Unable to write on SDRAM on DE0- Nano Cyclone IV E - waitrequest

Hi,

The simulation plots you attached are so tiny it's impossible to read them.

Good idea to diff the compilation output, I wish I had thought of doing that before, Quartus generates so much output.

I also diffed the files and I see two other differences besides the timing issues:

ko.txt:

Warning (10036): Verilog HDL or VHDL warning at de0_nano.vhd(378): object "step" assigned a value but never read

ok.txt:

Warning (10036): Verilog HDL or VHDL warning at de0_nano.vhd(320): object "i2s_rx_data_valid" assigned a value but never read

That warning about i2s_rx_data_valid never being assigned a value sounds fishy to me.