Assembly Language Programs on array of Hexadecimal numbers

AIM: To write 8086 Assembly Language Program to sorting n-hexadecimal number in ascending order.

Answer:

MODEL SMALL

.STACK 100

.DATA ; Data segment starts

LIST DW 53H, 25H, 02H, 19H ; Array (list) containing 4 elements is initialized.

COUNT EQU 04 ; Count is initialized to 4

.CODE ; Code segment starts

START:

MOV AX,@DATA ;Initialize the data segment

MOV DS,AX

MOV DX,COUNT-1 ;Move 03(count-1) to DX register

LOOP0: MOV CX,DX ;Move the contents of DX to CX register

MOV SI,OFFSET LIST ;Move the pointer variable of array(list) to SI

LOOP1: MOV AX,[SI] ;Move the contents of array pointed by SI to AX register

CMP AX,[SI+2] ;Compare the contents of array pointed by SI and SI+2

JL PR1 ; Transfers the control to PR1 if OF & SF are SET i.e. if 1st no<2nd style="font-size:130%;">

AIM: To write 8086 Assembly Language Program to sorting n-hexadecimal number in descending order.

Answer:

MODEL SMALL

.STACK 100

.DATA ; Data segment starts

LIST DW 53H, 25H, 02H, 19H ; Array (list) containing 4 elements is initialized.

COUNT EQU 04 ; Count is initialized to 4

.CODE ; Code segment starts

START:

MOV AX,@DATA ;Initialize the data segment

MOV DS,AX

MOV DX,COUNT-1 ;Move 03(count-1) to DX register

LOOP0: MOV CX,DX ;Move the contents of DX to CX register

MOV SI,OFFSET LIST ;Move the pointer variable of array(list) to SI

LOOP1: MOV AX,[SI] ;Move the contents of array pointed by SI to AX register

CMP AX,[SI+2] ;Compare the contents of array pointed by SI and SI+2

JG PR1 ; Transfers the control to pr1 if OF & SF

; are RESET i.e. if 1st no>2nd no.

XCHG [SI+2],AX ;Exchanges the contents of AX with [SI+2]

XCHG [SI],AX ;Exchanges the contents of AX with [SI]

PR1: ADD SI,02 ;Increments SI by 2

LOOP LOOP1 ; Control passes to LOOP1

DEC DX ; Decrement DX register

JNZ LOOP0 ; Jump to LOOP0 if CX! = 0

INT 03H

END START

INPUT:

LIST 53H, 25H, 02H, 19H

OUTPUT:

SORTED ARRAY OF THE INPUT

53H, 25H, 19H, 02H


AIM: To write 8086 Assembly Language Program to find Number of Positive & Negative hexadecimal numbers in an array.

Answer:

MODEL SMALL

.STACK 100

.DATA ; Data segment starts

LIST DW 2345H, 4567H, 8125H, 0A120H ; Initialize an array (LIST) of 16bit

COUNT EQU 04 ; Initialize count variable

.CODE ; Code segment starts

START:

XOR BX,BX ; Clear the contents of BX register

XOR DX,DX ; Clear the contents of DX register

MOV AX,@DATA ; Initialize data segment

MOV DS,AX

MOV CL,COUNT ;Move count to CL register

MOV SI,OFFSET LIST ;Offset of array is moved to SI

LOOP1: MOV AX,[SI] ;The contents of array pointed by SI are moved to AX

SHL AX,01 ;After SHL, the MSB will contain the SIGN FLAG

JC NEG1 ; Jump on no carry to NEG1

INC BX ; Increment BX register

JMP NEXT ; Jump to NEXT

NEG1: INC DX ; Increment DX register

NEXT: ADD SI,02 ;Increment SI by 2

DEC CL ; Decrement CL by 1

JNZ LOOP1 ; Jump to loop1 if ZF! = 0

INT 03H

END START

INPUT:

ARRAY OF 16BITS

LIST DW 2345H, 4567H, 8125H, 0A120H

OUTPUT:

BX register gives the no of positive numbers in the given array (LIST)

DX register gives the no of negative numbers in the given array (LIST)

AIM: To write 8086 Assembly Language Program to find Number of Even & Odd hexadecimal numbers in an array.

Answer:

MODEL SMALL

.STACK 100

.DATA ; Data segment starts

LIST DW 2345 H, 4567 H, 8125 H, 0A120 H, 6742 H ; Initialize an array (LIST) of 16bit

COUNT EQU 05 ; Initialize count variable

.CODE ; Code segment starts

START:

XOR BX,BX ;Clear the contents of BX register

XOR DX,DX ;Clear the contents of DX register

MOV AX,@DATA ;Initialize data segment

MOV DS,AX

MOV CL,COUNT ;Move count to CL register

MOV SI,OFFSET LIST ;Offset of array is moved to SI

LOOP1: MOV AX,[SI] ;The contents of array pointed by SI are moved to AX

ROR AX,01 ;After ROR, the LSB specifies if the no is even/odd

JC ODD ;Jump on no carry to ODD

INC BX ; Increment BX register

JMP NEXT ; Jump to next

ODD: INC DX ; Increment DX register

NEXT: ADD SI,02 ;Increment SI by 2

DEC CL ; Decrement CL by 1

JNZ LOOP1 ; Jump to loop1 if ZF! = 0

INT 03H

END START

INPUT: ARRAY OF 16-BITS

LIST DW 2345H, 4567H, 8125H, 0A120H

OUTPUT:

BX register gives the no of odd numbers in the given array (LIST)

DX register gives the no of odd numbers in the given array (LIST)

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