Awesome! I've been gifted & randomly ditched or left behind 1 - Original Working 5150 & 1 - 5120...? It had a Full Height 30Meg Hdd. 1 in High-school would boot MS-Dos 3.3 & Play games on Floppy(Mid-90's), 2nd when working in Nashville in IT, Someone brought me the 5120 asking if I could Upgrade it to play Games LOL, I gave him a Working PIII as a trade w/ Win 2k, but I abruptly moved back to MI and left it packed in the attic for someone hopefully to find.....

CP/M-86 evolved into Concurrent DOS, which could run both CP/M and DOS application, and read both CP/M and DOS disks. I have worked with quite some time with Concurrent DOS 386. It was a real multitasking and multi-user OS, using the virtual 8086 mode of the 80386 CPU. However, when GUIs became mainstream, Windows became the preferred option and a command line OS like Concurrent DOS went out of fashion. Real/32 is the final descendant of Concurrent DOS, and CP/M. en.wikipedia.org/wiki/Multiuser_DOS

Really enjoyed your video. You might be interested to know that in the UK we had a computer company called ICL and they released a series of PC's which used CPM86 and the updated CCPM 86 (which allowed 4 concurrent sessions on the console), we had IBM 5150's as well and i always preferred CPM.

@THEPHINTAGECOLLECTOR

Жыл бұрын

@Tim Wilcox Thanks for the heads-up. Always interested to learn on new facts. Is it this company here, en.wikipedia.org/wiki/International_Computers_Limited?

@timwilcox5158

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@@THEPHINTAGECOLLECTOR yes, i used to manage a computer department running ICL mini computers.

5150 running CP/M was my first computer :) (Don't much love the Model F keyboard, though >_>)

Brian Lunduke recently did an article on the beginnings of does, which leaves off where most others begin. Without saying so, it also clarifies why CP/M and MS-DOS v1 were "compatible". And if you know MSX, you totally understand MSX-DOS 1 and why it too is near 100% CP/M compatible - Around age 17 I hired a 286 to design a circuit board, but mostly so I could try out a boxed copy of Concurrent CP/M and Concurrent DOS (think this needed a 386) - And FWIW I had a job where we had a (#5 or #15) IBM-XT in the corner, dragged it out when we needed to resurrect certain RLL drives in the mid to late 90's

Nice content as always

Just curious, what’s the vintage looking green equipment on the wall next to the desk with all the Macintosh machines on it?

@THEPHINTAGECOLLECTOR

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That‘s the air circulation. I built my museum into a former bomb shelter. Basically all buildings in Switzerland built prior to 1990 had to have a shelter.

@JohnKiniston

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@@THEPHINTAGECOLLECTOR very cool, I lived in a rental that was partially a converted fall out shelter, my bedroom was far underground and pitch black inside at high noon.

CP/M-86 was priced crazily way too expensive relative to MS-DOS, so there is a significant degree to which Digital Research shot it's own foot

@THEPHINTAGECOLLECTOR

Жыл бұрын

@TheSulross Indeed. Though now that you say it, I realize I statet the wrong prices. IBM DOS cost 40 $, and CP/M-86 240 $. Though, still a huge price different, and indeed DR making their product rather unattractive from a price perspective.

@paulwratt

Жыл бұрын

Meh, the real problem was Business could get MS-DOS/PC-DOS for the same price as home users (80 bucks instead of 200, according to video), but more down to the fact DOS had been available at release time and about a year before they finished CP/M 86 (IBM-XT release?) - you have to remember how expensive "business" software was back then.(check the mail order listings in Byte Magazine from the Release month of 5150)

Honestly, the hardware and media are sooooo old that it’s just a game to try and use old hard disks and floppy disks.

@paulwratt

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Its not as bad as you think, it comes down to storage, and how hard they were used when new. I have seen someone who was lucky enough to have 2x the same HD make a working one, and another guy a few decades ago transfered a spindal platter set into a new / different housing with new / working heads, just to save the data on it ..

@johnjoyce

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@@paulwratt add in materials that age. Plastics especially.

@paulwratt

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@@johnjoyce that comes down to the era of "what is retro", in that the really old stuff (50's, 60's, really early 70's) is often more durable than the slightly newer stuff (70's, upto mid 80's), and often the quality (or lack there of) depends on who manufactured what, and the quality of the process that was used. I'm thinking of the CDC mini computer example (eg the 8" drives) being worked on by Usagi Electric from the 60's and 70's, as opposed to say many of the SIMM sockets on mid 80's to mid 90's (with plastic locks)

@paulwratt

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I once spend 4 days trying to figure out why CD's burned and verified at time of write were failing 2 hours later in a different system. It turned out I was placing them face down (burn layer up) on the front seat of my car on the way home, and the 40 minutes of Summer Sun in Africa was enough destroy them.

@paulwratt

Жыл бұрын

Back when I used to collect Atari 8bit stuff from garage sales, sometimes I would get 5.25" floppies with _mold_ on the disk. What I often found though, was it was just on the part of the disk where the disk head would (the access hole), and was able to "resurrect" a couple by transferring them to a new jacket, and (cant remember how) cleaning them in the move process (I can remember that you cant touch the media with your hands, the grease / sweat from you finger is not good for the media or heads).