Attention, please:
	A.if need Psram Simulation Model, please contact to Gowin FAE
    	B.add Psram Simulation Model Folder 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. if you reconfig the ip parameters,which reload the psram_memory_interface.ipc and re-generator. 
	   please attention bits width of the psram_syn_top.v ,psram_test.v and tb.v file. for example, in the tb.v:
	   	O_ck, O_ck_n, IO_rwds, IO_dq, O_reset, O_cs_n

	   int the psram_syn_top.v file:
		O_psram_cn,O_psram_ck_n,IO_psram_rwds,IO_psram_dq,O_psram_reset_n,O_psram_cs_n,
		wr_data,rd_data,addr,data_mask
	   in the psram_test.v file:
		rd_data,wr_data,addr,data_mask

	F. for simulation, please in the../../project/src/psram_syn_top.v file,open below:
	   `define SIM
	G. for quickly simulation, please select "Simulation",which in the IP Core Generator->PSRAM Memory Interface GUI

../project/src/*.v : 
                        test design for PSRAM ip
../project/src/psram_memory_interface/psram_memory_interface.vo :
                        PSRAM IP
../tb/tb.v :
                        testbench for simulation
prim_sim.v:             simulation library, get from installation path of Gowin YunYuan software 
