iMPACT
PROM File Formatter Storage Targets
The PROM File Formatter can generate PROM files for these storage targets:
  • Xilinx Flash/PROM
    Select this if your FPGAs configure from one or more Xilinx® serial PROMs, typically using a Master-Serial configuration scheme.
  • Non-Volatile FPGA
    • Spartan3AN
      If you are targeting the Spartan®-3AN non-volatile FPGA device, select this storage device type.
  • SPI Flash
    The PROM File Formatter can generate PROM files for SPI Flash devices that can be used in one of these modes:
    • Configure Single FPGA
      If you are targeting any 3rd party supplied SPI PROM, select this storage device type.
    • Configure MultiBoot FPGA
      If you are targeting any 3rd party supplied SPI PROM and will use it in MultiBoot mode, select this storage device type.
      MultiBoot describes the ability of the FPGA to load from one of several configuration images stored in the PROM. For more information on MultiBoot behavior and design methodology, please refer to the Configuration User Guide for the FPGA used in your design.
      SPI Flash MultiBoot is available for these Xilinx FPGAs.
  • BPI Flash
    The PROM File Formatter can generate PROM files for BPI Flash devices that can be used in one of these modes:
    • Configure Single FPGA
      If you are targeting a Xilinx XCF128X BPI Flash PROM or any 3rd party supplied BPI PROM, select this storage device type.
    • Configure MultiBoot FPGA
      If you are targeting a Xilinx XCF128X BPI Flash PROM or any 3rd party supplied BPI PROM and will use it in MultiBoot mode, select this storage device type.
      MultiBoot describes the ability of the FPGA to load from one of several configuration images stored in the PROM. For more information on MultiBoot behavior and design methodology, please refer to the device-specific FPGA Handbook for your design.
      BPI Flash MultiBoot is available for these Xilinx FPGAs.
    • Configure from Paralleled PROMs
      Select this if you will configure the FPGA using two Xilinx BPI Flash storage devices operating in parallel. This method of configuration is used if the FPGA has a data bus wider than the data bus of either of the BPI Flash storage devices. As an example, two 16–bit wide BPI Flash storage devices can be used side-by-side to create a 32–bit wide memory interface.
  • Generic Parallel PROM
    Select this if you are using a microprocessor or other device to read from a Parallel PROM and load a chain of Xilinx FPGAs.

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