΢»úÔÀíÓë½Ó¿Ú¼¼Êõ£¨µÚ¶þ°æ£© Ç廪´óѧ³ö°æÉç
(1) MOV AX, 1800H (2) MOV AX, BX
(3) MOV BX, [1200H] (4) MOV DX, 1100[BX] (5) MOV [BX][SI], AL (6) MOV AX, 1100[BX][SI] ´ð£º(1) (AX)=1800H (2) (AX)=0100H (3) (BX)=4C2AH
(4) (DX)=4C2AH (5) (20102H)=00H (6) (AX)=65B7H
4. д³öʵÏÖÏÂÁмÆËãµÄÖ¸ÁîÐòÁС£
(1) Z=W+(X+Z) (2) Z=W-(X+6)-(R+9) ´ð£º(1)
MOV AX, Z
ADD AX, X ADD AX, W MOV Z, AX (2) MOV AX, W ADD X, 6 SUB AX, X ADD R, 9 SUB AX, R MOV Z, AX
5. ÈôÔÚÊý¾Ý¶ÎÖдÓ×Ö½Ú±äÁ¿TABLEÏàÓ¦µÄµ¥Ôª¿ªÊ¼´æ·ÅÁË0~15µÄƽ·½Öµ£¬
ÊÔд³ö°üº¬XLATÖ¸ÁîµÄÖ¸ÁîÐòÁвéÕÒN£¨0~15£©ÖеÄij¸öƽ·½Êý¡£ ´ð£ºLEA BX, TABLE MOV AL, CL XLAT
6. д³öʵÏÖÏÂÁмÆËãµÄÖ¸ÁîÐòÁС£
(1) Z=(W*X)/(R+6) (2) Z=((W-X)/5*Y)*2 ´ð£º(1) MOV AX, W IMUL X ADD R, 6 IDIV R
9
΢»úÔÀíÓë½Ó¿Ú¼¼Êõ£¨µÚ¶þ°æ£© Ç廪´óѧ³ö°æÉç
MOV Z, AX (2) MOV AX, W SUB AX, X MOV BL, 5 IDIV BL CBW IMUL Y MOV BX, 2 IMUL BX MOV Z, AX
7. ¼Ù¶¨(DX)=1100100110111001B,CL=3£¬CF=1, ÊÔÈ·¶¨ÏÂÁи÷ÌõÖ¸Áîµ¥¶ÀÖ´ÐкóDXµÄÖµ¡£
(1) SHR DX, 1
(2) SHL DL, 1
(3) SAL DH, 1 (4) SAR DX, CL
(5) ROR DX, CL (6) ROL DL, CL (7) RCR DL, 1 (8) RCL DX, CL ´ð£º(1) (DX)=0110 0100 1101 1100B (2) (DX)=1100 1001 0111 0010B
(3) (DX)=1001 0010 1011 1001B (4) (DX)= 1111 1001 0011 0111B (5) (DX)= 0011 1001 0011 0111B (6)(DX)= 0100 1101 1100 1110B (7) (DX)= 1110 0100 1101 1100B (8) (DX)= 1001 0011 0111 0011B
8. ÒÑÖª³ÌÐò¶ÎÈçÏ£º
MOV AX, 1234H MOV CL, 4 ROL AX, CL DEC AX MOV CX, 4 MUL CX INT 20H
ÊÔÎÊ£º£¨1£©Ã¿ÌõÖ¸ÁîÖ´Ðкó£¬AX¼Ä´æÆ÷µÄÄÚÈÝÊÇʲô£¿£¨2£©Ã¿ÌõÖ¸ÁîÖ´Ðкó£¬CF£¬SF¼°ZFµÄÖµ·Ö±ðÊÇʲô£¿£¨3£©³ÌÐòÔËÐнáÊøºó£¬AX¼°DX¼Ä´æÆ÷µÄֵΪ¶àÉÙ£¿
10
΢»úÔÀíÓë½Ó¿Ú¼¼Êõ£¨µÚ¶þ°æ£© Ç廪´óѧ³ö°æÉç
´ð£ºMOV AX, 1234H (AX)=1234H, CF=0£¬SF=0£¬ZF=0 MOV CL, 4
ROL AX,CL (AX)=2341H,CF=1£¬SF=0£¬ZF=0 DEC AX (AX)=2340H,CF=1£¬SF=0£¬ZF=0 MOV CX,4
MULL CX (AX)=8D00H, CF=0£¬SF=1£¬ZF=0
INT 20H
½áÊøºó£¬(DX)=0000H, (AX)=8000H
9. ÊÔ·ÖÎöÏÂÁгÌÐò¶Î£º
ADD AX, BX JNC L2 SUB AX, BX JNC L3 JMP SHORTL5
Èç¹ûAX£¬BXµÄÄÚÈݸø¶¨ÈçÏ£º
AX BX (1) 14C6H 80DCH (2) B568H 54B7H
ÎʸóÌÐòÔÚÉÏÊöÇé¿öÏÂÖ´Ðк󣬳ÌÐòתÏòºÎ´¦¡£ ´ð£º£¨1£©×ªµ½L2´¦ £¨2£©×ªµ½L3´¦
11
΢»úÔÀíÓë½Ó¿Ú¼¼Êõ£¨µÚ¶þ°æ£© Ç廪´óѧ³ö°æÉç
ϰÌâ4
1£®ÏÂÁÐÓï¾äÔÚ´æ´¢Æ÷ÖзֱðΪ±äÁ¿·ÖÅä¶àÉÙ×ֽڿռ䣿²¢»³ö´æ´¢¿Õ¼äµÄ·ÖÅäͼ¡£
VAR1 DB 10£¬2
VAR2 DW 5 DUP£¨£¿£©£¬0
VAR3 DB ¡®HOW ARE YOU£¿¡¯£¬3 DUP£¨1£¬2£© VAR4 DD -1£¬1£¬0 ´ð£º×ֽڿռ䣺
VAR1£º2£» VAR2£º12£» VAR3£º13£» VAR4£º8¡£ ´æ´¢¿Õ¼äµÄ·ÖÅäͼ£º
2£®¼Ù¶¨VAR1 ºÍVAR2 Ϊ×Ö±äÁ¿£¬LAB Ϊ±êºÅ£¬ÊÔÖ¸³öÏÂÁÐÖ¸ÁîµÄ´íÎóÖ®´¦¡£ £¨1£©ADD VAR1£¬VAR2 £¨3£©JMP LAB[CX]
£¨2£©SUB AL£¬VAR1 £¨4£©JNZ VAR1 £¨6£©SHL AL£¬ 4
£¨5£© MOV [1000H]£¬100
´ð£º(1) ÔÚËãÊõÔËËãÖ¸ÁîÖУ¬Á½¸ö²Ù×÷Êý²»ÄÜͬʱΪ´æ´¢Æ÷Ѱַ·½Ê½ (2) AL Ϊ×Ö½Ú£¬VAR1 Ϊ×Ö±äÁ¿£¬×Ö³¤²»ÏàµÈ£»
(3) ´íÎó1£º¼Ä´æÆ÷Ïà¶ÔѰַ·½Ê½£¬Ö»ÄÜʹÓûùÖ·»ò±äÖ·¼Ä´æÆ÷£¬²»ÄÜʹÓÃCX¼Ä´æÆ÷¡£
´íÎó2£º»ã±à¸ñʽ´íÎó£¬ÎÞ·¨ÅжÎÊǶÎÄÚ×ªÒÆ»¹ÊǶμä×ªÒÆ¡£ (4) תÏòµØÖ·Ó¦Îª±êºÅ£¬²»ÄÜÊDZäÁ¿£» (5) Ä¿µÄ²Ù×÷ÊýµÄÀàÐͲ»È·¶¨£»
12