The board was created using the KiCad software suite. See License file for license of this board and license information and attribution for included files.
The directory gerber contains the gerber files for board layout. The zip file in the gerber directory is the files that will be sent to the PCB vendor.
The directory pdf has the board schematic (sa1000.pdf), and the board layers.
The directory info has this file and the board license.
The directory bom has the bill of materials for building the board.
The directory all_fp.pretty is the PCB footprints used for the board.
sa1000.pro is the kicad project file.
Other files are various kicad files.
The directory datasheets has datasheets for the chips used.
See http://www.pdp8online.com/mfm/sa1000/sa1000_assembly.shtml for more information on board.