Problem editing component SOPC

Hi,

I use ddr2 sdram controller in SOPC Builder and there is a grey dot but it works fine. May be you could have a path problem in your project, check the library position.

Use this controller without the Nios II it is quite difficult, you have to write a vhdl or verilog controller to provide the correct signal to sdram controller. Instead read/write from/to sdram with Nios II it is very easy, for example:

to read:

var = *((volatile alt_u8 *)DDR2_SDRAM_ADDRESS_BASE + offset)

to write:

*((volatile alt_u8 *)DDR2_SDRAM_ADDRESS_BASE + posizione) = var

Best regards

Luca