Commodore DOS

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Commodore DOS, aka CBM DOS, was the disk operating system used with Commodore's 8-bit computers. Unlike most other DOS systems before or since, CBM DOS was integrated in the internal ROM of the floppy disk* drives, not loaded from disk into the computer's own RAM at startup.

(* as well as the very few hard disk models Commodore made for its 8-bit range )

Versions of CBM DOS

• 1.0
• X.Y
• 2.6 – the most common version due to its use in the 1541 floppy disk drive
• S.T

References

• Immers, Richard; Neufeld, Gerald G. (1984). Inside Commodore DOS. The Complete Guide to the 1541 Disk Operating System. DATAMOST, Inc & Reston Publishing Company, Inc. (Prentice-Hall). ISBN 0-8359-3091-2.

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