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AMSDOS

In today's article we are going to explore AMSDOS, a highly relevant topic that has captured the attention of many people in recent times. With a detailed and exhaustive approach, we will dive into the most important and controversial aspects related to AMSDOS, with the aim of offering a complete and objective view on the topic. Through research and in-depth analysis, we will examine the implications and repercussions that AMSDOS has in different areas of society, as well as possible solutions or approaches to address this issue effectively. Don't miss this opportunity to deepen your knowledge about AMSDOS and gain a broader and more informed perspective on this highly relevant issue.

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AMSDOS
DeveloperLocomotive Software
OS familyDisk operating systems
Working stateDiscontinued
Source modelClosed source
Initial release1984 (1984)
Default
user interface		None, access through BASIC and firmware calls

AMSDOS is a disk operating system for the 8-bit Amstrad CPC Computer (and various clones). The name is a contraction of Amstrad Disk Operating System.[1]

AMSDOS first appeared in 1984 on the CPC 464, with added 3 inch disk drive, and then on the CPC 664 and CPC 6128. Relatively fast and efficient for its time, AMSDOS was quicker and more effective than most of its contemporaries.

AMSDOS was provided built into ROM (either supplied with the external disk drive or in the machine ROM, depending on model) and was accessible through the built-in Locomotive BASIC as well as through firmware routines. Its main function was to map the cassette access routines (which were built into every CPC model) through to a disk drive. This enabled the majority of cassette-based programs to work with a disk drive with no modification. AMSDOS was able to support up to two connected disk drives.

Commands

AMDOS extends the AMSTRAD BASIC by the addition of a number of external commands which are identified by a preceding ¦ (bar) symbol. The following is a list of external commands supported by AMSDOS.[2]

  • ¦A
  • ¦B
  • ¦CPM
  • ¦DIR
  • ¦DISC
  • ¦DISC.IN
  • ¦DISC.OUT
  • ¦DRIVE
  • ¦ERA
  • ¦REN
  • ¦TAPE
  • ¦TAPE.IN
  • ¦TAPE.OUT
  • ¦USER

Alternatives

Other disk operating systems for the Amstrad range included CP/M (which was also bundled with an external disk drive, or built-in on ROM depending on model), RAMDOS, which allowed the full (800K) capacity of single-density 3 ½" disks to be used providing a suitable drive was connected and SymbOS.

References

  1. ^ "CPC 464". Archived from the original on 2019-03-25. Retrieved 2009-08-04.
  2. ^ AMSTRAD CPC664 User Instructions
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