Attention, please: 
	A.if need Psram Simulation Model, please contact to Gowin FAE
    	B.add Psram Simulation Model to path: ../../tb/sim_model
    	C.instantiation Psram Simulation Model in tb.v file
	D.open /simulation/modesim_sim/compile.f file,
	  then cancel note,below:
           #../../tb/sim_model/W9550D8MKY.v
	   #+incdir+../../tb/sim_model/
	E. for quickly simulation, in the ../../project/src/psram_memory_interface/temp/PSRAM/psram_param.v file,
	   add below:
	   `define SIM

1.Run Command
    method 1: do cmd.do , in the Transcript windows of the Modesim Tool
    method 2: vsim -do cmd.do , in the Terminal of the Linux 

2.Files Introduction

    prim_sim.v                  :
                                simulation library, get from installation path of gowin yunyuan software tool
    cmd.do                      :
                                modesim  do(command) file
    compile.f                   :
                                modesim compile design file

