5.2. I/O Results

Version I.5, September 1978

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0 No error 1 Bad Block, Parity error (CRC) 2 Bad Unit Number 3 Bad Mode, Illegal operation 4 Undefined hardware error 5 Lost unit, Unit is no longer on-line 6 Lost file, File is no longer in directory 7 Bad Title, Illegal file name 8 No room, insufficient space 9 No unit, No such volume on line 10 No file, No such file on volume 11 Duplicate file 12 Not closed, attempt to open an open file 13 Not open, attempt to access a closed file 14 Bad format, error in reading real or integer 15 Ring buffer overflow
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