Reads a AMBER top file to build the system. It uses atom types, partial charges and masses from the PRMTOP file.
The format is defined in PARM parameter/topology file specification. The reader tries to detect if it is a newer (AMBER 12?) file format by looking for the flag “ATOMIC_NUMBER”.
Note
The Amber charge is converted to electron charges as used in MDAnalysis and other packages. To get back Amber charges, multiply by 18.2223.
Changed in version 0.7.6: parses both amber10 and amber12 formats