Brief explanation

GitHub uses https://github.com/github/linguist to do language stats. Currently the https://github.com/github/linguist/blob/master/lib/linguist/languages.yml file is missing a lot of important file formats used in FPGA/ASIC development.

Of the top of my head;

• .gds

  .lib - Liberty timing files

  .oa - OpenAccess files

  .spice - Spice simulation files

  mag, maglef - magic

  LEF

  CDL
  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.

Commercial file formats;

• Cadence file format names

  Calibre file format names
  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.

Should check the following are covered too.

• * .v - Verilog (C like -- should use a // comments, supports /* */ too)
• * .vh - Verilog header (C like -- should use a // comments, supports /* */ too)
• * .sv - SystemVerilog (should use /* / comments, supports / */ too)
• * .svh - SystemVerilog header (should use /* / comments, supports / */ too)
• * .tcl - TCL (should use # comments)
• * .sdc / *.xdc - Synopsis Design Constraint / Xilinx Design Constraint files -- Really TCL scripts (see above)
• .blif/.eblif - Berkley Logic Interface Format (uses bash # style comments)
• .edif - Electronic Design Interchange Format (S-Expressions based -- unknown comment style?)
• .lef - Library Exchange Format (should use # comments)
• .lib - Liberty Timing File (should use /* */ style comments)
• .sdf - Standard Delay Format (LISP file which supports /* */ and // comments)
• .spef - Standard parasitics exchange format (supports only // style comments)