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PC-DOS 8.0 was the DOS for Windows ME and was never released as a standalone OS. The last standalone version of PC-DOS was PC-DOS 2000 (PC-DOS 7.0 rev 1) released in 1998. Off Topic: The actual news report posted by the Computer History Museum says the donation included MS-DOS 2.0 along with MS-DOS 1.1 and Word for Windows (1990 version).

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PC DOS Retro: Information for PC-DOS provided by PC-DOS Lead Developer Vernon Brooks RTKernel - Real-Time Multitasking Kernel for DOS (currently shipping commercial product)

WORDPERFECT 5.1 DOS FREE DOWNLOAD CODE

While it does not implement 'threads', this supplementary code that runs under MS-DOS/PC-DOS/DR-DOS 3.0 or higher and on no OS, DOS compatible hardware, does implement multi-tasking including child programs and semaphores It also formed the basis for OS/2 v1.0 (See the PC DOS Retro site for more information) Never released in North America, multi-tasking MS-DOS 4.0/4.1 was released for sale in Europe. While it did not implement threads the original MS-DOS 4.0 was 'Multi-tasking MS-DOS 4.0'. For this reason the best that was done with DOS was the Multi-Tasking MS-DOS 4.0/4.1 (This was not related to PC-DOS 4.x) I386 computers could have used a threaded code capable MS-DOS, but IBM was dictating capabilities and wanted 286 support. In a sense that was part of its success, providing a common ground for all those different PC at the time.ĭOS was a pain, but at the same time, it was a simpler time. It had little extension capabilities, except by using complex hack (hello MS redirector interface) and provided a simple, uniform experience. LOL, you do understand that DOS was a REAL MODE operating system, that has nothing to do with modern CPU capabilities (especially 64bit)?ĭOS was a single threaded (heck I don't think threads were even possible at that time), real mode OS, able to handle at a maximum 1 Megabyte of memory (of which 380KB was dedicated to system ROMs addresses). Imagine if someone recompiled DOS 2.0 as a 64-bit operating system, and added a network read/write capability for. The really early stuff, cylindrical actuarial table calculators, analog computers, and so forth were fascinating. Really, really, fantastic place if you're interested in the history of computing. Among the stuff on display: an original Apple I signed by Woz, the original Google servers from Stanford, part of the Pixar cluster that created Toy Story, a real Enigma machine (one of only a handful viewable in the US), the only functional Babbage Engine (which they occasionally set in motion), and so on.

I was contemplating a move to the Bay Area and visited the museum and was completely blown away. Loved seeing playing the first digital computer game on the PDP-1, and their functioning Babbage difference engine is just plain awesome. It's a really cool place, I was just there two weeks ago, really recommend to any geek living in or visiting the Bay Area.

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