View source for TR-DOS

{{Short description|Disk operating system for the ZX Spectrum}}
{{Infobox OS
| name                   = TR-DOS<!-- Name of program or distribution -->
| logo                   = <!-- filename only (no wikilink, no Image:/File:) -->
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| collapsible            =
| version of             = <!-- For articles about releases of operating systems ONLY -->
| developer              = [[Technology Research Ltd]]<!-- Name of main developer or sponsor-->
| family                 = <!-- "Unix-like" or "Microsoft Windows" -->
| working state          = <!-- "Current", "Discontinued" (operating systems), or "No longer supported" (releases) -->
| source model           = <!-- "Open source", "Closed source", or "Shared source" -->
| released               = {{Start date and age|1984}}
| discontinued           = <!-- DON'T use this for articles about releases of operating systems -->
| RTM date               = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| GA date                = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| latest release version = 5.03
| latest release date    = {{Start date and age|1986}}
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| language               = [[English language|English]]<!-- Supported human languages (English, French, Italian, Arabic, ...) -->
| update model           = <!-- APT, Windows Update, etc. -->
| package manager        = <!-- dpkg, rpm, Windows installer, etc. -->
| supported platforms    = [[ZX Spectrum]]<!-- IA-32, x64, Itanium, ARM, etc. -->
| kernel type            = <!-- Hybrid, Monolithic, Microkernel, Exokernel, Nanokernel, etc. -->
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| license                = [[Proprietary software|proprietary]]
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'''TR-DOS''' is a [[disk operating system]] for the [[ZX Spectrum]] with [[Beta Disk Interface|Beta Disc]] and Beta 128 disc interfaces. TR-DOS and Beta disc were developed by [[Technology Research Ltd]] (UK), in 1984.<ref>{{cite web|url=http://www.worldofspectrum.org/infoseekid.cgi?id=1000034|title=Beta Disk Interface - World of Spectrum|website=Worldofspectrum.org|accessdate=9 December 2018}}</ref><ref>{{cite book|url=https://books.google.com/books?id=4yG4AwAAQBAJ&q=Technology+Research+Ltd+tr-dos+-wikipedia&pg=PA78|title=The ZX Spectrum on Your PC|first=Colin|last=Woodcock|date=7 May 2012 |publisher=Lulu.com |isbn=9781471696121|accessdate=9 December 2018|via=Google Books}}</ref> A clone of this interface is also used in the Russian [[Pentagon (computer)|Pentagon]] and [[Scorpion (computer)|Scorpion]] machines.
It became a standard in Russia and most disk releases for the [[ZX Spectrum]], especially of modern programs, are made for TR-DOS as opposed to other disk systems.<ref>{{Cite news |last=Woodcock |first=Colin |date=December 2003 |title=TR-DOS |work=ZXF |issue=6 |url=https://sites.google.com/site/zxfmagazine/storage23}}</ref><ref>{{cite web |last1=Pavlov |first1=Paul |last2=Striker |date=2022 |title=Virtual TR-DOS |url=https://vtrd.in/ |accessdate=9 December 2018 |website=Virtual TR-DOS}}</ref>
The latest official firmware version is 5.03 (1986).<ref>{{Cite book |url=http://z00m.speccy.cz/docs/betadisk.txt |title=Technology Research BETA 128 Disk Interface - User Manual |publisher=Technology Research Ltd |year=1986|archive-url=https://web.archive.org/web/20160923142910/http://z00m.speccy.cz/docs/betadisk.txt |archive-date=2016-09-23 }}</ref>
Unofficial versions with various enhancements and bug-fixes have been released since 1990, with the latest being 6.10E (2006).<ref>{{Cite web |title=Customized ROM |url=http://zxspectrum.it.omegahg.com/_TR.htm |url-status=dead |archive-url=https://web.archive.org/web/20160918231824/http://zxspectrum.it.omegahg.com/_TR.htm |archive-date=2016-09-18 |access-date=2016-08-19 |website=speccy4ever}}</ref>
TR-DOS handles SS/DS, SD/DD [[floppy disks]]. All modern versions support [[RAM Disk]] and some versions support [[hard disks]].
Current emulators support TR-DOS [[disk image]]s in the formats ''.TRD'' or ''.SCL''.
== Commands ==
The following list of [[command (computing)|commands]] is supported by TR-DOS V4.<ref>{{Cite book |url=http://k1.spdns.de/Vintage/Sinclair/82/Peripherals/Disc%20Interfaces/Beta%20128%20Disc%20Interface%2C%20TRDOS%20(Technology%20Research)/BetaDiskInterface_ManualV4.pdf |title=DISK INTERFACE Manual Supplement for version 4 of TR-DOS |publisher=Technology Research Limited |year=1984}}</ref>
{{div col|colwidth=9em}}
* <code>40</code>
* <code>CAT</code>
* <code>CLOSE</code>
* <code>[[copy (command)|COPY]]</code>
* <code>[[del (command)|ERASE]]</code>
* <code>[[format (command)|FORMAT]]</code>
* <code>GO TO</code>
* <code>INPUT</code>
* <code>LOAD</code>
* <code>[[move (command)|MOVE]]</code>
* <code>NEW</code>
* <code>OPEN</code>
* <code>PRINT</code>
* <code>RETURN</code>
* <code>RUN</code>
* <code>SAVE</code>
{{div col end}}
Utility programs include:
* FILER
* TAPECOPY (replaces BACKUP, COPY and SCOPY utility programs in TR-DOS V3)
==See also==
* [[iS-DOS]]
* [[CP/M]]
* [[DISCiPLE]]
==References==
{{Reflist}}
==External links==
* [http://worldofspectrum.org/ World of Spectrum]
* [http://trd.speccy.cz/ Virtual TR-DOS]
* [http://tr-dos.ru/ Web TR-DOS. Encyclopedia of TR-DOS, ZX Games]
{{Disk operating systems}}
{{DEFAULTSORT:Tr-Dos}}
[[Category:Microcomputer software]]
[[Category:ZX Spectrum]]
[[Category:Disk operating systems]]