this a pack include source code for quartus 2. It is an implementation of the LC2. The LC-2 computer is described in Introduction to Computing Systems from Bits & Gates to C & Beyond by Yale Patt and Sanjay Patel, McGraw Hill, 2001. The LC2 mode

V4系列FPGA控制DDR2器件的中文介绍-V4 Series FPGA device in Chinese control of DDR2 Introduction