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Altera_Forum
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15 years ago

Fail to Boot Software from EPCS16

Hi, I have made a simple custom system with a EP3C16Q240, EPCS16,SDRAM,an AS connector,a JTAG connector and a 50Mhz system clock in which MSEL[0:2]=[010],VCCIO=3.3V.The SOPC contains a cpu with re...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I've got it!

The problem was not the fpga extra hardware (MSEL and all was ok) nor the epcs_controller in nios.

The problem was the top-level pin assignements in cyclone III. I was using DATA0, DCLK, nCSO and ASCO signals but they weren't well asigned to fpga's configuration pines.

Now I can access ecps via nios and i can use flash-programmer.

Thank you very much for your help.