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fluxengine/doc/disk-atarist.md
2023-05-07 21:49:14 +00:00

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Almost PC compatible

Atari ST disks are standard MFM encoded IBM scheme disks without an IAM header. Disks are typically formatted 512 bytes per sector with between 9-10 (sometimes 11!) sectors per track and 80-82 tracks per side.

For some reason, occasionally formatting software will put an extra IDAM record with a sector number of 66 on a disk, which can horribly confuse things. The Atari profiles below are configured to ignore these.

Be aware that many PC drives (including mine) won't do the 82 track formats.

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References