Difference between revisions of "Disc format"
From CPCWiki - THE Amstrad CPC encyclopedia!
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== Standard CPC disc formats == | == 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 [[PCW]]s. | + | * '''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 [[PCW]]s. The useable capacity is 178k. |
| − | * '''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. | + | * '''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. The useable capacity is 169k. |
| − | * '''IBM''': 40 tracks of eight 512-byte sectors each. Sectors numbered &01 to &08. Provided for compatibility with CP/M-86 (?). | + | * '''IBM''': 160k single-sided. 40 tracks of eight 512-byte sectors each. Sectors numbered &01 to &08. Provided for compatibility with CP/M-86 (?). The useable capacity is 158k. |
| − | * '''Vendor''': Term used for System format discs with no software in the reserved tracks. | + | * '''Vendor''': Term used for System format discs with no software in the reserved tracks. The useable capacity is 169k. |
== Third-party CPC disc formats == | == Third-party CPC disc formats == | ||
| − | * [[ | + | * [[FAT]] formats (invented by MS-DOS; supported by [[SymbOS]], [[DOS Copy]], [[ReadDSK]], [[SymDOS]]) |
| − | + | ||
* [[MS800]] formats | * [[MS800]] formats | ||
| + | * [[Stream2#MoDOS|Prem]] format (supported by [[Stream2]]) | ||
* [[RODOS]] formats | * [[RODOS]] formats | ||
| + | * [[ROMDOS]] formats (also supported by [[ParaDOS]]: D80 supported by [[S-DOS]] and [[400K/S]]) | ||
* [[Ultraform]] | * [[Ultraform]] | ||
| + | * [[Xexor]] formats (also supported by [[ParaDOS]]) | ||
* XD-DOS etc.?? | * XD-DOS etc.?? | ||
Revision as of 18:43, 4 October 2006
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. The useable capacity is 178k.
- 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. The useable capacity is 169k.
- IBM: 160k single-sided. 40 tracks of eight 512-byte sectors each. Sectors numbered &01 to &08. Provided for compatibility with CP/M-86 (?). The useable capacity is 158k.
- Vendor: Term used for System format discs with no software in the reserved tracks. The useable capacity is 169k.
Third-party CPC disc formats
- FAT formats (invented by MS-DOS; supported by SymbOS, DOS Copy, ReadDSK, SymDOS)
- MS800 formats
- Prem format (supported by Stream2)
- RODOS formats
- ROMDOS formats (also supported by ParaDOS: D80 supported by S-DOS and 400K/S)
- Ultraform
- Xexor formats (also supported by ParaDOS)
- XD-DOS etc.??
