File Formats

OpenFPGA widely uses XML format for interchangeable files

• Pin Constraints File (.xml)
• Repack Design Constraints (.xml)
  • Pin constraint
  • Ignore net
• Architecture Bitstream (.xml)
• Fabric-dependent Bitstream
  • Plain text (.bit)
  • XML (.xml)
• Bitstream Setting (.xml)
  • pb_type-related Settings
  • Default Mode Bits-related Settings
  • Interconnection-related Settings
  • Clock Routing-related Settings
  • non_fabric-related Settings
  • overwrite_bitstream-related Settings
• Fabric Key (.xml)
  • Configurable Module
  • 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)
• Clock Network (.xml)
  • General Settings
  • Clock Network Settings
  • Clock Spine Settings
  • Intermediate Driver
  • Switch Point Settings
  • Tap Point Settings
• Fabric I/O Naming (.xml)
  • Syntax
  • Example
• Fabric Module Naming (.xml)
  • Syntax
• Tile Organization (.xml)
  • Syntax
• Fabric Pin Physical Location File (.xml)
• Fabric Hierarchy File (.yaml)
• Reference File (.yaml)
• Unique Blocks (.xml)
  • Configurable Block
  • Configurable Instance