STACK EQU 1FH BOTTOM EQU 00H TOP DATA 3DH GRAPH EQU 20H OUT EQU 21H N DATA 3EH K DATA 3FH TST: MOV SP,#5FH MOV DPTR,#GRA MOV P2,#GRAPH MOV R0,#0 MOV R2,#0A0H CPY: CLR A MOVC A,@A+DPTR MOVX @R0,A INC DPTR INC R0 DJNZ R2,CPY MOV P2,#GRAPH MOV R0,#0 MOVX A,@R0 JZ STOP INC A MOV N,A MOV K,#1 TST1: MOV DPH,#OUT MOV DPL,#0 MOV R2,#0 CLR A CLEAR: MOVX @DPTR,A INC DPTR DJNZ R2,CLEAR MOV P2,#GRAPH MOV R0,#0 MOV DPH,#OUT MOV DPL,#0 MOVX A,@R0 MOVX @DPTR,A MOV R7,A INC R7 INC DPTR LCALL SETNULL MOV R0,#10H CLRF: CLR A MOVX @R0,A MOV A,#10H ADD A,R0 MOV R0,A JNZ CLRF MOV A,K LCALL DFS INC K MOV A,K CJNE A,N,TEST1 STOP: LJMP STOP ;出发点为1时的遍历顺序：ABCDEFGHI ;出发点为2时的遍历顺序：BAHGEDCFI ;出发点为3时的遍历顺序：CBAHGEDFI ;出发点为4时的遍历顺序：DCBAHGEFI ;出发点为5时的遍历顺序：EDCBAHGFI ;出发点为6时的遍历顺序：FCBAHGEDI ;出发点为7时的遍历顺序：GEDBCAHIF ;出发点为8时的遍历顺序：HABCDEFGI ;出发点为9时的遍历顺序：IBAHGEDCF DFS: MOV R2,A MOV R0,A MOVX A,@R0 MOVX @DPTR,A INC DPTR MOV A,R0 SWAP A MOV R1,A MOV A,#0FFH MOVX @R1,A SEARCH: INC R1 MOV A,R1 XRL A,R7 ANL A,#0FH JZ DFSEND MOVX A,@R1 JZ SEARCH MOV A,R1 ANL A,#0FH SWAP A MOV R0,A MOVX A,@R0 JNZ SEARCH MOV A,R1 LCALL DPUSH ANL A,#0FH LCALL DFS LCALL DPOP MOV R1,A LJMP SEARCH DFSEND: RET SETNULL: MOV A,#BOTTOM MOV TOP,A RET DPUSH: INC TOP PUSH DPH PUSH DPL MOV DPH,#STACK MOV DPL,TOP MOVX @DPTR,A POP DPL POP DPH RET DPOP: PUSH DPH PUSH DPL MOV DPH,#STACK MOV DPL,TOP MOVX A,@DPTR DEC TOP POP DPL POP DPH RET ;2000H: 09 41 42 43 44 45 46 47 48 49 ;2010H: 00 00 01 00 00 00 00 00 01 00 ;2020H: 00 01 00 01 00 00 00 00 00 01 ;2030H: 00 00 01 00 01 00 01 00 00 00 ;2040H: 00 00 00 01 00 01 00 00 00 00 ;2050H: 00 00 00 00 01 00 01 01 00 00 ;2060H: 00 00 00 01 00 01 00 01 00 01 ;2070H: 00 00 00 00 00 01 01 00 01 00 ;2080H: 00 01 00 00 00 00 00 01 00 01 ;2090H: 00 00 01 00 00 00 01 00 01 00 GRA: DB 09H,41H,42H,43H DB 44H,45H,46H,47H DB 48H,49H,00H,00H END