Generic bitstream is a fabric-independent bitstream where configuration bits are organized out-of-order in a database. This can be regarded as a raw bitstream used for
debugging: Hardware engineers can validate if their configuration memories across the FPGA fabric are assigned to expected values
an exchangeable file format for bitstream assembler: Software engineers can use the raw bitstream to build a bitstream assembler which organize the bitstream in the loadable formate to FPGA chips.
creation of artificial bitstream: Test engineers can craft artificial bitstreams to test each element of the FPGA fabric, which is typically not synthesizable by VPR. Use the
--read_fileoption to load the artifical bitsteam to OpenFPGA (see details in FPGA-Bitstream).
The fabric-independent bitstream cannot be directly loaded to FPGA fabrics
See details in Architecture Bitstream (.xml)