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                       endcase                 end             S2:                                                  //準備讀指令                begin                      state<=S3;                 rd<=1'b0;                                    //設置度信號                 addr<=ip;                                    //指令地址                                  end         S3:                                                  //讀寫數據周期               begin                      state<=S4;                 opcode<=rddata;                         rd<=1'b0;                                    //設置度信號                  addr<=addr+3'd1;                                    //x1                                          end         S4:                                                  //讀寫數據周期                begin                      state<=S5;                 opx1=rddata;                         rd<=1'b0;                   addr<=addr+3'd1;                                //y1                      end         S5:                                                  //讀寫數據周期                begin                      state<=S6;                 opy1=rddata;                                           rd<=1'b0;                   addr<=addr+3'd1;                             //x2                             end         S6:                                                  //讀寫數據周期                  begin                      state<=S0;                 opx2=rddata;                           rd<=1'b0;                                    //設置度信號                 addr<=addr+3'd1;                                 //y2             end                  endcase endmodule 代碼形式為:G1X1Y1X2Y2為連續(xù)從外部RAM讀入5個字,第一個字是操作碼,第二個字是X1,第二個字是Y1,第二個字是X2,第二個字是Y2. //它們之間是不是需要延時?,是不是用阻塞賦值? //這段程序經過高手確定沒問題以后,才能繼續(xù)了. //呵呵,需要安裝CPLD模擬環(huán)境了,我還不會,現學.:) //請高手指教，歡迎拍磚

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