Al Kossow wrote:
> Wonder who else?
>
> probably lots..
>
I'm K0VJ and have lurked on classiccmp for many years. My ham interests run
mostly to QRP CW, building compact homebrew CW rigs, and restoring classic
tube gear. Got my first license (N2EBX) back in early 1983 when the exams
were still being given by the FCC. I've seen a lot of changes, had a lot of
fun, and am currently not-so-patiently waiting for the sunspots to come back!
When I acquired my PDP-11/34, I also received a Centronics 503 printer, along with an entire case of ribbons for said printer. They have a part number of 63002293-5001. It's a black nylon ribbon on two spools. These are NOS. I haven't been able to identify anything that uses them - and I mean anything, because I can't find anything on the Web about the Centronics 503, either.
Does anyone have any leads on this? I'd like to find that these ribbons are worth something to someone, because I'll never use more than a few in my lifetime but I don't want to just trash them. Thanks -- Ian
>At 10:24 PM 1/16/2009 -0500, you wrote:
>>On Friday 16 January 2009, Al Kossow wrote:
>> > > Wonder who else?
>> >
>> > probably lots..
>> >
Nico in Denmark, licensed since 1972 or so.
OZ 1 BMC
-- steve stutman <steve at radiorobots.com> wrote:
Paxton Hoag wrote:
> On Fri, Jan 16, 2009 at 6:44 PM, Al Kossow <aek at bitsavers.org> wrote:
>
>>> Wonder who else?
>>>
>
> KE7ZFG - New ham, January 6, 2009. I should have done this 40 years
> ago when I had much more time for radio.
>
> Paxton
>
>
>KL7JT
>
>Did it 42 years ago, when I did have time for radio. hihi
KH6JJN since 1977.
And I *proudly* retain the only callsign I've ever held,
issued in my home state of Hawaii.
There are so many things in our world that change, there
should be at least a *few* things that stay the same.
73's--
Jeff
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>
>Subject: Hams (was Re: thinking of selling my PDP-11/23+)
> From: "Ethan Dicks" <ethan.dicks at gmail.com>
> Date: Sat, 17 Jan 2009 00:15:05 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>On Fri, Jan 16, 2009 at 9:25 PM, Gordon JC Pearce MM3YEQ
><gordonjcp at gjcp.net> wrote:
>> On Fri, 2009-01-16 at 15:04 -0200, Alexandre Souza wrote:
>>
>>> Pu1BZZ Alexandre :)
>>
>> Wait, wait, you're another radio amateur? Not surprised there's a
>> crossover with classic computing. Wonder who else?
>
>N8TVD
>
>Technician _with_ code (not that it matters anymore)
>
>-ethan
We are everywhere...
KB1GMX Extra I like my old tech call.
Allison
> > Wonder who else?
>
> probably lots..
>
> Eric Smith just got his licence.
> I know Don North is, as am I (wb9ggj)
I'm former N1QCO, Presently KB1Qff (that needs to change,
I'll be using the vanity call program).
I spent a lot of time and money to get on HF this time
around and was sorely disappointed to find it a lot like CB
radio. And it's not the nubies making it a chore to listen.
> Here are some pics of a Novell file server circa 1987.
> http://bitsavers.org/pdf/novell/68k_file_server
>
> Was wondering if anyone had documentation or software for
> this. I had some of the external dual drive scsi boxes for
> these at one point.
This reminds me of a similar oddity I used to support years
ago. 3Com made a server, and an OS called 3+ Open. As I
recall, it was an OS/2 - LAN Manager derivative.
> There seems to be a recent trend on ebay for places that collect
> electronics for recycling to have someone who picks out the "old" items
> for sale on ebay.
They have been cherry picking the incoming stuff for years. The big one around
here is Computer Recycling Center, next to Weird Stuff (who is in the same biz).
Most modern PC stuff they get goes to schools, they eBay the stuff they can get
money from, and put the dregs up for sale on Saturday mornings. Feeding frenzy
at 9:00 AM when they open. I wander by every once and a while to pick up cheap
PCI cards, or the odd bit of old software no one else wants.
Most of the store front junk stores around here disappeared as manufacturing left
the valley, and the bottom feeders from bankruptcies go directly to eBay now with
no retail presence.
>
>Subject: DC319 DLARTs and T11s (was T-11 ....)
> From: "Bob Armstrong" <bob at jfcl.com>
> Date: Fri, 16 Jan 2009 07:25:17 -0800
> To: <cctalk at classiccmp.org>
>
>>A while ago, Choctaw Bob ]bob099 at centurytel.net] wrote:
>>
>> [Schematic of Peter McCollum's hand built T11 SBC]
>> Schematic here http://www.geocities.com/saipan59/dec/t11.jpg
>
> I just got around to looking at this (sorry - been busy :-) and while it's
>nice and simple, it uses a 6850 UART for the console. It's easy enough to
>interface the 6850 (or any other modern UART for that matter) to the T11
>bus, but it's not going to be even remotely PDP-11 compatible. If you want
>to have any hope of ever running any real PDP-11 software, you're going to
>need a DL11/KL11 compatible console interface.
DLARTs are hard o find. I have a dozen t11s and one DLART.
> For the T11 that means you also want a DC319AA DLART (a "DL-11 compatible
>UART chip") chip, and after looking around those seem to be far more
>difficult to come by than the DCT11 CPU chips. Does anybody have a pile of
>DC319 chips handy, or know where they can be found? Unlike the T11 chips,
>which can be harvested from a lot of fairly common and not very valuable DEC
>boards (e.g. RQDX3s), I don't know of any good donor for DLARTs. There are
>a couple on my FALCON SBC-11/21 board, but I'm hardly willing to take it
>apart for this project :-)
Actually a 6402 (two or three are better) and the logic to do a ful DL isn't bad.
With at least two then you can do a Tu58/TU58sim as a disk and have a real
bootable 11.
You also want at least 28KW of ram (2 32kx8 rams will do it) and TUboot in a
small eprom mapped at boot.
> If you can't find a DC319, then the alternative is to build a DL11
>compatible interface using a standard UART like the 6402 and a handful of
>discrete logic. I think the minimum you could get away with would be to
>implement the DONE and INTERRUPT ENABLE bits (bits 6 and 7) for both the
>receiver and transmitter CSR, and then to implement the standard vectors at
>60/64. Oh, and of course the data registers for the transmitter and
>receiver.
>
> The KL11 also implements a MAINTENANCE bit, a BUSY bit, and a READER
>ENABLE bit, but a) we have no reader, b) I doubt (I'm hoping) much software
>ever looks at the BUSY bit, and c) probably nothing uses the MAINTENANCE bit
>except the diagnostics.
Try to find the logic for DLV11J as that has basic serial. You do not need
all the bits but most are handy and you also need to generate a valid vector
for console (60Q) and also for any other port.
> ISTR that DEC had an "official" standard written down for exactly what was
>required of a DL-11 compatible serial interface, but I can't find it
>anywhere.
Microcomputer handbook. I'll try to find something more.
Allison
>Bob
>
Yes, you read that correctly.
I have in my possession a TK-50 tape for the PDP-11 system which contains none other than
OS/2 operating system.
Many people have claimed this never existed. But I have the tape!
I had done a directory dump of it and can supply it.
One other person who's checked the directory listing has said it is authentic.
I'm not sure what to do with it, and I believe IBM made OS/2 open source, so technically it should be "free"
of it's chains
maybe someone can turn it into something useful, or just run it and have the most unique PDP on the planet, I don't know... whatever :)
anyhow, it's a really weird bit of computing history, and I'd hate for it to be lost. it should be in a museum :)
Dan.
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