Microsoft's MS-DOS is 30 today
Kudos to QDOS
MS-DOS is 30 years old today. Well, kind of. On 27 July 1981, Microsoft gave the name MS-DOS to the disk operating system it acquired on that day from Seattle Computer Products (SCP), a hardware company owned and run by a fellow called Rod Brock.
SCP developed what it at various times called QDOS and 86-DOS to run on a CPU card it had built based on Intel's 8086 processor.
Command line: MS-DOS 1.19 still running after all these years
The company had planned to use Digital Research's CP/M-86 operating system, then still in development. But, having released the card in November 1979 - it shipped with an 8086-compatible version Microsoft's Basic language interpreter-cum-operating system - and reached April 1980 without CP/M-86 becoming available to bundle, SCP decided it had to create its own OS for the card.
Enter, in August 1980, QDOS. It really did stand for Quick and Dirty Operating System. That's actually what it was: a basic but serviceable OS good for coding and running programs written in 8086 assembly language - the x86 instruction set. It was written by SCP's Tim Paterson, who had joined the company as a programmer a couple of years previously and began work on it in April 1980.
On the cards: Seattle Computer Products advertises its wares
Some observers later claimed that QDOS too closely resembled CP/M for comfort. Paterson himself would later say that QDOS' design criteria specifically included the abililty to support programs written for CP/M and compiled for the 8086. That's not at all surprising given that SCP undoubtedly saw QDOS as a temporary stand in until Digital Research (DR) shipped CP/M-86.
The picture we have today is muddied by the claims that IBM originally wanted to use CP/M-86 in its first personal computer. IBM and DR famously failed to come to terms that would allow CP/M-86 to be bundled with the PC, and IBM turned to Microsoft for an alternative. Digital Research founder Gary Kildall, who died in 1994, would later allege that Microsoft's product was a rip off, fuelling plagiarism claims that Paterson has always denied - he reverse engineered it.
The competition: CP/M-86 in action
Update My fellow Reg hack Andrew Orlowski points out that, no matter what Paterson says, the US court ruled against the programmer in a defamation lawsuit he brought against publisher Little Brown for claiming the origins of QDOS were not clear-cut.
Back in 1980, Paterson continued to evolve QDOS through the year, the OS being renamed 86-DOS - it was now evidently no longer viewed as a rough-and-ready stand-in - between September and December 1980. Accounts differ as to when the name - and the OS' status - was switched, but December is the date Paterson himself gave during a Softtalk interview published just a few years later.
The last stand-alone version of MS-DOS was 6.22, not 5.0. I know this because I upgraded my 5.0 system to 6.22.
This is not a title
Yep, that just about sums it up.
Windows CE-ME-NT http://www.the-jokes.com/funny-picture-cartoon-138.html
Microsoft breaks Volkswagen's record: Volkswagen only made 22 million bugs!
Keyboard not detected, press f1 to continue.
Ther box said "needs Windows 98 or better to run", so I installed Linux.
That really brings back memories
For the longest time as a child, I used to view computers as little more than glorified games machines. Oh, I'd sometimes type cheat programs in BASIC on my Amstrad but that's about as far as it got.
When my dad got his first PC, the pattern continued, with myself just playing a couple of games on it. Then one day I happened upon a tutorial for this weird thing called MS-DOS. It was confusing and terrifying but by the same token, oddly intruiging as well. I began poking around in different directories, learning how to move, copy and delete files using the command prompt. I even progressed to the arcane mysteries of creating custom config.sys and autoexec.bat files.
I was never blown away by Windows 3.x and only really started using it with the release of Windows 95. But I'll always be grateful to MS-DOS and that tutorial for showing me that there's more to computers than gaming.