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	INITIALIZATION OF DATA SEGMENT
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

Updated
Oct 25, 2014
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