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Altera_Forum
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15 years ago

Cyclone III and EPCS4

Hi, i am trying to start Cyclone III with EPSC4. I write VHDL code wich toggles one of FPGA pins, but nothing happens, Quartus is programming the flash device - programmer says that everything is ok,...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

yes it is, sory i say wrong, on CONF_DONE i have about 700mV and 630Hz 200mV peaks ;s

EDIT: new symptome, at beginning system connects only 3.3V bus, when it is done CONF_DONE looks like in attachment, then 3.3V is off, and then all supplies are on togheter, in these last step - there is everywhere 0V (CONF_DONE nSTATUS nCE)