Honored Contributor
Honored ContributorGo to Spansion's FL site
http://www.spansion.com/products/memory/serial-flash/pages/spansion%20fl.aspx click on the "Technical Documents" link and scroll down to "Connecting Spansion SPI Serial Flash to Configure Altera FPGAs" http://www.spansion.com/support/application%20notes/configuring_altera_fpgas_via_spi_flash_an.pdf I think that app note has the details, but I did not re-read it, so ask again if it does not :) --- Quote Start --- Are you sure the ID check option is for the FPGA boot or for the JTAG debugger when programs the jic file? --- Quote End --- Its part of the initial SPI flash byte-stream instructions. I suspect the Cyclone V performs a few instructions, reads a header, and then decides whether or not to check the previously read ID. Once you figure out how to toggle the check ID setting, you can compare the RBFs and you'll see the byte that is different. The SRunner program has lots of the flash internals documented, i.e., its the documentation for the "undocumented" features :) You can also search the forum for threads regarding using Spansion flash, I recall it has been discussed before. For example, some of the DE0-nano boards shipped with Spansion flash and users were asking how to use it ... I think they got it figured out. Cheers, Dave
