VAX 11/780 or 11/785 with an FPS-AP-120B and a Versatec plotter were the workhorse systems for seismic data processing in the oil industry. Commercial seismic processing packages were written so that they could call FPS AP-120B routines if one were present. References Page 206 ff, Parallel Computers Two: Architecture, Programming and Algorithms, by Roger W. Hockney, C. R. Jesshope. CRC Press 1988 FPS had a bibliography of papers. Parallel computing