Commodore Plus 4 - Page 417

Machine Language Monitor and ROM Subroutine Error Messages 408
74 DRIVE WOT READY
There is no diskette in the designated drive, or the diskette is not properly
inserted.
Machine Language Monitor and ROM Subroutine Error Messages
0 The routine was terminated by the STOP key.
1 The logical file table is full (too many files are open).
2 The specified logical file is already open.
3 The specified logical file is not open.
4 The specified file name is not found on the specified device.
5 The specified device is not present.
6 The specified device is not an input device.
7 The specified device is not an output device.
8 The file name was missing.
9 The specified device is illegal for this purpose.