Games - Atari TOS

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The Operating System (TOS) was the operating system of the Atari ST range of computers. This range included the 520ST, 1040ST and the F, FM and E variations (e.g.1040STE). Later, 32-bit machines (TT, Falcon030) were developed using a new version of TOS, called MultiTOS, which was based on MiNT.

TOS combined Digital Research's GEM GUI running on top of the DOS-like GEMDOS (which was based on CP/M-68K). Features included a flat memory model, MS-DOS-compatible disk format, support for MIDI, and a variant of SCSI called ACSI (in later versions).

There is some difference of opinion over what the acronym TOS stands for, the main candidates being "Tramiel Operating System" (named after Jack Tramiel, Atari's head at the time) or simply "The Operating System".

Versions

TOS 1

1.0 Earliest version released on disk. First ROM release followed (1985). Came in 6-chip and 2-chip configurations.
1.2 (1.02) fixed bugs and supported Blitter co-processor.
1.4 (1.04) Known as "Rainbow TOS", bug fixes, file selector changed, DOS-compatible disk formatting.
1.6 Known as "STe TOS", mostly support for STe machines.
1.62 bug fixes

TOS 2

2.02, 2.05, 2.06 Bug fixes, 1.44MB disk support, memory test. Used in Mega STE. Greatly enhanced GEM GUI.
2.08 used in notebook ST.

TOS 3

3.01, 3.05, 3.06 Primarily for 68030 TT support.

TOS 4

4.00, 4.01, 4.02, 4.04 Update for Falcon 030 machines only.

[ Visit the complete Wikipedia entry for Atari TOS ]

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