I use an old Terasic DE1 board with Cycolne II. Onthis bord have SDRM A2V64S40CTP, SRAM IS61WV25616BLL, and Flash S29AL032D70TFIO4). I work with QuartusII 13.1 I manage to creat SoC with internal memory. All is ok and run fine Now I want to use external memory but I dont know what is the good memory interfce I can add and configure on Qsys. Where can I found the good interfaces ?