Vintage computer enthusiasts might want to keep track of where to find
CRT-based analog oscilloscopes, for use as output devices.
The early MIT and Lincoln Labs computers used D/A converters to steer
and activate the beam on analog scopes to draw vector images.
Working on Whirlwind simulation, we've been able to get this technique
to work with "real" oscilloscopes, e.g., Tek 475, but we have not yet
found a single DSO that has X/Y _and_ Z inputs (let alone the required
phosphor fade).
Myself, I have a couple scopes with backups, so I'm not in the market
for another one. But others might consider the option...
/guy fedorkow
Date: Mon, 01 Apr 2024 22:33:38 +0000
From: Just Kant<kantexplain(a)protonmail.com>
Subject: [cctalk] oscilloscopes
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
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I have more then I need. All the working ones are HP w/color crts, and as far as older, verifiably vintage tools (right down to the 680x0 processor in either) I have to admit I favor them as a brand. Call we an oddball, weird egg, badges I wear with pride.
But who could resist the allure of the newer ultra portable, even handheld units (some with bandwidth or sampling rates to 50mhz). I'm a big cheapo. But there's no real reason to agonize over a 65 - 200$ or thereabouts acquisition. It's a bit tiring to wade through the piles of availability. I favor a desktop unit, larger screen (but not always, careful). But most of those need wall current I think? The convenience of a handheld battery powered unit obviously has it's benefits.
I will always love and dote upon my color crt based HPs. But the damned things are so heavy, so unwieldy. Judy-Jude knocked my 54111d over, hit the paved floor, shook the house. And still works! Built to withstand an atomic bombardment.
Ifo you absolutely must run something old, yet don't want to deal with the complexities of modern emulation:
https://www.ebay.com/itm/191322319264
- drivers, whatever is needed, likely to be included on floppy. Ask seller. Not sure what tbe form factor it is. Who cares, nail it to a board or the wall.
https://www.ebay.com/itm/283869740055
- obviously a lot faster. 2nd cpu isn't necessary or necessarily beneficial, but it is mandatory (says me, don't be a plebe). Unlike the Intel S5000 series serverboards, this bad boy has a FLOPPY connector. Should boot dos. But I haven't owned 1 yet. Can't remember if I even tried to boot my s5000vsadimmr4 or whatever I had from a dos loaded boot cd. Just can't. But my board did boot Windows 2000. Not too shabby. No drivers or i/o plate with this though. Drivers for Win2k are on tne net. I even foumd a manual I think. Check with me if you have need. The Intel boards have support for Win2008. NOT this board afaik. If that matters to you.
Serverboards of this gen/chipset
have steemy hot ram. You can nail this
to the wall also. But have a desk fan to
keep it all cool.
Hi there,
I need a power supply for my PDP8F computer.
It is missing.
The PDP8F 19" chassis box came in 3 different depths,
600 mm (PSU front to back)
370 mm (PSU across the back)
300 mm (PSU front to back)
I need the shallow one, the 300 mm PSU front to back.
Do you have one available, or know where I can get one please.
Even if it is dead!
regards
ray
I'm looking for an HP 9000 Visualize workstation, like a B160L or B180L+.
I'll be attending VCF East in a few weeks so might find one there.
Has anyone used Cypress technology out of Clearwater, FL? It seems they provide a nice, fully configured to spec turnkey solution, but there's no doubt they charge for it.
http://www.cypress-tech.com/
Any better HP-specific forums or references would be appreciated!
Thanks
I have more then I need. All the working ones are HP w/color crts, and as far as older, verifiably vintage tools (right down to the 680x0 processor in either) I have to admit I favor them as a brand. Call we an oddball, weird egg, badges I wear with pride.
But who could resist the allure of the newer ultra portable, even handheld units (some with bandwidth or sampling rates to 50mhz). I'm a big cheapo. But there's no real reason to agonize over a 65 - 200$ or thereabouts acquisition. It's a bit tiring to wade through the piles of availability. I favor a desktop unit, larger screen (but not always, careful). But most of those need wall current I think? The convenience of a handheld battery powered unit obviously has it's benefits.
I will always love and dote upon my color crt based HPs. But the damned things are so heavy, so unwieldy. Judy-Jude knocked my 54111d over, hit the paved floor, shook the house. And still works! Built to withstand an atomic bombardment.
I’ve read with great interest, over the past short while, a few interesting
articles on the history of the Intel 8008(officially released in April
1972) as it was the forerunner of what was to become the personal computer
industry. And done with less than 4000 transistors. I saw one at a computer
shop/store in Toronto in the latter 1970s’ but had no idea the seminal role
it was to play in microcomputer history.
Happy computing!
Murray 🙂
I know this is a real long shot but is there any chance someone
has a copy of the original distribution of the Amoeba OS from
the University in the Netherlands? Searching the web finds only
the current version which runs on X86. I am looking for the
original which also ran on Sparc and (of the most interest to
me) the VAX.
Remember when they said now that we had the web nothing would
ever be lost again? :-(
bill
Clearly all or virtually all chineseum, correct?
That being the case, um, what type.of.quality can be expected? Some are fairly cheap. I guess thenworld isn't to be expected.
MTM Scientific (Clinton, MI) offered modern redrawn IBM PC 5150 base board
and a Full Kit, at one time.
https://www.mtmscientific.com/pc-retro.html
While he is no longer selling separate blank 5150 boards,
you could inquire about Gerbers.
greg
w9gb
Just out of curiosity, what are you using this board for? The IBM 5150
uses at least three different mother boards, 16K, 256k, and I *think*
512K soldered in RAM. Each is expandable to 640K with 3rd sourced RAM
boards.
I should have (somewhere) at least one of each. I also have several 5150
complete units including keyboard (not so sure about the monitors.)
Marvin
> Message: 3
> Date: Fri, 29 Mar 2024 20:04:52 +0000
> From: Just Kant <kantexplain(a)protonmail.com>
> Subject: [cctalk] Re: need a 5150 motherboard
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk(a)classiccmp.org>
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>
> If you're willing to ship, I'll offer 30$ total. But it has to be IBM.
>
> Sent with Proton Mail secure email.
>
> I have one at Kennett Classic for sale, I think it's $20. I believe it's
> an original IBM, but it may be a close clone. Untested.
> b
>
