Commodore Plus 4 - Page 408

396 Error Messages
4 FILE NOT FOUNT)
This message is displayed in response to an unsuccessful LOAD or DLOAD
command. If you are searching a tape for a file, this message indicates that an
end-of-tape marker has been read. If you are loading from disk, the message
indicates that the file is not saved on that disk. Issue a DIRECTORY command
to display the disk contents. It is possible that you misspelled the file name when
you issued the DLOAD command.
5 DEVICE NOT PRESENT
This message is displayed in response to a command to a peripheral device when
the computer cannot access that device because it is not turned on or is not
properly connected.
6 NOT INPUT FILE
This message indicates that you have tried to INPUT or GET data from a file you
created as an output-only file.
7 NOT OUTPUT FILE
This message indicates that you have tried to output data to a file you created as
an input-only file.
8 MISSING FILE NAME
This message is displayed when BASIC requires a file name in a LOAD, OPEN,
or SAVE command you have issued to the disk drive.
9 ILLEGAL DEVICE NUMBER
This message indicates that you sent a command to a peripheral that cannot
execute the command. You probably used the wrong device number in the
command (e.g., SAVE "LETTERFILE",4, which tells BASIC to save afile to the
printer).
10 NEXT WITHOUT FOR
BASIC requires a FOR command for every NEXT, but not a NEXT for every
FOR (although no NEXT would mean the FOR loop would execute only once).
This message indicates that you omitted or misplaced the NEXT command. This
is most likely to occur when multiple FOR... NEXT loops are nested incorrectly.