Program for searching for a number or character in a string for 8086
Aim:
To find whether the given byte is in given string or not & find its relative address
Software required:
TASM TURBO ASSEMBLER
Program:
ASSUME CS : CODE, DS : DATA CODE SEGMENT MOV AX, DATA MOV DS, AX LEA SI, LIST XOR BL, BL MOV CL, COUNT MOV AL, BYT BACK: CMP AL, [SI] JZ SKIP INC BX INC SI LOOP BACK SKIP: HLT CODE ENDS DATA SEGMENT LIST DB 19H, 99H, 45H, 46H, 34H COUNT DB 05H BYT DB 45H DATA ENDS END
List file:
ADDRESS | OPPCODE | OPERATIONS | COMMENTS |
---|---|---|---|
0000 | B8974E | MOV AX,4E97 | INITIALIZATION OF DATA SEGMENT |
0003 | 8ED8 | MOV DS,AX | |
0005 | BE0000 | MOV SI,[0000] | THE VALUE [0000] IS MOVED TO SI |
0008 | 32DB | XOR BL,BL | THE REGISTER BL IS CLEARED |
000A | 8A0E0500 | MOV CL,[0005] | THE VALUE [0005] IS MOVED TO CL |
000E | A00600 | MOV AL,[0006] | THE VALUE [0006] IS MOVED TO AL |
0011 | 3A04 | CMP AL,SI | COMPARE THE VALUE OF SI WITHAL |
0013 | 7404 | JE 0019 | JUMP TO 0019 |
0015 | 43 | INC BX | INCREMENT BX BY ONE |
0016 | 46 | INC SI | INCREMENT SI BY ONE |
0017 | E2F8 | LOOP 0011 | LOOP BACK TO 0011 |
0019 | F4 | HLT | END OF THE PROGRAM |
Flow Chart:
Result:
Given data:
N = 19H, 99H, 45H, 46H, 34H BYTE = 45H
Flags:
INITIALLY: C=0,Z=0,S=0,O=0,P=0,A=0,I=1,D=0 AFTER EXECUTION: C=0,Z=1,S=0,O=0,P=1,A=0,I=1,D=0
Output:
RES: 45H ADDRESS: BX----0002
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UpdatedOct 25, 2014
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Views29,269
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