Editing Atari DOS (section)

==Third-party DOS programs==
Many of these DOSes were released by manufacturers of third-party drives, anyone who made drive modifications, or anyone who was dissatisfied with the available DOSes. Often, these DOSes could read disks in higher densities, and could set the drive to read disks faster (using ''Warp Speed'' or ''Ultra-Speed'' techniques). Most of these DOSes (except SpartaDOS) were DOS 2.0 compatible.

===SmartDOS===
Menu driven DOS that was compatible with DOS 2.0. Among the first third-party DOS programs to support [[#Disk formats|double-density]] drives.

Many enhancements including sector copying and verifying, speed checking, turning on/off file verifying and drive reconfiguration.

Published by Rana Systems. Written by John Chenoweth and Ron Bieber, last version 8.2D.

===OS/A+ and DOS XL===
DOS produced by [[Optimized Systems Software]]. Compatible with DOS 2.0 - Allowed the use of Double Density floppies. Unlike most ATARI DOSses, this used a [[Command-line interface|command line]] instead of a menu. [[DOS XL]] provided a menu program in addition to the command line.

===SuperDOS===
This DOS could read SS/SD, SS/ED, SS/DD and DS/DD disks, and made use of all known methods of speeding up disk-reads supported by the various third-party drive manufacturers.

Published by Technical Support{{clarification needed|date=September 2016}}. Written by Paul Nicholls.

===Top-DOS===
Menu driven DOS with enhanced features. Sorts disk directory listings and can set display options. File directory can be [[data compression|compressed]]. Can display deleted files and undelete them. Some advanced features required a proprietary TOP-DOS format.

Published by Eclipse Software. Written by R. K. Bennett.

===Turbo-DOS===
This DOS supports Turbo 1050, Happy, Speedy, XF551 and US Doubler highspeed drives. XL/XE only.

Published by Martin Reitershan Computertechnik. Written by Herbert Barth and Frank Bruchhäuser.

===MyDOS===
This DOS adds the ability to use sub-directories, and supports hard-drives.<ref>{{Cite book |last=Marslett |first=Charles |url=https://seriouscomputerist.atariverse.com/media/pdf/manual/MyDOS%204.50%20-%20Manual.pdf |title=MYDOS Version 4.50 |last2=Puff |first2=Robert |publisher=WORDMARK Systems |year=1988 |edition= |type=User Guide |format=PDF |quote=For Atari Home Computers.}}</ref><ref>{{Citation |title=Miscellaneous PD Disks: MyDos Disk Operating System Replacement, utilities |url=https://archive.org/details/a8b_misc_mydos45u |access-date=2024-09-14}}</ref><ref>{{Cite web |title=Atari 400 800 XL XE MyDOS 5.0 |url=https://www.atarimania.com/utility-atari-400-800-xl-xe-mydos-50_30965.html |access-date=2024-09-14 |website=www.atarimania.com}}</ref><ref name=":0">{{Cite web |last=Fox-1 |first=Sysop |title=Disk Formats Explained |url=https://atari.fox-1.nl/disk-formats-explained/ |access-date=2024-09-14 |website=THUNDERDOME – the ATARI site |language=en-US |quote=There is no real important difference in the special boot bytes on a MyDos disk and an Atari Dos Disk.}}</ref>

Published by Wordmark Systems, includes complete [[source code]] under [[copyleft license]], with an exception on distributing commercially only if it included in software or derived software made of it would cost less than $50.<ref>{{Cite web |title=MyDOS programs and tools |url=https://www.wordmark.org/mydos.html |access-date=2024-09-14 |website=www.wordmark.org}}</ref><ref>{{Cite web |title=Mathy's MyDOS page |url=https://www.mathyvannisselroy.nl/mydos.htm |access-date=2024-09-14 |website=www.mathyvannisselroy.nl}}</ref><ref name=":1">{{Cite web |title=ANTIC The Atari 8-bit Podcast: ANTIC Interview 393 - Charles Marslett, MYDOS and FastChip |url=https://ataripodcast.libsyn.com/antic-interview-393-charles-marslett-mydos-and-fastchip |access-date=2024-09-14 |website=ataripodcast.libsyn.com |language=en |quote=Charles Marslett wrote floppy disk and hard drive drivers for Percom, and was the creator of MYDOS, a disk operating system for the Atari 8-bit computers that offered support for double density sectors, subdirectories, and hard drives.}}</ref><ref>{{Cite web |title=Index of /~archive/atari/8bit/Dos/Mydos |url=https://websites.umich.edu/~archive/atari/8bit/Dos/Mydos/ |access-date=2024-09-14 |website=websites.umich.edu}}</ref>

There is number of free addons and extensions for MyDOS created by users.<ref>{{Cite web |last=Fox-1 |first=Sysop |date=2018-06-05 |title=Tag: mydos |url=https://atari.fox-1.nl/tag/mydos/ |access-date=2024-09-14 |website=THUNDERDOME – the ATARI site |language=en-US}}</ref><ref>{{Cite web |title=Atari 400/800/XL/XE Miscellaneous Software & Utilities - Chebucto Community Net |url=https://www.chebucto.ns.ca/Services/PDA/Atari8Misc.shtml |access-date=2024-09-14 |website=www.chebucto.ns.ca}}</ref><ref>{{Cite web |date=2016-02-03 |title=MyDOS |url=https://sourceforge.net/projects/mydos/ |access-date=2024-09-14 |website=SourceForge |language=en}}</ref><ref name=":2">{{Cite web |title=:: drac030.atari8.info |url=http://drac030.krap.pl/en-kmkjz-pliki.php |access-date=2024-09-14 |website=drac030.krap.pl |quote=Utility disk for the interface. ATR format, side A for MyDOS, side B for SpartaDOS (updated 19 I 2011).}}</ref>

==== MyPicoDOS ====
This is a fork of MyDOS, intended to be used as game laucher.<ref>{{Citation |last=Reichl |first=Matthias |title=HiassofT/MyPicoDOS |date=2024-03-27 |url=https://github.com/HiassofT/MyPicoDOS |access-date=2024-09-14}}</ref>

===SpartaDOS===
This DOS used a command-line interface. Was not compatible with DOS 2.0, but could read DOS 2.0 disks. Supports [[subdirectories]] and [[hard drives]] being capable of handling filesystems sized up to 16 [[megabyte|MB]]. Included the capability to create primitive batch files.

====SpartaDOS X====
[[File:SpartaDOS X prompt.png|thumb|350px|Screenshot of SpartaDOS X by FTE & DLT]]
{{main|SpartaDOS X}}
A more sophisticated version of [[SpartaDOS]], which strongly resembles MS-DOS in its look and feel. It was shipped on a 64 KB [[ROM cartridge]].

====RealDOS====
A SpartaDOS compatible DOS (in fact, a renamed version of SpartaDOS 3.x, for legal reasons).

''RealDOS'' is [[shareware]] by Stephen J. Carden and Ken Ames.

===BW-DOS===
[[File:Bwdos.png|thumb|350px|Screenshot of BW-DOS by Jiří Bernasek]]
A SpartaDOS compatible DOS, the last version 1.30 was released in December 1995. It has a much lower [[memory footprint]] compared to the original SpartaDOS and does not use the RAM under the [[read only memory|ROM]] of XL/XE machines, allowing it to be used on the older [[Atari 400]]/[[Atari 800|800]] models.

BW-DOS is [[freeware]] by Jiří Bernasek.

===XDOS===
XDOS is freeware by Stefan Dorndorf.

=== LiteDOS ===
Minimalistic DOS for Atari, supporting files formats of various other DOS software, such as files of Atari DOS and MyDOS.<ref>{{Cite web |title=LiteDOS (c) Mr.Atari |url=http://www.mr-atari.com/Mr.Atari/LiteDOS/ |access-date=2024-09-14 |website=www.mr-atari.com}}</ref>