DOS 4.0 / QDOS and Source Code
DOS 4.0 (C) 1984 Atari inc.
DOS 4.0 Source Code
![Dos 4.0 - Screenshot 01](https://atari.fox-1.nl/wp-content/uploads/dos4-1.png)
Dos 4.0 – Screenshot 01
![Dos 4.0 - Screenshot 02](https://atari.fox-1.nl/wp-content/uploads/dos4-2.png)
Dos 4.0 – Screenshot 02
![Dos 4.0 - Screenshot 03](https://atari.fox-1.nl/wp-content/uploads/dos4-3.png)
Dos 4.0 – Screenshot 03
![Dos 4.0 Source - Screenshot 01](https://atari.fox-1.nl/wp-content/uploads/dos4-source-1.png)
Dos 4.0 Source – Screenshot 01
- Also known as “QDOS” or “Antic-DOS”
- Written by Atari, released by Antic
- Menu driven
- XL/XE only
- D0: – D9:
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