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To create your FWU file, you shall

• replace the existing step4_user\fpga.bin with the latest fpga.bin (once per design)

• zip the 3 files

• rename the zip file extension to fwu

• upload the file using DEWESoft Firmware Upgrade Tool.

Bootload.ini file

The step4_user\Bootload.ini file defines some module start-up options. Version 1.0 of Bootload.ini has the following structure:

• [Info] – information section (do not edit this section)

  • Version – Bootload.ini file format version

  • DeviceType – 3 stands for current device type

• [Settings]: settings section

  • FPGABitSwap – see Xilinx UG332: Spartan-3 Generation Configuration User Guide, chapter SelectMAP Data Ordering (default = 1 = do bit swapping)

  • FPGAPowerON – value of FX2_PS_EN after SPI Flash memory programming ( FX2_PS_EN Slide Switch) (default = 1 = power on after upgrade)

usb.bin file

The step4_user\usb.bin file contains the firmware to be written in the large EEPROM of the EZ-USB FX2LP USB microcontroller and loaded at module start-up to implement the DEWESoft instruction set.