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                                      halt<=1'b1;    //置停機(jī)標(biāo)志                                     end                                     G0:             //G0                                      begin                                              rd<=1'b1;                                         ip<=ip+3'd5;   //指令指針加5                                                                             end                                     G1:           //G1                                     begin                                                                           rd<=1'b1;                                                     ip<=ip+12'd5;        //指令指針加5                                           end                                                                                 endcase                          end           S1:                                                  //計(jì)算周期                           begin                 rd<=1'b1;                                    //下一狀態(tài)讀無(wú)效                 state<=S2;                                               case(opcode)                         G0:                                 //執(zhí)行G0                         //執(zhí)行G0                         G1:                                //執(zhí)行G1                         //執(zhí)行G1; 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