Reading data from EPCS memory via USB blaster

In addition to that (I think the OP was asking about reading, not writing):

- For reading via JTAG, you can also make a .jic file (just as if you would want to write - with "Convert programming files"), but than select the "Examine" checkbox instead of "Program" in the Quartus programmer. The bad thing is that the read back data can only be stored as .jic file again. Maybe it is possible to make some sense of the contents of the .jic-file with a hex-editor... You can also create .jic-file from hex-files (instead or in addition to .sof data) and verify against a .jic-file and you can also do blank checks, so maybe this is of some help...

- I think via the Active Serial header it is possible to examine and store hex-files, but I am not sure and have no hardware to test (since .jic, this is quite out-dated...).

BTW: A frequent problem when programming config data "by hand" is the ordering of bits in the bytes, they often need to be swapped... (i.e. b7 = b0, b6 = b1, etc.)

And: Of course you could also use an Entner Electronics EEBlaster ;-)

Regards,

Thomas

www.entner-electronics.com - Home of EEBlaster (EUR 49,-)