stumbled on a DTC3250, & "Installation Guide" >8 bit ISA SCSI + 4 floppy > >Firmware: "GSH53A" > >The floppy interface MIGHT work

Re: AT 3B2 stuff--Calling Seth

If Seth isn't interested, I'm interested in 3B2 stuff (hopefully whole machines). Thank you, Todd On 3/6/2018 5:57 PM, Electronics Plus via cctalk wrote: Was Seth the person looking for this stuff? I finally found it! I sent him an email, but it might not be a current address. Seth, if you

Re: Microfiches on Ebay

Hi Mike, I'm interested though I'm not in the UK.  I'm happy to pay shipping though. I won't be selling them on eBay (or anywhere else) but using them for help working on my DEC collection. Thank you! Todd On 2/12/2018 1:37 PM, Mike Norris via cctalk wrote: Hi Mattis at al, I cannot

Re: Sold on eBay: Convergent Technologies S/50 a.k.a. Unix PC, AT 3B1 Unix Workstation

Hi AJ, Thank you, I've been looking for 3b1s and 3b2s for a while. I plan to eventually be able to image the disks and scan the documentation. It will however take a while to get to that point. I'm open to loaning media and manuals to someone who can get that done quicker (I'm in southern

Re: Sold on eBay: Convergent Technologies S/50 a.k.a. Unix PC, AT 3B1 Unix Workstation

Hi AJ (and list), I got that one. Todd On 1/13/2018 10:02 PM, AJ Palmgren via cctalk wrote: I'm just wondering if anybody here did (or knows who) bought this one. http://ebay.to/2DaRr13 Even though these were all manufactured by Convergent Technologies, this one is actually BRANDED by

Re: FFS: Kennedy 9100 Op/Maint Manual

Hi Jason, I'd like it if still available. Thank you! Todd On 11/25/2017 12:28 PM, Jason T via cctalk wrote: This one is already on Bitsavers but if you'd like a nice original copy with the fold-out schematics and color cover, I'll send it to you for the cost of shipping from 60070. The

Re: PDP-Lifter

Looks great Steve!  Nice writeup as well! Todd On 10/7/2017 1:53 AM, Steve Malikoff via cctalk wrote: After the discussion last year about lifting and racking heavy gear, I bodged together some hardware and came up with the PDP-Lifter. It allows easy movement, lifting and lowering for

Re: Various Software and Documentation for shipping + donations (round 9)

Hi Mark, I'd like these if not already claimed. Thank you! Todd On 09/04/2017 04:34 PM, Tapley, Mark via cctalk wrote: > All, > Windows Utilities and drivers: > > Not cataloged, a box of ~200 assorted 3.5” floppies, most marked “HD” > but some not. All have labels describing

Re: at unix pc

Hi, I like them and have been looking for one for a while to pick up. If you're looking to sell one and accessories then I'd love to purchase! I'm in the US. Thank you! Todd On 8/27/2017 3:29 PM, emanuel stiebler via cctalk wrote: anybody still uses them, collects them? I have to move,

Re: (Mostly Sun) Hardware and Docs in Arlington MA

Hi Phil, I'm interested in all of these (especially the AT "UNIX PC") I live in southern NH so pick up is possible (though timing might be a problem.) Thank you! Todd * Phil Budne via cctalk [170529 18:19]: > The following would like to find new homes: Not ESPECIALLY

Re: Pair of Twiggys

* Fred Cisin via cctalk [170315 14:48]: [..SNIP..] > > Below the user interface, is Android very similar to Linux? [..SNIP..] I'd argue that the OS used by Android *is* Linux (with some small modifications.) Of course the user interface and lots of other functions is a

Re: PDP-11/34 rails?

* Noel Chiappa via cctalk [170304 22:34]: [..SNIP..] > Anyway, I've seen BA11-K boxes with several different kind of mounting > slides. > > The tall, grey-coated ones are made by Chassis Trak, a division of General > Devices of Indianapolis. The 4 I looked at, all idential