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24:
READ ERROR (byte decoding error)
The data or header has been read into disk memory. but a hardware error has been
created by an invalid bit pattern in the data byte. May indicate grounding problems.
25:
WRITE ERROR (write-verify error)
The controller has detected a mismatch between the data written to diskette and the
same data in disk memory. May mean the diskette is faulty. If so, try another. Usc
only high quality diskettes from reputable makers.
26:
WRITE PROTECT ON
The controller has been requested to write a data block while the write protect
sensor is covered. Usually caused by writing to a diskette whose write protect notch
is covered over with tape to prevent changing the diskette's contents.
27:
READ ERROR (checksum error in header)
The controller detected an error in the header byte, of the requested data block. The
block was not read into disk memory. May indicate grounding problems. Usually
unrecoverable .
28:
WRITE ERROR (long data block)
The controller attempts to detect thc sync mark of the next header after writing a
data block. If the sync mark does not appear on time. this error message is
generated. It is caused by a bad diskette format (the data extends into the next
block) or by a hardware failure.
29:
DISK ID MISMATCH
The disk controller has been requested to access a di,kette which has not been
initialized. Can also occur if a diskette has a bad header.
30:
SYNTAX ERROR (general syntax)
The DOS cannot interpret the command sent to the command channel. Typically.
this is caused by an illegal number of file names, or an illegal pattern. Check your
typing and try again.
31:
SYNTAX ERROR (invalid command)
The DOS does not recognize the command.
It
must begin with the first character
sent. Check your typing and try again.
32:
SYNTAX ERROR (invalid command)
The command sent is longer than 58 characters. Use abbreviated di,k commands.
33:
SYNTAX ERROR (invalid file name)
Pattern matching characters cannot be used in the Save command or when Opening
files for the purpose of Writing new data. Spell out the tile name.
74
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