681 - LatticeECP2: How to setup LatticeECP2 dual boot application to load the golden bitstream instead of primary bitstream?

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• 1663 - MachXO2: How can I force to boot from the “golden boot” image in the external SPI Flash when using the dual boot feature?

  The MachXO2 has a dual boot feature that works in an automatic mode. If the image loaded from the internal flash is found to have an issue (CRC error), or if the internal flash is erased, then the part will automatically try to load the golden image ...

• 1834 - MachXO2: When using the device in Dual-Boot configuration mode, what address should the 'Golden' bitstream image (.bit file) be stored in the external Slave-SPI device?<br>

  The 'Golden' bitstream image must be located starting at SPI address 0x010000. If using Lattice ispVM System 18.0 or later, the starting address for the bitstream is entered in the "Starting Address" box of the 'SPI Serial Flash Device' dialog box. ...

• 1421 - How do I trigger the Dual Boot function for MACHXO2 device?<br>

  The Dual Boot feature is supported through the Master SPI Mode(MSPI) for MACHXO2 device. During the device configuration at power up or toggling of PROGRAMN pin, any of following situations will trigger a dual boot event. A bitstream Cyclic ...

• 7044 - MachXO2/XO3: How to have successful dual-boot with SPI flash with MachXO2/MachXO3 devices?

  To have successful dual-boot for MachXO2/MachXO3 please change CRC settings of the generated bitstream of Lattice Diamond Software using the Deployment tool. See below for the steps: 1.Open Deployment Tool then select File Conversion and Bitstream:

• 334 - How can user determine which image is loaded into FPGA if the primary and golden images are identical for dual boot?

  No. The only possible way to implement this is to use an IO pin to identify the image. For example, the user's FPGA designs could include logic to drive this pin to different logic levels for the different images. This pin is part of the user design ...