微机原理与接口技术课后答案周锋.pdf

1 2 1.8086CPU16CPU 168086CPU 8086CPU16 16 2.8086CPU Bus Interface UnitBIUExecution UnitEU BIUEUBIU CPU 3.8086CPU816 8086 AXBXCXDX168 80868 4.8086CPUIP IP IPCS 8086IP 5. CFPFAFZFSFOF CF CF=1CF=0 PF1 PF=1PF=0 AF4 AF=1AF=0 ZFZF=1ZF=0 SF OF OF=1OF=0 6.8 8 8 IP SF 2 190H+3CH23CH- 90H37DH- 9CH 1CCHCF=0 PF=1AF=0 ZF=0 SF=1 OF=0 CCHCF=0 PF=1AF=0 ZF=0 SF=1 OF=0 2ACHCF=1 PF=1AF=0 ZF=0 SF=1 OF=1 ACHCF=1 PF=1AF=0 ZF=0 SF=1 OF=0 3E1HCF=1 PF=1AF=0 ZF=0 SF=1 OF=1 E1HCF=1 PF=1AF=0 ZF=0 SF=1 OF=0 7.10000H 22Bb0 12H1004H- 10 420H12345678H0 1 22Bb0 10 000H 02H32H42H62H30H 2 12H1004H- 10 10000H12H04HFFH00H 10001H00H10HFFH00H 3 420H12345678H0 10001H20H78H00H 10002H04H56H00H 10003H00H34H00H 10004H00H12H00H 8.8086CPU 8086CPU2020bit8086 20 2B=1MB 9.8086 808616 16 2=64KB80861616 010H 10. 12H1004H- 1012H1004H- 10 10000H12H04HFFH00H10000H12H04HFFH00H 10001H00H10HFFH00H10001H00H10HFFH00H 420H12345678H0420H12345678H0 10001H20H78H00H10001H20H78H00H 10002H04H56H00H10002H04H56H00H 12H1004H- 1012H1004H- 10 10000H12H04HFFH00H10000H12H04HFFH00H 10001H00H10HFFH00H10001H00H10HFFH00H 420H12345678H0420H12345678H0 10001H20H78H00H10001H20H78H00H 10002H04H56H00H10002H04H56H00H 10003H00H34H00H10003H00H34H00H 10004H00H12H00H10004H00H12H00H 20 3 11.8086CPU 12. 8086 BIU4CSDSSSESCPU4 4 13.CS=7F00HIP=017CH CS*10H+IP=7F00H*10H+017CH=7F000H+017CH=7F17CH 14.DS=5C00HES=5D10H63654H DSES DSIP=63654H- DS*10H=63654H- 5C000H=7654H ESIP=63654H- ES*10H=63654H- 5D100H=6554H 15.I/O8086CPU I/O 8086I/O 16 2=64KB16 808616I/O 16.Intel3216 116163216 8 2IP1632EIP 316FSGS 4Flags1632EFLAGS 321616 32Intel 17.32 180868086 2 DSDS*10H=63654H- 5C000H=7654H*10H=63654H- 5C000H=7654H =63654H- ESES*10H=63654H- 5D100H=6554H*10H=63654H- 5D100H=6554H 000H+017CH=7F17CH000H+017CH=7F17CH 63654H63654H *10H=63654H- 5C000H=7654H*10H=63654H- 5C000H=7654H *10H=63654H- 5D100H=6554H*10H=63654H- 5D100H=6554H 80868086I/O I/OI/O 16 4 3808680868086 8086168086 32 18. 4KB 3 1. 2. 3. 4. MOV AX420H MOV BXSI MOV AX90 MOV DI+90AH MOV ALBP+SI+20 1)MOV AX, 420H 2)MOV BX, SI 3)MOV AX, 90 4)MOV DI+90, AH 5)MOV AL, BP+SI+20 1)MOV AX, 420H 5 2)MOV BX, SI 3)MOV AX, 90 4)MOV DI+90, AH 5)MOV AL, BP+SI+20 5. MOV AXSI+20H MOV AL1000H MOV AXES:BXSI MOV AXBP+1234H 1DS2DS3ES4SS 6.BX=2010HDI=0FFF0HBP=420H MOV AX2345H MOV AXBX MOV AXES:DI+200 MOV AXDS:BP+DI MOV AXBX+DI+114H 1)MOV AX, 2345H2345H 2)MOV AX, BX2010H 3)MOV AX, ES:DI+2000B8H 4)MOV AX, DS:BP+DI410H 5)MOV AX, BX+DI+114H2114H 7.MOV 1MOVALU 2MOV CS 8.8086 80868086 SSSPSPSS SP0SPSP 9.SS=0FF00HSP=00B0H8086H0F20HPUSH POP PUSH |0FF00HSS 1)MOV AX, 2345H2345H1)MOV AX, 2345H2345H 2)MOV AX, BX2010H2)MOV AX, BX2010H 3)MOV AX, ES:DI+2000B8H3)MOV AX, ES:DI+2000B8H 4)MOV AX, DS:BP+DI410H4)MOV AX, DS:BP+DI410H 5)MOV AX, BX+DI+114H2114H5)MOV AX, BX+DI+114H2114H ALUALU 6 |20H|0FFACHSP |0FH|0FFADH |86H|0FFAEH |80H|0FFAFH POP |0FF00HSS |86H|0FFAEHSP |80H|0FFAFH 10.BXSICX LEACXBX+SI 11.CFZFOFSF MOV BX40ABH ADDBL09CH MOV AL0E5H CBW ADDBHAL SBBBXAX ADCAX20H SUBBH9 MOV BX40ABH;40ABHBX ADDBL09CH;9CHABH47HBLCF=1ZF=0 ;OF=1SF=0 MOVAL0E5H;E5HAL CBW;ALAXFFE5H ADDBHAL;ALE5HBH40H25HBH ;CF=1ZF=0OF=1SF=0 SBBBXAX;BX2547HAXFFE5H ;CF=12561HBXCF=1ZF=0OF=1SF=0 ADCAX20H;AXFFE5H20HCF=10006H ;AXCF=1ZF=0OF=1SF=0 SUBBH9;BH25HF7H1BHBH CF=1 ;ZF=0;OF=1SF=0 12. 8168AL OFOF 40ABH 09CH;9CH9CH 7 816AX16AX 1632DX:AX816AX 88AL8AH1632DX:AX 1616AX16DX 13.DL MOVALDL IMULDL MULDL 14. DHBH DI51 AX031,7913150 BX2591 CX16111 AX029130 DX1411140 1MOVBHF8H ANDBHDH 2ORDIFFF8H 3ORAX000FH XORAX0380H ANDAX1FFFH 4MOVDXBX TESTDX0004H;ZF=021 TESTDX0020H;ZF=051 TESTDX0200H;ZF=091 5XOR CX0824H JEYES 6TESTDX0001H;ZF=100 0 0380H0380H 8 TESTDX0002H;ZF=120 TESTDX0200H;ZF=190 TESTDX2000H;ZF=1130 7XOR DX4812H JEYES 15.NOTNEGDXAX NOTNEG NOTAX NOTDX ADDAX1 ADCDX0 16.404922 MOVAX0028H;40AX SHLAX1;AX*2 MOVAX0028H;40AX SARAX1;AX/2 MOVAXFFCFH;- 49AX SHLAX1;AX*2 MOVAXFFCFH;- 49AX SARAX1;AX/2 17. MOV CL4 SHLDXCL MOV BL4H SHLAXCL SHRBLCL AXAX *2 4040AX - 49- 49AX AXAX*2*2 FFCFH; 9 ORDLBL MOVCL4;4CL SHLDXCL;DX*16 MOV BL4H;4HBL SHLAXCL;AX*16 SHRBLCL;BL40 ORDLBL;BL0DL 18.DF STDDF=1CLDDF 19.1000B00H1 20. CSIP CSIP 21. 5ZF CFOFSFPF CMPAX1;AX- 1 JZEqual;ZF=1Equal Equal 22.AXBXCXDX DXCXEXCEED BXAXEXCEED 10 CX=0ZERO BXAXOVERFLOW BXAXNOTBIG DXCXNOTBIG 1CMPDXCX JAEXCEED 2CMPBXAX JGEXCEED 3CMPCX0 JZZERO 4CMPBXAX JOOVERFLOW 5CMPBXAX JLENOTBIG 6CMPDXCX JBENOTBIG 23.1000B00H 1 LEASI0B00H MOVCX100 L1MOVAXSI INCAX MOVSIAX ADDSI2 LOOPL1 24. 11 25.CALLSUB1SUB1JMP PUSHIP JMPSUB1 26.SUB1RETJMP POPBX ;IP JMPBX 27.60H MOVAX,0 MOVES,AX;0 LDSSI,ES:60H*4;*44 ;LDS 28.1CH 0FA00:100H 4 1 1 23 4 1 23 1 2 ; ; 0 12 2 3END END1 ENDEND2END END 4 1B_VAR DB ABCD, 12, 12, 3 DUP (?, 0, 2 DUP ( 1, 2) 2W_VAR DW AB,256, 1, 5 DUP (?, 1, 2) 5 1 23 1 23 6 DATASEGMENT V1DW ? V2DB 16 DUP (?) V3DD ? DSIZE EQU $ V2 DATAENDS V1V2V3DSIZE V10V12 V22V21616V3 18V34422DSIZE$- V222- 2=20 7B1W120 DATAUNION B1DB 20DUP (?) W1 DW 10DUP(?) DATAENDS 8 EVEN 9MOV BX1 V1 13 BIPTR MOVWORDPTR BI,1 10MOV BX, VARMOV BX, OFFSET VARVAR MOVBX, VARVARBX MOVBX, OFFSEVARVARBX 11 VAR DWAB,256, 1, 5 DUP(?, 1, 2) 1VARAX 2VAR1AX 3VAR1BX 4VAR4AL 1MOVAX, OFFSEVAR 2MOVAX, OFFSEVAR+4 3MOVAX, OFFSEVAR+4 4MOV AL, OFFSEVAR+4 12VAR 1XOR BX, SIDI 2SUBSI, 91 3OUT 300H,AL 4JMP DWORD PTR BX 5MOVBX, SS:SP 6TESTAL, 8000H 7CMP BYTE PTR BX, BYTE PTR SI 8ANDVAR, OFFSET VAR 9SUBSI, 1 10ADD BX, SS:VAR 11MOVAX, BX SI 12MOV 25, BL 13SUB CX, $+10 14MOV DS, BP 15MOVAX, BX + VAR 1XORBX,SIDI 2SUBSI,- 91 3OUT300H,AL 4JMPDWORDPTRBX 5MOVBX,SS:SP 6TESTAL,8000H 7CMPBYTEPTRBX,BYTEPTRSI JMP DWORD PTR BXJMP DWORD PTR BX CMP BYTE PTR BX, BYTE PTR SICMP BYTE PTR BX, BYTE PTR SI ANDVAR, OFFSET VARANDVAR, OFFSET VAR ADD BX, SS:VARADD BX, SS:VAR 14 8ANDVAR,OFFSETVAR 9SUBSI,1 10ADDBX,SS:VAR 11MOVAX,BX- SI 12MOV 25,BL 13SUBCX,$+10 14MOV DS,BP 15MOVAX,BX+VAR 13DDVAR1 COUNT DATASEGMENT X DD 0FFFFFFFH XL EQU WORD PTR X XH EQU WORD PTR X+2 COUNT DW 0 DATAENDS STACK SEGMENT STACK DW 100H DUP(?) STACK ENDS CODE SEGMENT ASSUME CS:CODE DS:DATASS:STACK START:MOV AX,DATA MOV DS,AX;DATAAX MOV DX,XL MOV BX,8000H MOV CX,16 XLL:CALL COUNT0;COUNT LOOP XLL MOV DX,XH MOV BX,8000H MOV CX,16 XHH:CALL COUNT0 LOOP XHH MOV AX,COUNT MOV BL,10 DIV BL ADD AL,0;AL ADD AH,0;AH PUSH AX MOV DL,AL ASSUME CS:CODE DS:DATASS:STACKASSUME CS:CODE DS:DATASS:STACK START:MOV AX,DATA MOV DS,AX;DATA ASSUME CS:CODE DS:DATASS:STACKASSUME CS:CODE DS:DATASS:STACK MOV DS,AX;DATAMOV DS,AX;DATA MOV BX,8000H MOV CX,16MOV CX,16 XLL:CALL COUNT0;XLL:CALL COUNT0; LOOP XLLLOOP XLL 15 MOV AH,2 INT 21H POP AX MOV DL,AH MOV AH,2 INT 21H MOV AX,4C00H;DOS INT 21H COUNT0 PROC NEAR;1 MOV AX,DX OR AX,BX;1 CMP AX,DX ; JZ DONE K:SHR BX,1; RET DONE:INC COUNT;COUNT+1 JMP K COUNT0 ENDP CODE ENDS END START 14abc CF1CF0 15String0 DATASEGMENT STR DB “ABCDELP“,0 N EQU $- DATA DATAENDS STACK SEGMENT STACK DW 20 DUP(?) STACK ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START: MOVAX,DATA MOV DS,AX CYCLE: LEABX,STR AGAIN: CMP BYTE PTR BX,0 16 JE EXIT CMP BYTE PTR BX,20H JNE NEXT DELETE: PUSH BX MOV DL,BX+1 MOV BX,DL INC BX CMPBX+1,0 JZ NEXT JMP DELETE NEXT: POP BX INC BX JMPAGAIN EXIT: MOV SI,0 CMPBYTE PTR SI,20H JE CYCLE LEABX,STR COMPARE: CMP BYTE PTR BX,20H JE PRINT INC BX JMP COMPARE PRINT: MOV BX,$ LEADX,STR MOVAH,09H INT 21H MOVAH,07H INT 21H MOVAX,4C00H INT 21H CODE ENDS END START 16Buff2000 N1N2N3 DATASEGMENT SAVE DB 3 DUP(?) 17 NUM DW 100 DUP(?) DATAENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START:MOVAX,DATA MOV DS,AX MOV CX,100 XOR BX,BX XOR DX,DX LEASI,NUM SUB SI,2 NEXT1:ADD SI,2 CMP SI,0 JNZ NZ INC BL ; JMP OK NZ:TEST SI,8000H JNZ N INC DH ; JMP OK N:INC DL ; OK:LOOP NEXT1 MOV SAVE,DH ; MOV SAVE+1,DL MOV SAVE+2,BL MOVAH,4CH INT 21H CODE ENDS END START 17Result45 18 CALL IPRETIP CSIPIPCS 19RET PROC RET 20 18 21 123 22 1ABS(x)=|x| 2F(x)=3x2+ 5x8 3strlen(String)0 23n1NUMFIB(n) RESULT Fibonacci STACKSEGMENT STACK STACK DW 32 DUP(0) STACKENDS DATASEGMENT ADB 8 DUP(0) OBFDB 3,0,3 DUP(0) DATAENDS CODESEG