Commodore Plus 4 - Page 414

408 Error Messages
26 WRITE PROTECT ON
A write protect tab was detected on a diskette on which a write operation
was attempted. Remove the tab or use another formatted diskette.
27 READ ERROR (header block checksum error)
The checksum from the header block of the requested sector was in error.
This can indicate a corrupt sector.
28 WRITE ERROR (data block too long)
The sync mark of the next header block could not be located. This message
can occur as a result of a hardware problem or an incorrectly formatted
diskette.
29 DISK ID MISMATCH
The ID read from the header block did not match the ID in memory. The ID
of a diskette is permanently recorded in every header block. This error can
result from not initializing the diskette or from a corrupt header block.
30 SYNTAX ERROR (general)
DOS could not understand a command sent to it through the command
channel. This error can be caused by an incorrect number of file names,
incorrect punctuation, or other errors in the DOS command.
31 SYNTAX ERROR (command not valid)
The command sent to the DOS through the command channel was not
recognized by DOS. This can be caused by not starting the command in the
first position of the string sent.
32 SYNTAX ERROR (command too long)
A command longer than 58 characters was sent to DOS through the com
mand channel.
33 SYNTAX ERROR (file name not valid)
A file name sent to DOS was incorrect. This can mean a wildcard was used
illegally.