Not Implemented
A non-implemented OS call was used, probably via one of the BASIC keywords listed as 'Not implemented'.
All further errors are identical to the corresponding normal ATOM errors.
Name
The filename specified in LOAD, SAVE, *LOAD or *SAVE was not a legal filename.
Bad Command
The operating system command was unrecognised.
Sum
Erroneous data was received while loading from tape.
Syntax
An operating system command was recognised, but was followed by illegal parameters.