CHECKSUM ERROR IN HEADER (27 T S)
Disk controller has detected an error in the
header of the requested data block. The block has
not been read into the DOS memory. This message
may also indicate grounding problems.
WRITE-VERIFY ERROR (25 T S)
This message is generated if the controller
detects a mis-match between the written data and
the data in the DOS memory.
WRITE PROTECT ON (26 T S)
This message is generated when the controller has
been requested to write a data block while the
write protect switch is depressed. Typically,
this is caused by using a diskette with a write
protect tab over the notch.
LONG DATA BLOCK (28 T S)
The controller attempts to detect the sync mark of
the next header after writing a data block. If
the sync mark does not appear within a
pre-determined time, the error message is
generated. The error message is caused by a bad
diskette format (the data extends into the next
block), or by a hardware failure.
DISK ID MIS-MATCH (29 T S)
This message is generated when the controller has
been requested to access a diskette which has not
been initialised. This error can also occur if a
diskette has a bad header.
GENERAL SYNTAX (30 00 00)
The DOS cannot interpret the command sent to the
command channel. Typically, this is caused by an
illegal number of file names, or patterns are
illegally used. For example, two file names may
appear on the left side of the COPY command.
INVALID COMMAND (31 00 00)
The DOS does not recognise the command. The
command must start in the first position.
22
To Next Page
Loading...
