>>8761536
The name DOS
Meant Disk Operating System
As opposed to TOS (Tape Operating System)
Many companies used the name DOS to refer to their Disk Operating System
Every company wrote their own DOS code
And they had no choice, because every company had a different CPU design
And a different machine instruction set.
For instance, the DEC (Digital Equipment Corp)
PDP-11 computer was quite different
From the Intel 8088 based on Intel's earlier
4-bit calculator chips
DOS-11 was the first OS for the PDP-11
But the first OS for the IBM 8088 PC is harder to pin down.
The IBM PC was IBM's second personal computer
Earlier they made the 5150 with either APL or Basic in ROM
So that one had a ROM OS.
Then the IBM PC also came with Basic in ROM so was that the first OS?
For commercial use they sold it with a Z-80 on a card running CP/M
So was that the first OS?
While IBM was trying to get Digital Research to agree on developing 8088 CPM,
Bill Gates came along with a Quick and Dirty OS
Named QDOS, that he bought from a couple of guys in Seattle.
It was renamed MS-DOS and in the end, he did a deal with IBM at a price that made PC-DOS the cheapest OS for the IBM-PC
This caused sales to skyrocket and surpass those of other PC manufacturers
Like Tandy/Radio Shack
Who made a machine with up to 4 diskette drives
Running Microsoft's first commercial OS named Xenix
This was a port of AT&T UNIX that had been developed in Santa Cruz, CA
By the Santa Cruz Operation, SCO
Microsoft developed its first spreadsheet and word processor
Multiplan and Word,
For the Xenix OS
But when they were ported to the IBM PC and DOS
Sales skyrocketed
And the other products faded.
Now, how do I know this? Did I see a different documentary?
No!
I have thousands of sources including major computers magazines published in the late 70s through the late 80s
I built systems and programmed on the original IBM PC, and on compatibles like Compaq and TI, and on the clones which followed, sold with no ROM chips, and therefore unusable, until a plain unmarked brown envelope arrived in the mail with an unmarked ROM chip. I still have my copy of the original IBM PC programmers guide with an assembly listing of the ROM. I have the issues of the Bell Systems technical journal which are the first public documentation of UNIX. I have computer printouts of the programming manual for Unix 6th edition which I printed out in 1975 at Uni on a PDP11/44.
Anybody who is willing to dig, and not except a single source as evidence
Could have learned this story in a few hours.
You would then have multiple independent sources of data
That corroborate each other
If you are not willing to do that
Then you are a SHEEP
And you and your family deserve to die
Because that is exactly what will happen to you.
You no longer have a choice!!!
The war has been started
Either you stand up and join the revolution
Or the Cabal will regroup and they will crush you like the miserable worm that you are
The choice is yours