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Disc format - CPCWiki
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Last modified on 28 September 2006, at 21:58

Disc format

Revision as of 21:58, 28 September 2006 by ChaRleyTroniC (Talk | contribs)

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CPCs could read discs formatted in three separate ways. Several high-capacity disc operating systems existed to add new formats to the three standard ones.

Standard CPC disc formats

  • Data: 180k single-sided. 40 tracks of nine 512-byte sectors each. Sectors numbered &C1 to &C9. 64 directory entries. Can also be read by PCWs.
  • System: 180k single-sided. 40 tracks of nine 512-byte sectors each. Sectors numbered &41 to &49. 64 directory entries. Two reserved tracks containing CP/M BIOS.
  • IBM: 40 tracks of eight 512-byte sectors each. Sectors numbered &01 to &08. Provided for compatibility with CP/M-86 (?).
  • Vendor: Term used for System format discs with no software in the reserved tracks.

Third-party CPC disc formats

References