• The DOS operating system for the Apple Computer's Apple II family of computers. This
was the primary operating system for this family from 1979 with the introduction of the floppy disk
drive until 1983 with the introduction of ProDOS; many people continued using it long after that
date. Usually it was called Apple DOS to distinguish it from MS-DOS.
• Commodore DOS, which was used by 8-bit Commodore computers. Unlike most other DOS systems, it was integrated into the disk drives, not loaded into the computer's own memory.
• Atari DOS, which was used by the Atari 8-bit family of computers. The Atari OS only offered low-level disk-access, so an extra layer called DOS was booted off of a floppy that offered higher level functions such as filesystems.
• MSX-DOS, for the MSX computer standard. Initial version, released in 1984, was nothing but MS-DOS 1.0 ported to Z80; but in 1988 it evolved to version 2, offering facilities such as subdirectories, memory management and environment strings. The MSX-DOS kernel resided in ROM (built-in on the disk controller) so basic file access capacity was available even without the command interpreter, by using BASIC extended commands.
• Disc Filing System (DFS) This was an optional component for the BBC Micro, offered as a kit with a disk controller chip, a ROM chip, and a handful of logic chips, to be installed inside the computer. See also Advanced Disc Filing System.
• AMSDOS, for the Amstrad CPC computers.
• GDOS and G+DOS, for the +D and DISCiPLE disk interfaces for the ZX Spectrum.
• Commodore DOS, which was used by 8-bit Commodore computers. Unlike most other DOS systems, it was integrated into the disk drives, not loaded into the computer's own memory.
• Atari DOS, which was used by the Atari 8-bit family of computers. The Atari OS only offered low-level disk-access, so an extra layer called DOS was booted off of a floppy that offered higher level functions such as filesystems.
• MSX-DOS, for the MSX computer standard. Initial version, released in 1984, was nothing but MS-DOS 1.0 ported to Z80; but in 1988 it evolved to version 2, offering facilities such as subdirectories, memory management and environment strings. The MSX-DOS kernel resided in ROM (built-in on the disk controller) so basic file access capacity was available even without the command interpreter, by using BASIC extended commands.
• Disc Filing System (DFS) This was an optional component for the BBC Micro, offered as a kit with a disk controller chip, a ROM chip, and a handful of logic chips, to be installed inside the computer. See also Advanced Disc Filing System.
• AMSDOS, for the Amstrad CPC computers.
• GDOS and G+DOS, for the +D and DISCiPLE disk interfaces for the ZX Spectrum.
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