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Altera_Forum
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11 years ago

Two x NIOS II boot from EPCQ in Quartus 13.1

Hello, It seems that there are a bug in Quartus software for programming the EPCQ. The following workaround (http://www.altera.com/support/kdb/solutions/rd11192013_118.html) provided by Al...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Actually, I did not find a solution for this issue. Altera provided a document for advanced booting

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0cciqfjaa&url=http%3a%2f%2fwww.altera.com%2fliterature%2fan%2fan458.pdf&ei=wgdsu5z0hsjnygo5yogqcw&usg=afqjcnhanm83b3x0wijnzg_ktbqwecojow&sig2=2wdsw_580gm8hp5czcxjoa&bvm=bv.71778758,d.bgq

However I found that EPCS is not supported in thier advanced boot example.

In principle, one CPU should hold the second CPU in Reset mode till the first CPU is programmed

then the first CPU can release the reset pin of the second CPU to let it boot up

what is not achieved is writing the hex file on a specific address in EPCS and let the second CPU boot from it