[cctalk] Re: Ferroresonant transformer mystery

On Wed, 16 Jul 2025, Tom Hunter via cctalk wrote: > Recently I got a nice and complete PDP-8/s from the US. The power supply > uses a ferroresonant transformer which in addition to the standard primary > and secondary windings has a separate 2.3H winding connected in series to a > 2uF 660VAC capac

[cctalk] Re: eBay strikes again!!

On Fri, 20 Jun 2025, Cameron Kaiser via cctalk wrote: > > I'm always puzzled by "local only" offers. It's expected that shipping > > costs get added, but why would a seller make a decision that shipping is > > "too expensive"? Logically the buyer should decide that, and if the > > buyer will

[cctalk] Re: Skype

On Tue, 13 May 2025, Adrian Godwin via cctalk wrote: > I'm not interested in downloading a bunch of closed-source applications so > I always use a browser. [...] Well, this ship has sailed already. Unless you disable Javascript, which in turn makes hardly anything work nowadays, you've already

[cctalk] Re: Skype

On Tue, 13 May 2025, Alessandro Mazzini via cctalk wrote: > If I'm not mistaken, teams runs also from a browser and the OS should > not matter in that case It's a resource hog compared to other platforms, but yes it does work via a browser under Linux. Maciej

[cctalk] Re: Skype

On Tue, 13 May 2025, David Wade via cctalk wrote: > So many won't miss it, but for those of us who used it to call real numbers, > there is nothing comparable to replace it. With the gradual demise of the POTS and mobile/cell handsets switching to VoIP that won't be an issue soon (or rather the

[cctalk] Re: RS232 - parallel modems!?

On Tue, 11 Feb 2025, Christopher Zach via cctalk wrote: > 16450 was the one with buffer issues The 16450 was hardly different from 8250: "The NS 16450 is an improved specification version of the INS8250A Universal Asynchronous Receiver/Transmitter (UART). The improved specifications ensure c

[cctalk] Re: RS232 - parallel modems!?

On Sun, 9 Feb 2025, Paul Koning via cctalk wrote: > > I was about to ask if anyone ever built a "Parallel Modem" - but I searched > > around first, and lo and behold, Microcom did ! (v.fast / v.34 era, c. > > 1996) > > I don't know what "parallel modem" would mean. Can you explain? In the sim

[cctalk] Re: RS232 then and now

On Sun, 2 Feb 2025, Chuck Guzis via cctalk wrote: > > I forgot to mention: MIDI has been another notable example where you want > > to wire a UART to another kind of line driver. I also have a computer > > where one of USARTs is multiplexed (software-configurable) between an > > RS-232 line d

[cctalk] Re: RS232 then and now

On Sun, 2 Feb 2025, Maciej W. Rozycki wrote: > > What I meant is that a lot of modern computer modules come with serial > > ports that are not RS232 but rather using standard logic levels (TTL 0 > > and 5 volts, or perhaps lower voltages such as 0 and 3.3 volts) for > > their signaling. Those

[cctalk] Re: RS232 then and now

On Sat, 1 Feb 2025, Paul Koning wrote: > I don't know if the MAX3222 is older, or just different. The RS232 > standard doesn't apply to those high rates. And I vaguely remember > seeing words that imply the line drivers should have controlled > rise/fall times. So I think the MAX3222 limits

[cctalk] Re: RS232 then and now

On Sat, 1 Feb 2025, Paul Koning wrote: > >> Was that with an actual RS232 port, i.e., a device using RS232 signal > >> levels, or a "TTL" logic level serial port? I'm guessing the latter. > > > > I'm not sure what you mean by 'a "TTL" logic level serial port', please > > elaborate. Do you mea

[cctalk] Re: RS232 then and now

On Sat, 1 Feb 2025, ben via cctalk wrote: > > > I'm happy to see people using the correct shell letter for DSubs around > > > here! Oldschool wisdom. > > > > You kinda have to when you get at things such as DA-3W3. > > I have no idea what that is, but I am sure that has no SUB-MINIATURE price

[cctalk] Re: RS232 then and now

On Sat, 1 Feb 2025, Steve Lewis wrote: > Reading the async-expansion for the IBM 5110, it talks about -25 to +25V > (the original spec of RS232?). On the 1980 Color Computer 1, I noticed it > uses -12V to +12V for its RS232. Later in the 1990s, laptops wanted to > sip less less power, and I thi

[cctalk] Re: RS232 then and now

On Fri, 31 Jan 2025, Warner Losh wrote: > > > Was that with an actual RS232 port, i.e., a device using RS232 signal > > > levels, or a "TTL" logic level serial port? I'm guessing the latter. > > > > I'm not sure what you mean by 'a "TTL" logic level serial port', please > > elaborate. Do you me

[cctalk] Re: RS232 then and now

On Sat, 1 Feb 2025, roger arrick via cctalk wrote: > I'm happy to see people using the correct shell letter for DSubs around > here! Oldschool wisdom. You kinda have to when you get at things such as DA-3W3. Maciej

[cctalk] Re: RS232 then and now

On Fri, 31 Jan 2025, Paul Koning wrote: > > FWIW I was able to get reliable serial communication under Linux of up to > > 3.5Mbps with off-the-shelf proper PCIe UART hardware clocked at 62.5MHz > > despite that line drivers used with said hardware (soldered onboard) were > > spec'd for up to 1M

[cctalk] Re: RS232 then and now

On Fri, 31 Jan 2025, Steve Lewis via cctalk wrote: > So while some protocol gets developed for that system, I experimented with > other actual vintage system trying to "talk to" a modern PC (where "modern > PC" is a 3GHz i7 laptop). For the actual task of transferring files, there > are many othe

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

On Sun, 20 Oct 2024, Steve Lewis via cctalk wrote: > the vicinity of the area at least. On the positive, my thinking is that > since the battery is "inverted" from normal and pointing towards the ground > - if it does leak, it'll just leak into the plastic base of the system. Mind the capillary

[cctalk] Re: Data General MV/8000 emulator announcement

On Mon, 7 Oct 2024, Henry Bent via cctalk wrote: > > FWIW compiling 25 years old a piece of software is even tougher, unless > > you use contemporary tools in a contemporary environment, so while the > > availability of the source code is surely always worth appreciating, the > > challenge to mak

[cctalk] Re: Data General MV/8000 emulator announcement

On Mon, 7 Oct 2024, Harald Arnesen via cctalk wrote: > > > Have you tried to run any libc5-program lately? Or a.out binaries? > > Does WordPerfect 8 (released in 1998) count? > > > > If so, yes, I have: > > > > https://www.theregister.com/2022/07/20/wordperfect_for_unix_for_linux/ > > > > Instr

[cctalk] Re: Data General MV/8000 emulator announcement

On Sat, 5 Oct 2024, Harald Arnesen via cctalk wrote: > > Linux maintains backwards ABI compatibility as far as both the OS kernel > > and the C library is concerned. If something breaks with an upgrade then > > please report a bug rather than complaining on a random mailing list (not > > that I

[cctalk] Re: Data General MV/8000 emulator announcement

On Sat, 5 Oct 2024, Tom Hunter via cctalk wrote: > As the software is binary only it won't be "Forever", but only until the > next major change in Windows or Linux APIs which breaks binary > compatibility. Linux maintains backwards ABI compatibility as far as both the OS kernel and the C libra

[cctalk] Re: request for 5.25 floppies

On Wed, 25 Sep 2024, Maciej W. Rozycki wrote: > As someone else pointed out power can be supplied externally and data can > be wired using an original flat ribbon cable, by using corresponding .1" > pitch PCB pin header and PCB edge IDC connectors originally intended for > the drive at the sam

[cctalk] Re: request for 5.25 floppies

On Tue, 24 Sep 2024, Steve Lewis via cctalk wrote: > For shipping/delivery purposes, I'm in north Texas. When I got these > drives, I then realized I no longer have any 5.25 floppies anymore - and > even if I did, then I'm not quite sure how to get the images on there (did > anyone ever make a "

[cctalk] Re: auction starting in 50 minutes

On Tue, 10 Sep 2024, Paul Koning via cctalk wrote: > > Any special provenance? (Hitler's personal Enigma?, BillG's' Altair?, > > Steve's Apple?) > > Nope. But the Enigma is a four-rotor Navy model, not the more common > 3-rotor one. I didn't know that the Navy had those; I had heard of > 4-

[cctalk] Re: MS-DOS am I the only person who liked the win 3.1 UI?

On Wed, 31 Jul 2024, CAREY SCHUG via cctalk wrote: > this is linux, right? so I could have one be kde, one gnome and maybe a > third xfce? might try playing with it someday, or good if I want to > transition gradually to a different UI, but unless > one of them could be like the win 3.1 UI, n

[cctalk] Re: LCM auction pre-notice

On Sat, 13 Jul 2024, Patrick Finnegan via cctalk wrote: > I'm definitely a bit sad that Purdue's former CDC 6500 (priming that's what > they meant) will probably go to some unknown high dollar bidder. Who'll then convert it or embed in pieces into a furniture set to impress guests, because why

[cctalk] Re: Delay slots, was: Re: Re: early microprocessor limited pipelining [was: Intel 8086 - 46 yrs. ago]

On Thu, 13 Jun 2024, Henry Bent via cctalk wrote: > > I always assumed that was because the latency of multiply, let alone > > divide, was far too many cycles for anyone to plausibly schedule "useful" > > instructions into. Wasn't r4000 divide latency over 60 cycles? Wasn't r4000 > > divide latenc

[cctalk] Re: Delay slots, was: Re: Re: early microprocessor limited pipelining [was: Intel 8086 - 46 yrs. ago]

On Thu, 13 Jun 2024, Jonathan Stone wrote: > > The architecture designers cheated however even in the original ISA in > > that moves from the MD accumulator did interlock.  I guess they figured > > people (either doing it by hand or by writing a compiler) wouldn't get > >that right anyway. ;) > >

[cctalk] Re: early microprocessor limited pipelining [was: Intel 8086 - 46 yrs. ago]

On Thu, 13 Jun 2024, Paul Koning via cctalk wrote: > MIPS, perhaps? It has "delay slots". The one that remains is the > branch delay slots, which in modern designs is presumably merely an > annoying crock that requires extra pain to implement but is actually > required because it changes the

[cctalk] Re: Delay slots, was: Re: Re: early microprocessor limited pipelining [was: Intel 8086 - 46 yrs. ago]

On Thu, 13 Jun 2024, Jonathan Stone via cctalk wrote: > MIPS is of course (allegedly) an acronym for "Microprocessor without > Interlocked Pipeline Stages". > > No interlocking between pipeline stages mean no hardware avoidance > (delays, pipeline bubbles) of hazards. So hardly surprising that

[cctalk] Re: interlace [was: NTSC TV demodulator ]

On Mon, 20 May 2024, Wayne S via cctalk wrote: > The setup on the earlier monitors was sometimes call “ODB” , don‘t know > why. Was equivalent to setup. As a counterexample my first PC monitor had nothing like that. It was a dual-frequency B&W CRT and only had three controls: a power-on swit

[cctalk] Re: PCs in home vs businesses (70s/80s)

On Sat, 25 May 2024, Chuck Guzis via cctalk wrote: > > I think it was indeed the way to tell NEC V20 and other x86 chips apart: > > good if you wanted to make seamless use of the 8080 emulation mode). > > Is this something you've actually verified? Seems to be a bit of an > urban legend. I ca

[cctalk] Re: PCs in home vs businesses (70s/80s)

On Sat, 27 Apr 2024, Fred Cisin via cctalk wrote: > How many know that AAM is a two byte instruction, with te second byte beint > 0Ah? > Changing the second byte to 8 gave division by 8, etc. It's the kind of a question you can't really answer, but the feature has been known since forever. Mys

[cctalk] Re: 50 pins in three rows

On Sat, 12 Aug 2023, Chuck Guzis via cctalk wrote: > > They are: . > > People never give up on these things as this is not the first reference I > > have come across in the recent years about this connector being made new. > > I can't

[cctalk] Re: 50 pins in three rows

On Fri, 11 Aug 2023, Fred Cisin via cctalk wrote: > I just called them D-23, since the shell size didn't seemto have been > named/defined. > > They weren't available when i got my Amiga, either. > But, I guess that there was a period in between when they might have been > available. They are: <

[cctalk] Re: Is this a RIFA (uV3100-10 PSU)?

On Wed, 2 Nov 2022, Peter Coghlan via cctalk wrote: > > Did you have to replace the power LED at all? I've just bench-tested the PSU > > I've swapped the X2 cap in (luckily it powers up without a load, so all I > > did was hook up a DVM and check out the voltages), and I noticed that the > > LED d

[cctalk] Re: DECnet to be dropped from Linux

On Tue, 2 Aug 2022, Wayne S via cctalk wrote: > I naively assume that since Decnet is a mature product supporting it > just means testing it with new versions of Linux so not too much work is > needed. Someone has to do that, it doesn't happen automagically. And if not for: > It has been Orp

[cctalk] Re: Agenda VR3 MIPS cross-gcc

On Sat, 30 Jul 2022, Tomasz Rola via cctalk wrote: > suppose). Is there anything that indexes ftp sites, beyond, hum-hum, > archie? Is there any archie server left? Yep, . Maciej

RE: DEC H7822 power supply

On Thu, 12 May 2022, Peter Coghlan via cctalk wrote: > > Wayne: I just got an Dec AlphaStation 200. Look like its running NT > > though. > > > > It's probably ok but check the power supply for leaky capacitors! Definitely, watch out for possible damage! Prompted I had a peek in mine (an As

Re: DEC H7822 power supply

On Thu, 12 May 2022, Peter Coghlan via cctalk wrote: > I replaced the capacitor in question with a blue Nichicon SE of the same > value scavanged from another H7821 until I order some spares. I now have > 8.7V available on the 9V supply, a little less than I hoped for but it is > enough to make t

Re: DEC H7822 power supply

On Wed, 11 May 2022, Paul Koning wrote: > > I guess especially for standard capacitors factories ordered whatever was > > readily available whereas with the high-ripple low-impedance/ESR parts the > > choice was much more limited. > > I wonder if nowadays a good replacement for the case where l

Re: DEC H7822 power supply

On Thu, 12 May 2022, Peter Coghlan via cctalk wrote: > Anyway, the good news is that I think I have found the source of the > problem. One of the capacitors used to filter the (DC?, pulsed DC?, > rippled DC?, biased AC?) supply to the 9V regulator is marked 330uF/25V. > It reads 6uF on the capaci

Re: DEC H7822 power supply

On Sun, 8 May 2022, Tony Duell wrote: > > In the H7821 it's -9Vdc return pairing with -9Vdc supplied on the yellow > > wire (an isolated circuit). Pin numbers 14 & 13. Try measuring voltage > > across the suspicious connections as any reference to ground may not be > > indicative. > > > > This

Re: DEC H7822 power supply

Hi Peter, > > Right, my notes indicate Nichicon PL parts might be problematic too, e.g. > > one at 4700uF/10V on 5V output of the H7826 PSU. > > > > What is H7826 used in? I don't think I have any of those. DECstation 5000/1xx systems and TURBOchannel Extender boxes. Not sure if anything el

Re: DEC H7822 power supply

Hi Peter, > I still have the leaky electrolytics I removed from the POWER-ONE PSU in my > Cisco IGS a while back. I stored them with their leads up and goo seems to > be still oozing out of some of them despite their inactivity and orientation. > These ones are marked Nichicon PL(M) 4700uF/63V, 2

Re: DEC H7822 power supply

On Tue, 3 May 2022, Peter Coghlan via cctalk wrote: > > Would the system have been possibly stored upside down sometime? > > > > I don't think so. It may have spent some time lying on it's side due to > deteriorating rubber feet and for ease of access and but I can't see any > reason for it ever

Re: DEC H7822 power supply

On Mon, 2 May 2022, Peter Coghlan via cctalk wrote: > Thankfully, it doesn't seem to have been there long and didn't get a chance > to spread around the board. Bizarrely this capacitor has it's legs pointing > upwards and managed to leak while there are similar capacitors on the other > board wit

Re: PCI floppy controller

On Thu, 21 Apr 2022, Chuck Guzis via cctalk wrote: > I suppose it might be possible to fashion a legacy floppy controller on > a PCI card with enough supporting logic to make it compatible with > existing software, but I'm not aware of such an effort. You can of course build a PCI FDD interface

Re: Retro networking / WAN communities

On Mon, 11 Apr 2022, Grant Taylor via cctalk wrote: > > I think "hub" is another word for "repeater" (just like "switch" is another > > word for "bridge"). > > Interesting. > > Do you know of any documentation, preferably not marketing materials, that > used "repeater" in lieu of "hub"? As I r

Re: VAX9000 unearthed

On Fri, 18 Feb 2022, Paul Koning via cctalk wrote: > From what was just reported, the 6000 series indeed did it that way. > But I think on the 9000 it was an I/O bus too. I definitely remember > some work on XMI based I/O devices, in particular an FDDI card. And > indeed you can find a spec

Re: More switchmode power supply grief - Cisco IGS router

On Sun, 6 Feb 2022, Peter Coghlan via cctalk wrote: > > NB Mouser has the MAP80-4000G in stock actually, so if all else fails and > > you are determined to get the IGS running, you can pick a brand new one: > > . > > > > Thanks again Mac

Re: Wanted: Pinout IDT 49C402 PGA84

On Thu, 10 Feb 2022, Holm Tiffe via cctalk wrote: > Has anyone a databook newer than 1989 where the PGA84 Pinout is listed? It seems like datasheetarchive.com has a copy of a 1995 datasheet listing what you need ("IDT49C402/A/B 16-BIT CMOS Microprocessor Slice", IDT doc #9011; original, not a

Re: More switchmode power supply grief - Cisco IGS router

On Sat, 5 Feb 2022, Peter Coghlan via cctalk wrote: > > This PSU seems to have been used across various Cisco devices and I had > > one fail several years ago in a WS-C1202 Ethernet/FDDI switch, also having > > suffered from leaking caps. Back then RS still had it in stock at a hefty > > pric

Re: More switchmode power supply grief - Cisco IGS router

On Thu, 3 Feb 2022, Peter Coghlan via cctalk wrote: > Today I finally managed to check it out. The ceramic F4A mains input fuse > beside the power switch on the back panel had blown. When I opened it up, > I found a POWER-ONE MAP80-4000 power supply. The main chopper transistor > labelled Q1 on

Re: Origin of "partition" in storage devices

On Tue, 1 Feb 2022, Liam Proven via cctalk wrote: > One of our favourite small PC builders, Panrix, questioned this. They > reckoned that having the swap file on the outer, longer tracks of the > drive made it slower, due to slower access times and slower transfer > speeds. They were adamant. Wi

Re: Origin of "partition" in storage devices

On Mon, 31 Jan 2022, Fred Cisin via cctalk wrote: > File sizes were stored as the last 4 bytes of each DIRectory entry, with a > signed 32 bit number. So, a file could be from > -2,147,483,648 to 2,147,483,647 > Unfortunately, they never successfully finished the implementation, so copying > a neg

Re: DEC 3000/600 Alphaserver problems

On Wed, 12 Jan 2022, Jon Elson via cctalk wrote: > > Thanks Jon. > > > > Here is a badly focused picture of the suspect components: > > > > http://www.beyondthepale.ie/cctech/p1010198.jpg > > WOW, I don't know what those are!  They look like big ceramic caps to me, but > if they don't have any

Re: Mounting ULTRIX CDROMs on Linux

On Fri, 21 May 2021, Maciej W. Rozycki wrote: > ISTR upstreaming some fixes to Linux UFS support 20+ years ago to address > this very problem (IIRC OSF/1 or Digital Unix CD-ROMs were also UFS, and I > had a need to access them under Linux for some reason) and with them in > place I thought the

Re: PCIe/PCI I/O access (was: Re: VT340 Emulation)

On Sun, 27 Jun 2021, Kevin Bowling wrote: > Thanks this was interesting learning. You are welcome! NB I think it is also worth noting that the presence of I/O instructions and corresponding bus cycles with x86 is most relevant for PCI as it is only *because* x86, or more importantly the PC/A

PCIe/PCI I/O access (was: Re: VT340 Emulation)

On Sun, 27 Jun 2021, Paul Koning wrote: > > However both serial and parallel ports remain reasonably available as > > PCIe option devices. Though parallel ports seem to be made as legacy PCIe > > devices only, that is accessed with I/O rather than memory read/write bus > > cycles, which are no

Re: VT340 Emulation

On Fri, 25 Jun 2021, Paul Koning via cctalk wrote: > > Well you can find mother boards with real COM port, but they are rare. > > One place you can find them easily is on industrial computers. My > firewall machine is one, because I wanted it to be fanless. It has the > usual pile of USB port

Re: Mounting ULTRIX CDROMs on Linux

On Thu, 20 May 2021, Christian Groessler via cctalk wrote: > IIRC I had burned the Ultrix CD "normally" (means without fiddling with block > size, so not 512), but changed the block size to 512 for booting it. IIRC #2, > burning was done on another drive, not the Plextor. CD-ROM medium format ha

Re: Melted computer feet

On Wed, 19 May 2021, Zane Healy via cctalk wrote: > I’m trying to determine if I can revive the VAXstation 4000/90 I > received from a list member, back around 1998 (it’s never worked). > When I pulled it out, I discovered that its feet have melted, and I’m > assuming probably made a mess on t

Re: That VAXStation4000vlc 3W3 video connector

On Tue, 4 May 2021, Jonathan Stone via cctech wrote: > You need a video cable with a 3W3 connector on one end. Original was likely > a DEC BC29G-10. > That, plus 5BNC-to-VGA cables, and 3 F/F BNC barrels, will work with a > multisync monitor that handles sync-on-green. > > I just went through

Re: OT: Newsreader for Windows

On Thu, 1 Apr 2021, Grant Taylor via cctalk wrote: > There is probably also the option of using the TUI news readers in / via > Windows Services for Linux (?is that the proper name for /today/?). I have never used that port myself, but there's PC-Alpine worth considering, which I believe uses n

RE: VAXstation 2000 network & hardware guides (English & German)

On Sat, 20 Mar 2021, Dave Wade G4UGM via cctalk wrote: > These arrived this morning and they are scanned and OCR'd here:- > > https://1drv.ms/u/s!Ag4BJfE5B3onlY9td7hHhHPnUKV2bA?e=hDKwES > > I think I can scan at lower resolution and/or grey scale as these are a > bit on the huge side Stor

Re: 80286 Protected Mode Test

On Sun, 14 Mar 2021, Liam Proven via cctalk wrote: > > I should also note, that the other way to get back to real mode from > > protected mode is via a triple-fault. What gets me (and I railed on > > Intel when I worked there for a time) that it still existing in the > > architecture even though

Re: 80286 Protected Mode Test

On Sun, 7 Mar 2021, Noel Chiappa via cctalk wrote: > > The 286 can exit protected mode with the LOADALL instruction. > > Really? So why all the hullabaloo about Triple Faults: > > http://www.rcollins.org/Productivity/TripleFault.html > > back in the day; and why did IBM set up the keyboar

Re: Intel Developers' Insight CD-ROM collection archived anywhere?

On Thu, 1 Oct 2020, Glen Slick via cctalk wrote: > > Sadly neither seems to be among the files I have copied. I could yet > > check Intel Dec 1995 Data on Demand discs I happen to have, and do have > > here, but they are cumbersome to handle as they use a proprietary format > > requiring a DOS a

Re: Atari ST diskettes

On Wed, 2 Dec 2020, Liam Proven via cctalk wrote: > If you don't get much response here, for many of whom I suspect the ST > is a bit modern, let me know and I can share it on some relevant > groups on FB for you. Anonymised or obscured as you prefer. Well, I guess for some anything that does no

Re: The best hard drives??

On Fri, 20 Nov 2020, Peter Corlett via cctalk wrote: > That same $100 widget imported into the UK becomes $120 due to the 20% VAT > rate, which comes to £90, but the UK has its own self-inflicted problems which > cause importers loads of extra costs and £100 is easily believable. Don't forget a

Re: WTB: AUI cables

On Tue, 17 Nov 2020, Grant Taylor via cctalk wrote: > > Those seem rather high priced to me. > > Ya. They are actually (just barely) higher than I can find them on eBay > ($20). > > Maybe I'm being a cheapskate. I like the $5 price a lot better. I think > that's much closer to what I paid at

Re: WTB: AUI cables

On Tue, 17 Nov 2020, Paul Koning via cctalk wrote: > One is from Black Box, at an insane price, with actual AUI style (slide > lock) connectors. > > There are several others that are much less expensive, with regular > screw lock DA-15 connectors. And of course cables with those connectors >

Re: FYI sunhelp.org down

On Wed, 14 Oct 2020, Grant Taylor via cctalk wrote: > > I suppose the list server relies on the same nameservers in a way that > > prevents e-mail distribution from happening. > > I don't think so. At least I thought that the hot wiring that I did to my > mail server only effected /sending/ of e

Re: non-shunting jumpers?

On Thu, 22 Oct 2020, Wayne S wrote: > I’ve just stripped off a short piece of insulation from hookup wire and > slipped it over the pin.Fits tight and can be removed and it's cheap. I guess it's as cheap as you can get. :) Maciej

Re: non-shunting jumpers?

On Thu, 22 Oct 2020, Chuck Guzis via cctalk wrote: > > A variation on the connector idea: use an insulation-displacement type > > connector (the kind that you mount onto a flat cable assembly) without > > the cable. Just snap on the cover over the i-d pins and you have a > > fully insulated as

Re: FYI sunhelp.org down

On Wed, 14 Oct 2020, Grant Taylor via cctalk wrote: > > I posted to and saw my message got stuck in the mail > > queue. > > When did you send your message? I'm trying to judge when the problem started. Last Mon, Oct 12th. The last message I received from the mailing list was on Oct 1st. WH

Re: FYI sunhelp.org down

On Wed, 14 Oct 2020, Diane Bruce wrote: > He was an old friend of mine he died August 15 2019 of cancer. :-( > https://www.gray329.org/bro-william-c-bradford-1974-2019/ So sorry to hear that. :( Maciej

FYI sunhelp.org down

Hi, I posted to and saw my message got stuck in the mail queue. Upon a further inspection I saw that the domain has expired along with `mrbill.net' where the nameservers used to reside and both have been taken by someone else, taking the name service down for `sunhelp.org'. I can still rea

Re: Remote job submission from PDP-11

On Wed, 7 Oct 2020, Al Kossow via cctalk wrote: > > Synchronous serial lines are not typically a feature in the sort of > > machines people are likely to be running something like Simh on, > > especially laptops. I'm sure there were Sync serial cards for ISA but > > probably not anything more rec

Re: Intel Developers' Insight CD-ROM collection archived anywhere?

On Thu, 1 Oct 2020, Maciej W. Rozycki wrote: > > As one example of something that I was recently unable to find online > > anywhere is a copy of either of these, which might have been available > > on some of the Intel Developers' Insight CD-ROMs: > > 297372 16-Mbit Flash Product Family User’s Man

Re: Intel Developers' Insight CD-ROM collection archived anywhere?

On Wed, 30 Sep 2020, Glen Slick via cctalk wrote: > Does anyone have a collection of Intel Developers' Insight CD-ROMs in > physical form or as images? The only physical CD-ROMs I have are a two > disk set from February 1998. I don't know what time period these were > available. Maybe mid or late

Re: Sun SPARCstation LX boot from CDROM?

On Tue, 1 Sep 2020, Liam Proven via cctalk wrote: > This and the rest of what you describe sounds quite like the damaged > caused by electrolyte leaking from failed capacitors. This is probably > the most common cause of failure in electronics after they get to 2-3 > decades old. > > There was on

Re: About to dump a bunch of Compaq SCSI disk caddies (and disks)

On Wed, 8 Jul 2020, Peter Corlett via cctalk wrote: > > If I needed one of those drives, I'd be willing to pay $1 / GB plus shipping > > and handling if they were known to be good. (If I needed them) I would buy > > them sight unseen if you ran SpinRite level 2 on the drives and said they > > pass

RE: IDE-SD adapter question

Eugene, > Jonas, I am using an SD card, not CF because I need to move files from a > laptop to this computer using the SD. Having said that, I suspect > everything you said is still true. I don't have access to any linux. But > do you think I could make a 300MB partition (for example) on the SD

RE: IDE-SD adapter question

On Sat, 27 Jun 2020, W2HX via cctech wrote: > Peter and Maciej. Thank you very much for the input. I don't believe > this BIOS supports anything other than CHS. At least I don't see a way > to toggle between CHS and LBA. Is this what I should be looking for? An > option to enable LBA mode? II

Re: IDE-SD adapter question

On Fri, 26 Jun 2020, W2HX via cctech wrote: > Thanks for previous help on this project. I am working on an old 486 > computer and I have replaced a 40 pin IDE hard drive with this SD > adapter... > https://www.amazon.com/gp/product/B07G29TZPS/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 Th

RE: IDE-SD adapter question

On Sat, 27 Jun 2020, W2HX via cctech wrote: > Could it be related to the fact that it is a 2GB SD card and I believe > IDE controllers of that day could only address something like 500MB? Except for a few sophisticated caching host bus adapters and ATA RAID controllers that presented their own

Re: Future of cctalk/cctech (comment on address fields) , capturing Discord server traffi

On Thu, 25 Jun 2020, jim stephens via cctalk wrote: > I have an observation for when the list migrates.  The current message "From" > field contains the name of the original sender but with the encoded address of > the list as the email address > > For example this has > > Al Kossow via cctalk

Re: Future of cctalk/cctech

On Fri, 19 Jun 2020, Patrick Finnegan via cctalk wrote: > > Sure, there's always `uuencode' when you do need to post that non-text > > piece (which I guess will keep the eyes of Luddites away from it too). > > > > Or an http, https, ftp, or gopher url to somewhere else hosting the image. Well,

Re: Future of cctalk/cctech

On Fri, 19 Jun 2020, Peter Corlett via cctalk wrote: > > It's time to adopt a platform that can handle modern mail. Some may still > > choose a degraded experience, but everyone is entitled to their own fetish. > > Any old mail client can read "modern mail": MIME is designed to be > backwards-com

Re: Synchronous serial Re: E-Mail Formats RE: Future of cctalk/cctech

On Thu, 18 Jun 2020, Peter Coghlan via cctalk wrote: > However, Peter uses PMDF MAIL to post to the list because it has been > pointed out to him that VMS MAIL doesn't do References: and In-Reply-To: > headers correctly. On that note, has anyone heard from Mouse? I haven't > seen anything posted

Re: Amiga Vendors?

On Thu, 18 Jun 2020, Peter Corlett via cctalk wrote: > DB-23 to SCART cables were (and still are) readily-available from anywhere > that > has anything to do with the Amiga. Sometimes they had sawn-down DB-25 plugs > since DB-23 wasn't exactly a common connector even in the Amiga's heyday. Unsu

Re: Microsoft open sources GWBASIC

On Thu, 11 Jun 2020, Maciej W. Rozycki wrote: > GCC supports legacy Fortran code, so I have filed PR fortran/95631 to > track this bug, at: . > Let's see what emerges. So the response from GCC Fortran experts is as follows: "[...] Yes, old

Re: Microsoft open sources GWBASIC

On Sun, 31 May 2020, Eric Korpela via cctalk wrote: > C > C CHANGE THE VALUE OF 4 > C > > CALL INC(4) > WRITE (*, 30) 4 > 30FORMAT ('2+2=',I4) > END > > SUBROUTINE INC(I) > I = I + 1 > END > > OUTPUT > 2+2= 5 Hmm, as a matter of interest

Re: PDP-8/A transformer hum

On Tue, 9 Jun 2020, Bill Gunshannon via cctalk wrote: > > For the VXT-2000 with an H7109-B the rated voltage and current values > > are printed right on the power supply label: > > > > +5.1V, 7.81A > > +12.1V, 0.62A > > -12.1V, 0.46A > > -9V, 0.2A > > > > Fixed width character pinout diagram: >

Re: 2.11bsd unix resolver

On Thu, 21 May 2020, Richard Sheppard via cctalk wrote: > On Solaris it’s the “hosts” line in the /etc/nsswitch.conf/ file. Having /etc/nsswitch.conf was actually Solaris's invention and Solaris itself came from System V rather than BSD. It was only adopted by the freely available *BSD syste

Re: LK201 emulation

On Sun, 17 May 2020, emanuel stiebler via cctalk wrote: > Actually, would even like the other way around too, connecting a working > lk201 to a pc ... ( so the terminal emulation works nicer) Well, you just need a serial port adapter + power. See also:

RE: Replacing Power LED on MicroVAX 3100/95 Power Supply

On Wed, 13 May 2020, Rob Jarratt wrote: > That's fantastic Maciej! I often buy from Farnell, so there is no issue with > getting those parts myself. When I have accumulated enough wants to warrant > an order I will get them. You are welcome, I'm glad to be of help! Maciej

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