Commodore Plus 4 - Page 188

2E
:\
WRITE ERROR
(write-verify error)
WRITE PROTECT ON
27
28
READ ERROR
(checksum error
in header)
WRITE ERROR
(long data block)
DISK ID MISMATCH
3 )
SYNTAX ERROR
(general syntax)
byte. This message may also
indicate grounding problems.
This message is generated if the
controller detects a mismatch
between the written data and the
data in the DOS memory.
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.
The controller has detected an
error in the header ol the re
quested data block. The block
has not been read into the DOS
memory. This message may also
indicate grounding problems.
The controller attempls 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
is caused by a bad diskette format
(the data extends into the next
block), or by hardware failure.
This message is generated when
the controller has been requested
to access a diskette which has
not been initialized- The message
can also occur if a diskette has a
bad header.
The DOS cannot interpret the
command sent to the command
channel. Typically, this is caused
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