File Formats

OpenFPGA widely uses XML format for interchangable files

• Pin Constraints File (.xml)
• Repack Design Constraints (.xml)
• Architecture Bitstream (.xml)
• Fabric-dependent Bitstream
  • Plain text (.bit)
  • XML (.xml)
• Bitstream Setting (.xml)
  • pb_type-related Settings
  • Interconnection-related Settings
• Fabric Key (.xml)
  • Configurable Region
  • Configurable Block
  • BL Shift Register Banks
  • WL Shift Register Banks
• I/O Mapping File (.xml)
• I/O Information File (.xml)
• Bitstream Distribution File (.xml)
  • Region-Level Bitstream Distribution
  • Block-Level Bitstream Distribution
• Bus Group File (.xml)
  • Bus-related Syntax
  • Pin-related Syntax
• Pin Constraints File (.pcf)
• Pin Table File (.csv)