3 1 Cse Mpi Unit 2

NRI Institute Of Technology

CSE III B.Tech I SEMESTER MPI 103

UNIT-II

2.1) Arithmetic instruction ALPs 2.2) Logical instruction ALPs 2.3) Sorting and String manipulation ALP



2.1) Arithmetic instruction ALPs:

1) Write an 8086 assembly language program for addition of two ASCII numbers.

PROCEDURE: 1. Start the program

2. Move the data byte 39 to AL register 3. Move the data byte 35 to BL register 4. Add the contents BL to the contents of AL. Result will be stored in AL register. 5. Use the instruction AAA to adjust the result to correct unpacked BCD 5. Stop the program by using Interrupt. PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AL, 39

MOV BL, 35

ADD AL, BL

AAA

INT 3

2) Write an 8086 assembly language program for subtract two ASCII numbers. PROCEDURE: 1. Start the program

2. Move the data byte 39 to AL register 3. Move the data byte 35 to BL register 4. Subtract the contents of BL from the contents of AL. Result will be stored in AX register.

5. Use the instruction AAS to adjust the result to correct unpacked BCD 5. Stop the program by using Interrupt.



Program: -


MOV BL, 35 SUB AL, BL

AAS

INT 3

3) Write an 8086 assembly language program for multiplication of two ASCII numbers.

PROCEDURE: 1. Start the program 2. Move the data byte 09 to AL register 3. Move the data byte to 06 BL register 4. Multiply the contents of AL with the contents of AL. Result will be stored in AX register.

5. Use the instruction AAM to adjust the result to correct unpacked BCD. 6. Stop the program by using Interrupt.

PROGRAM: -


MOV BL, 06

MUL BL

AAM

INT 3



4) Write an 8086 assembly language program for division of two ASCII numbers. PROCEDURE: 1. Start the program 2. Move the data 0507 to AX register 3. Move the data 09 to CH register 4. Use the AAD instruction to adjust the content of AX to correct unpacked BCD before division operation. 5. Divide the contents of AX with the contents of CH. Result will be stored in AX register.

6. Stop the program by using Interrupt. PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0507 MOV CH, 09

AAD

DIV CH

INT 3

5) Write an 8086 assembly language program for GCM of given numbers. PROCEDURE: 1. Start the program 2. Move the data word10000 to AX register 3. Move the data word 3050 to BX register 4. Move the data word 0000 to DX register 5. Move the data word 0004 to CX register 6 Move the data word 3000 to source index register. 7. Move the data word 3010 to destination index register 8. Move the contents of source index register to AX register



9. Add the contents of destination index register to the contents of AX 10. Move the result in AX to memory location whose offset address is in BX register 11. Increment source index register twice 12. Increment destination index register twice. 13. Increment BX register. 14. Decrement CX register.

15. Check the flag register whether zero flag is set or reset. Jump to specified memory location if it is reset. Otherwise Check the flag register whether borrow flag is set or reset. Jump to specified memory location if it is not set. Otherwise increment DX register.

16. Stop the program by using Interrupt. PROGRAM: -

ADDRESS LABEL MNEMONIC OPERAND MOV AX, 0000

MOV BX, 3050 MOV DX,0000

MOV CX,0004

MOV SI, 3000

MOV DI,3010

L1: MOV AX, [SI] ADC AX, [DI] MOV [BX], AX INC SI

INC SI

INC DI

INC DI

INC BX

INC BX

DEC CX

JNZ L1



JNB L2

INC DX

L2: INT 3

6) Write an 8086 assembly language program for multi byte subtraction.

PROCEDURE: 1. Start the program 2. Move the data word10000 to AX register 3. Move the data word 3050 to BX register 4. Move the data word 0000 to DX register 5. Move the data word 0004 to CX register 6 Move the data word 3000 to source index register. 7. Move the data word 3010 to destination index register 8. Move the contents of source index register to AX register 9. Subtract the contents of destination index register from the contents of AX 10. Move the result in AX to memory location whose offset address is in BX register 11. Increment source index register twice 12. Increment destination index register twice. 13. Increment BX register twice. 14. Decrement CX register. 15. Check the flag register whether zero flag is set or reset. Jump to specified memory location if it is reset. Otherwise Check the flag register whether borrow flag is set or reset. Jump to specified memory location if it is not set. Otherwise increment DX register.

16. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0000

MOV BX, 3050 MOV DX,0000



MOV CX,0004

MOV SI, 3000

MOV DI,3010

L1: MOV AX, [SI] SBB AX, [DI] MOV [BX], AX INC SI

INC SI

INC DI

INC DI

INC BX

INC BX

DEC CX

JNZ L1

JNB L2

INC DX

L2: INT 3

7) Write an 8086 assembly language program for the generation of Fibonacci series.

PROCEDURE: 1. Start the program 2. Move the data 00 to BL register 3. Move the data 01 to DL register 4. Move the data 2500 to CX register 5. Move the data 2600 to source index register 6. Move the contents of BL to the memory location whose offset address is specified in SI 7. Increment source index register 8. Move the contents of DL to the memory location whose offset address is specified in SI



9. Add the contents of DL with the contents of BL and store the result in BL 10. Exchange the contents of BL and DL 11. Repeat from step 7 until count in CX register is equal to zero. 12. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV BL, 00

MOV DL, 01

MOV CX, 0005 MOV SI, 2600

MOV [SI], BL L1: INC SI

MOV [SI], DL ADD BL, DL

XCHG BL, DL

LOOP L1

INT 3

8) Write an 8086 assembly language program for finding the factorial of a given number. PROCEDURE: 1. Start the program 2. Move the contents of data from the memory location [2500] to AL register 3. Move the contents of AL to CL register. 4. Decrement the contents of CX register

5. Multiply the contents of CL with the contents of AL. Result will be stored in AX register. Repeat the multiplication until count in CX register is equal to zero.

6. Move the result to the memory location 2600 7. Stop the program by using Interrupt.



PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV SI, 2500 MOV DI, 2600

MOV AX, [SI] MOV CX, AX

DEC CX

L1: MUL CX

LOOP LI

MOV [DI], AX INT 3



2.2) Logical instructions ALPs:

Packed BCD to Unpacked BCD Logical OR on two numbers Logical AND on 2 numbers Logical NOT on two numbers Logical TEST operation

Rotate left through carry on a given number Rotate right through carry on a given number Rotate left operation on a given number Rotate right operation on a given number Shift arithmetic right on a given number Shift given number right (SHR) Shift given number left (SHL) Conversion of ASCII to BCD

Conversion of BCD to ASCII

1) Write an 8086 assembly language program for conversion of packed to unpacked BCD. PROCEDURE: 1. Start the program 2. Move the data 00 to AL register 3. Move the data 00 to AH register 4. Move the content of AL to BL

5. Move the data 3010 to destination index 6. Perform logical AND operation on the contents of AL and 0F 7. Move this RESULT in AL to the memory location whose offset address is specified in destination index. 8. Increment destination index register. 9. Move the data 04 to CL register 10. Shift right the content of BL by CL times.



11. Move the contents of BL to the memory location whose offset address is stored in destination index. 12. Increment destination index register. 13. Now perform the AND operation on contents of AH register. Repeat the steps from 8

to 12 by replacing BL by BH 14. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AL, 34

MOV AH, 12

MOV BL, AL

MOV BH, AH

MOV DI, 3010

AND AL, 0F

MOV [DI], AL INC DI

MOV CL, 04

SHR BL, CL

MOV [DI], BL INC DI

AND AH, 0F

MOV [DI], AH INC DI

SHR BH, CL

MOV [DI], BH INT 3

2) Write an 8086 assembly language program for logical OR operation.

PROCEDURE:



1. Start the program 2. Move the data 1234 to AX register 3. Move the data FFFH to BX register 4. OR the contents of BX and the contents of AX. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 1234

MOV BX, 0FFFF

OR AX, BX

INT 3

3) Write an 8086 assembly language program for logical AND operation. PROCEDURE: 1. Start the program

2. Move the data 0012 to AX register 3. Move the data FFFH to BX register 4. AND the contents of BX and the contents of AX. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0012

MOV BX, 0FFFF

AND AX, BX

INT 3



4) Write an 8086 assembly language program for logical NOT operation. PROCEDURE: 1. Start the program 2. Move the data FFFF to AX register 3. NOT the contents of AX. Result will be stored in AX register. 5. Stop the program by using Interrupt.

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0FFFF

NOT AX

INT 3

5) Write an 8086 assembly language program for logical TEST operation. PROCEDURE: 1. Start the program

2. Move the data 0F to AL register 3. Move the data 00 to BL register 4. TEST the contents of AL and the contents of BL. Result will be stored in AL register. 5. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AL, 0F

MOV BL, 00

TEST AL, BL

INT 3



6) Write an 8086 assembly language program for rotate left through carry. PROCEDURE: 1. Start the program 2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Rotate the contents of AX register left through carry by the content of CL times. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0AAAA

MOV CL, 01

RCL AX, CL

INT 3

7) Write an 8086 assembly language program for rotate right through carry. PROCEDURE: 1. Start the program 2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Rotate the contents of AX register right through carry by the content of CL times. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0AAAA

MOV CL, 01



RCR AX, CL

INT 3

8) Write an 8086 assembly language program for rotate left.


2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Rotate the contents of AX register left by the content of CL times. Result will be stored in AX register.


PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV AX, 0AAAA

MOV CL, 01

ROL AX, CL

INT 3

9) Write an 8086 assembly language program for rotate right operation. PROCEDURE: 1. Start the program 2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Rotate the contents of AX register right by the content of CL times. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: -




MOV CL, 01

ROR AX, CL

INT 3

10) Write an 8086 assembly language program for shift arithmetic right operation. PROCEDURE: 1. Start the program 2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Shift the contents of AX register right by the content of CL times. Result will be stored in AX register.



MOV CL, 01

SAR AX, CL

INT 3

11) Write an 8086 assembly language program for shift left operation. PROCEDURE: 1. Start the program 2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Shift the contents of AX register left by the content of CL times. Result will be stored in AX register.




PROGRAM: -


MOV CL, 01

SHL AX, CL

INT 3

12) Write an 8086 assembly language program for rotate right operation. PROCEDURE: 1. Start the program

2. Move the data AAAA to AX register 3. Move the data 01 to CL register 4. Rotate the contents of AX register right by the content of CL times. Result will be stored in AX register. 5. Stop the program by using Interrupt.

PROGRAM: -


MOV CL, 01

SHR AX, CL

INT 3

13) Write an 8086 assembly language program for conversion of ASCII to BCD. PROCEDURE: 1. Start the program

2. Move the data 000A to CX register



3. Move the data 3000 to source index 4. Move the data 4000 to destination index 5. Move the contents of source index to AX register. 6. Add 02 to SI 7. Call the subroutine below 8. Move the contents of AX to the memory location whose offset address is specified in destination index. 9. Add 02 to destination index. 10. Decrement CX 11. Check the flag register whether zero flag is set or reset. Jump to specified memory location if zero flag not set. Otherwise terminate the program. Subroutine: -

Move data 000F to BX register. Add the contents of BX to the contents of AX Return to main program.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV CX,000A

MOV SI, 3000

MOV DI, 4000

TOP: MOV AX, [SI] ADD SI, 02

CALL BELOW

MOV [DI], AX ADD DI, 02

DEC CX

JNZ TOP

INT 3

BELOW: MOV BX, 0F0F

AND AX, BX



RET

14) Write an 8086 assembly language program for conversion of BCD to ASCII. PROCEDURE: 1. Start the program 2. Move the data 000A to CX register 3. Move the data 3000 to source index 4. Move the data 4000 to destination index 5. Move the contents of source index to AX register. 6. Add 02 to SI 7. Call the subroutine below 8. Move the contents of AX to the memory location whose offset address is specified in destination index. 9. Add 02 to destination index. 10. Decrement CX 11. Check the flag register whether zero flag is set or reset. Jump to specified memory location if zero flag not set. Otherwise terminate the program. Subroutine: -

Move data 3030 to BX register. OR the contents of BX to the contents of AX

Return to main program.

PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV CX, 000A

MOV SI, 3000

MOV DI, 4000

TOP: MOV AX, [SI] ADD SI, 02

CALL BELOW



MOV [DI], AX ADD DI, 02

DEC CX

JNZ TOP

INT 3

BELOW: MOV BX, 3030

OR AX, BX

RET



2.3) Sorting and String manipulation ALPS:

1) Write an 8086 assembly language program for sort the numbers in ascending order.


2. Move the data 2100 to DX register 3. Move the data 2102 to source index and destination index 4. Decrement DX

5. Move the contents of DX to CX 6. Move the contents of SI to AX 7. Add 02 to DI 8. Compare the contents of AX and contents of destination index 9. Jump if less than or equal to one to the specified memory location. 10. Exchange the contents of Ax and the contents of destination index. 11. Repeat from step 2 until count in the CX register is equal to zero. 12. Exchange the contents of Ax and the contents of source index. 13. Add 02 to SI 14. Move the contents of source index to destination index. 15. Decrement DX 16. Jump if not equal to specified location. 17. Stop the program by using Interrupt. PROGRAM: -

ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV DX, 0004

MOV SI, 2102

MOV DI, 2102

DEC DX

L 3: MOV CX, DX

MOV AX, [SI] L2: ADD DI, 02



CMP AX, [DI] JLE L1

XCHG AX, [DI] L1: LOOP L2

XCHG AX, [SI] ADD SI, 02

MOV DI, SI

DEC DX

JNE L3

INT 3

2) Write an 8086 assembly language program for sort the numbers in descending order. PROCEDURE: 1. Start the program 2. Move the data 2100 to DX register 3. Move the data 2102 to source index and destination index 4. Decrement DX

5. Move the contents of DX to CX 6. Move the contents of SI to AX 7. Add 02 to DI 8. Compare the contents of AX and contents of destination index 9. Jump if not less than to the specified memory location. 10. Exchange the contents of Ax and the contents of destination index. 11. Repeat from step 2 until count in the CX register is equal to zero. 12. Exchange the contents of Ax and the contents of source index. 13. Add 02 to SI 14. Move the contents of source index to destination index. 15. Decrement DX 16. Jump if not equal to specified location. 17. Stop the program by using Interrupt.



PROGRAM: - ADDRESS OPCODE LABEL MNEMONIC OPERAND MOV DX, 0004

MOV SI, 2102

MOV DI, 2102

DEC DX

L 3: MOV CX, DX

MOV AX, [SI] L2: ADD DI, 02

CMP AX, [DI] JNL L1

XCHG AX, [DI] L1: LOOP L2

XCHG AX, [SI] ADD SI, 02

MOV DI, SI

DEC DX

JNE L3

INT 3

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3 1 Cse Mpi Unit 2