6830 - MachXO5D: How is USERCODE stored in MachXO5 JEDEC file?
The MachXO5 JEDEC file should not have the U Field (USERCODE) since the MachXO5 Flash didn't support it. The only USERCODE is supported for MACHXO5 is the SRAM USERCODE, which embedded into the bitstream and config data of the JEDEC files.