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AMSDOS Header

1 byte added, 11 July
These headers are detected by checksumming the first 67 bytes of the record. If the checksum is as expected then a header is present, if not then there is no header.
To calculate the checksum , just add all bytes from 00 up to and including byte 66 together.
This is only a summary. All details are in [[Firmware Guide]] chapter 9, page 4.
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