+------------------------------------------------------------------------
  |
  |      CBM DOS V2.6 Error Messages
  |
  +------------------------------------------------------------------------
  |
  |   Error #00   OK
  |   Error #01   FILES SCRATCHED,XX (,TT,SS on error)
  |   Error #20   READ ERROR (block header not found),TT,SS
  |   Error #21   READ ERROR (no sync character),TT,SS
  |   Error #22   READ ERROR (data block not present),TT,SS
  |   Error #23   READ ERROR (checksum error in data block),TT,SS
  |   Error #24   READ ERROR (byte decoding error)
  |   Error #25   WRITE ERROR (write-verify error),TT,SS
  |   Error #26   WRITE PROTECT ON,TT,SS
  |   Error #27   READ ERROR (checksum error in header),TT,SS
  |   Error #28   WRITE ERROR (long data block)
  |   Error #29   DISK ID MISMATCH,TT,SS
  |   Error #30   SYNTAX ERROR (general syntax)
  |   Error #31   SYNTAX ERROR (invalid command)
  |   Error #32   SYNTAX ERROR (invalid command)
  |   Error #33   SYNTAX ERROR (invalid file name)
  |   Error #34   SYNTAX ERROR (no file given)
  |   Error #39   SYNTAX ERROR (invalid command)
  |   Error #50   RECORD NOT PRESENT
  |   Error #51   OVERFLOW IN RECORD
  |   Error #52   FILE TOO LARGE
  |   Error #60   WRITE FILE OPEN
  |   Error #61   FILE NOT OPEN
  |   Error #62   FILE NOT FOUND
  |   Error #63   FILE EXISTS
  |   Error #64   FILE TYPE MISMATCH
  |   Error #65   NO BLOCK,TT,SS
  |   Error #66   ILLEGAL TRACK AND SECTOR,TT,SS
  |   Error #67   ILLEGAL SYSTEM T OR S,TT,SS
  |   Error #70   NO CHANNEL (available)
  |   Error #71   DIRECTORY ERROR,TT,SS
  |   Error #72   DISK FULL
  |   Error #73   DOS MISMATCH (73, CBM DOS V2.6 1541)
  |   Error #74   DRIVE NOT READY
  |
  +------------------------------------------------------------------------