PDP 11/40 for sale, Paris, France
Hi, If you're interested, contact me directly. It was in my apartment for years, I had to move it to the garage, and I don't like the idea of leaving it there for the winter. It's a PDP11/40 in a DEC rack. It was in working condition when I got it, only the memory card had a problem (1 capacitor has been ripped off), but reading/writing from/to the registers was working. No need to say that you have to arrange shipping ! Thanks, -- Stéphane
Identifying LSI Logic IC
Can anyone identify this IC? https://imgur.com/a/CU7Cn8z This is from an Omega VLF receiver. I don't see many custom parts within this unit, but perhaps this is one? Thanks, Kyle
Lecture: The evolution of TECO and EMACS – hands-on demo, 2021-09-11, 19:00
Hi all, you're invited to the Update computer club[0] public lecture series "Updateringar"[1]! When: 2021-09-11, 19:00 CEST Where: https://bbb.cryptoparty.se/b/upd-0mo-m2u-aq8 The evolution of TECO and EMACS – hands-on demo The Emacs text editor has long been an important tool among programmers, and has a long and rich history. I will talk about the development of the TECO and Emacs line of editors throughout history. The emphasis is on practical demonstration of programs found through software archaeology. True to form, the bulk of the presentation will be broadcast using ancient technology. Lars Brinkhoff (ICtech) The lecture is free and open to everyone. Upcoming: 2021-10-09, 19:00: Update Computer Club: History and not-so-certain future. Pontus Pihlgren (Update) Don't want to miss upcoming events? Subscribe to our low-traffic announcement list by sending a mail with the body "subscribe announce" to majord...@update.uu.se! Hope to see you there, Anke [0] https://www.update.uu.se/index_eng.html [1] https://www.update.uu.se/wiki/doku.php/projekt:updateringar
Re: Looking for an IBM 3803
> The large 3 phase input on it 3803 is likely overkill for even a controller > and full string of 8 drives. It's easier to oversize things and have a 3x > safety margin, then deal with running close to the limits and risk any > problems from poorly installed site wiring. It is overkill, but a full string can really punish the circuit breaker with enormous current surges. Better to overdo it with a breaker that can handle the spike of all eight 3420s deciding to do some reversing within a few seconds of each other. Even a simple setup with a 3803 and a single 3420 will create large surges that a household circuit may not like much. -- Will
Re: Looking for an IBM 3803
On Mon, Sep 6, 2021, 06:36 Curious Marc via cctalk wrote: > I got both the 3420s and the 3808 from Sellam. On the restoration docket, > now with a better chance thanks to the ALDs which I recently got from > Gabriel himself. I scanned my 3420 ALDs and gave them to Gabriel in return. > Biggest annoyance, besides humongous size and weight, is the amount of 3 > phase power required. > >From what I remember, the only thing that requires 3 phase in the whole system is the blower motor in the 3420 drives. The rest are powered off of single phase 200-240VAC. The large 3 phase input on it 3803 is likely overkill for even a controller and full string of 8 drives. It's easier to oversize things and have a 3x safety margin, then deal with running close to the limits and risk any problems from poorly installed site wiring. Pat >
RE: Looking for an IBM 3803
I have seen issues with 3803s in an IBM datacentres with flashover on the PSU PCB I believe due to water absorption into the PCB material, which I believe are of the paper type. The flames were impressive, as was the knowledge of curses from my manager. I don't know if this issue is common, but just thought I would mention it in case the devices in question had been stored in damp conditions. I should also point out that at the time I was only a Systems Programmer borrowing the machine.. Dave Wade > -Original Message- > From: cctalk On Behalf Of Curious Marc via > cctalk > Sent: 06 September 2021 11:36 > To: Chuck Guzis ; General Discussion: On-Topic and Off- > Topic Posts > Subject: Re: Looking for an IBM 3803 > > I got both the 3420s and the 3808 from Sellam. On the restoration docket, > now with a better chance thanks to the ALDs which I recently got from > Gabriel himself. I scanned my 3420 ALDs and gave them to Gabriel in return. > Biggest annoyance, besides humongous size and weight, is the amount of 3 > phase power required. > Marc > > > On Sep 5, 2021, at 3:17 PM, Chuck Guzis via cctalk > wrote: > > > > On 9/5/21 2:55 PM, Chuck Guzis via cctalk wrote: > >>> On 9/5/21 1:24 PM, Gabriel Nielson via cctalk wrote: > >>> I was digging through the internet and found a post where a 3803 was > >>> posted for sale, would there happen to still be one > >>> available?Preferably a model 2 Thanks,gcniel...@yahoo.com > >>> > >> > >> Aside from a couple of sales of 3420+3803 drives about 5-6 years ago, > >> about the only current sale is just the panel: > >> > >> > ttps://www.ebay.co.uk/itm/153912466858?hash=item23d5e5ddaa:g:P8QAA > OSw > >> 86ZeqMBo > >> > > > > Edit: For that 5-6 year old combo, the seller was Sellam and his > > asking price was $3K. > > > > --Chuck
Re: Looking for an IBM 3803
I got both the 3420s and the 3808 from Sellam. On the restoration docket, now with a better chance thanks to the ALDs which I recently got from Gabriel himself. I scanned my 3420 ALDs and gave them to Gabriel in return. Biggest annoyance, besides humongous size and weight, is the amount of 3 phase power required. Marc > On Sep 5, 2021, at 3:17 PM, Chuck Guzis via cctalk > wrote: > > On 9/5/21 2:55 PM, Chuck Guzis via cctalk wrote: >>> On 9/5/21 1:24 PM, Gabriel Nielson via cctalk wrote: >>> I was digging through the internet and found a post where a 3803 was posted >>> for sale, would there happen to still be one available?Preferably a model 2 >>> Thanks,gcniel...@yahoo.com >>> >> >> Aside from a couple of sales of 3420+3803 drives about 5-6 years ago, >> about the only current sale is just the panel: >> >> ttps://www.ebay.co.uk/itm/153912466858?hash=item23d5e5ddaa:g:P8QAAOSw86ZeqMBo >> > > Edit: For that 5-6 year old combo, the seller was Sellam and his asking > price was $3K. > > --Chuck
