User`s manual

28: WRITE ERROR (long data block)

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 is caused by

a bad diskette format (the data extends into the next block), or by

hardware failure.

29: DISK ID MISMATCH

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.

30: SYNTAX ERROR (general syntax)

The DOS cannot interpret the command sent to the command channel.

Typically, this is caused by an illegalnumber of file names, or patterns are

illegally used. For example, two file names may appear on the left side of

the COPY command.

31: SYNTAX ERROR (invalid command)

The DOS does not recognize the command. The command must start in

the first position.

32: SYNTAX ERROR (long line)

The command sent is longer than 58 characters.

33: SYNTAX ERROR (invalid file name)

Pattern matching is invalidly used in the OPEN or SAVE command.

34: SYNTAX ERROR (no file given)

The file name was left out of a command or the DOS does not recognize it

as such. Typically, a colon (:) has been left out of the command.

39: SYNTAX ERROR (invalid command)

This error may result if the command sent to command channel

(secondary address IS) is unrecognizable by the DOS.

50: RECORD NOT PRESENT

Result of disk reading past the last record through INPUT#, or GET#

commands. This message will also occur after positioning to a record

beyond end of file in a relative file. If the intent is to expand the file by

adding the new record (with a PRlNT# command), the error messagemay

be ignored. INPUT or GET should not be attempted after this error is

detected without first repositioning.

51: OVERFLOW IN RECORD

PRINT# statement exceeds record boundary. hiformation is truncated.

Since the carriage return which is sent as a record terminator is counted in

the record size, this messagewill occur if the total characters in the record

(including the final carriage return) exceeds the defined size.