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TR-DOS

TR-DOS is a disk operating system for the ZX Spectrum with Beta Disc and Beta 128 disc interfaces. TR-DOS and Beta disc were developed by Technology Research Ltd (UK), in 1984. A clone of this interface is also used in the Russian Pentagon and 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.

The latest official firmware version is 5.03 (1986). Unofficial versions with various enhancements and bug-fixes have been released since 1990, with the latest being 6.10E (2006).

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 images in the formats .TRD or .SCL.

Commands

The following list of commands is supported by TR-DOS V4.

  • <code>40</code>
  • <code>CAT</code>
  • <code>CLOSE</code>
  • <code>COPY</code>
  • <code>ERASE</code>
  • <code>FORMAT</code>
  • <code>GO TO</code>
  • <code>INPUT</code>
  • <code>LOAD</code>
  • <code>MOVE</code>
  • <code>NEW</code>
  • <code>OPEN</code>
  • <code>PRINT</code>
  • <code>RETURN</code>
  • <code>RUN</code>
  • <code>SAVE</code>

Utility programs include:

  • FILER
  • TAPECOPY (replaces BACKUP, COPY and SCOPY utility programs in TR-DOS V3)

See also

References

External links