I found some very old AT45DB161E SO8 and made "flash adapter" for the DIPSY-EasyPCB to test standalone boot from flash. Lattice Diamond did have this device in the Flash selection list, but was not able to write the flash.
So I did give a try to DIPSY SPI Tool what I did finish a few hours later - there was from old times some SPI functions included.
To my big surprise DIPSY SPI Tool, well it did write the flash, and voila:
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I have made my own SPI Flash writer (working on Raspberry Pi so far), it supports the chips that I have as samples, they are listed in http://archives.yasep.org/yasep2014/C/src/SPI_Flash_chips.h (all are 128KB to 16MB, 24 bits addresses)
Are there some in this list that are supported by the ice40 of the DIPSY ?
Are you sure? yes | no