1、現象：
在Block Design 中添加AXI BRAM ，如圖：
點擊validate design 後，提示如下報錯：
ERROR: [axi_bram_cntlr-1] Port-A interface property <CONFIG.READ_WRITE_MODE> is not defined.
ERROR: [Common 17-39] 'send_msg_id' failed due to earlier errors.
ERROR: [BD 41-1273] Error running post_propagate TCL procedure: ERROR: [Common 17-39] 'send_msg_id' failed due to earlier errors.
::xilinx.com_ip_axi_bram_ctrl_4.0::post_propagate Line 79
2、解決方法：
