10 Programs for practical , Semester II, Microprocessor II

 

Assembly Language Programs

Final 10 Programs for practical

Semester II

Microprocessor II

Q.1) Program Title: WALP to mask the lower nibble of 8 bit number and store the result on memory location [2000]. DS=0200H

Register Used: - AX, AL, [2000], DS

Data: -0200 H, 88H, F0 H

A2000

Address	Op-code	Label	Mnemonics	Operand	Comments
0000:2000	B8,00,02		MOV	AL,0200	Initialization of  DS
:2003	8E,D8		MOV	DS,AX
:2005	B0,88		MOV	AL,88H	Copy 88H in AL
:2007	24,F0		AND	AL,F0	AND F0 with AL
:2009	88,06,00, 20		MOV	[2000],AL	Copy contents of AL on [2000]
:200F	CC		INT	3	Stop

 

Result:-

            0200: [2000]: 80H

 

Q.2) Program Title: WALP to mask the upper nibble of 8 bit number and store the result on memory location [3000]. DS=0400H

Register Used: - AX, AL, [3000], DS

Data: -88H, 0FH, 0400

A2000

Address	Op-code	Label	Mnemonics	Operand	Comments
0000:2000	B8,00,04		MOV	AL,0200	Initialization of  DS
:2003	8E,D8		MOV	DS,AX
:2005	B0,88		MOV	AL,88H	Copy 88H in AL
:2007	24,F0		AND	AL,0F	AND 0F with AL
:2009	88,06,00, 20		MOV	[3000],AL	Copy contents of AL on [3000]
:200F	CC		INT	3	Stop

 

Result:-

            0200: [3000]: 08H

 

Q.3) Program Title: WALP to mask upper nibble of all data store as a block, block begins from [2000]. Length of block is 0A H.

Register Used: - DS, SI, CL, [2000]

Data: - DS:0200:2000- 11, 22, 33, 44, 55,66, 77, 88, 99, AA H

A2000

Address	Op-code	Label	Mnemonics	Operand	Comments
0000:2000	B8,00,04		MOV	AL,0200	Initialization  of  DS
:2003	8E,D8		MOV	DS,AX
:2005	BE,00,20		MOV	SI, 2000	2000 H copy in SI Register
:2008	B1, 0A		MOV	CL,0A	Copy 0A in CL
:200A	B2, 0F		MOV	DL, 0F	Copy 0F in DL
:200C	20,14	BACK:	AND	[SI],DL	AND operation between contents of DL with contents of memory location which is present in SI register and store result on memory location.
:200E	46		INC	SI	Increase  SI
:200F	FE, C9		DEC	CL	Decrease CL
:2011	75,F9		JNZ	BACK	Jump if not zero to 200C
:2013	CC		INT	3	Stop

S0200 : 2000,  2009

Result:-

0200: 2000: 01H

          :2001: 02H

          :2002:03H

          :2003:04H

          :2004:05H

:2005:06H

:2006:07H

:2007:08H

:2008:09H

:2009:0AH

 

 

Q.4) Program Title: WALP to find the factorial of a given number. Store the result on memory location [2000] given number is 05.

Register Used: - [2000], DS, AX, CL, AL

Data: - 05H, 0200H

A2000

Address	Op-code	Label	Mnemonics	Operand	Comments
0000:2000	B8,00,02		MOV	AL,0200	Initialization  of  DS
:2003	8E,D8		MOV	DS,AX
:2005	B0,01		MOV	AL, 01 H	Copy 01 H in AL
:2007	B1, 05		MOV	CL,05 H	Copy 05 H in CL
:2009	F6,E1	BACK:	MUL	CL	Multiply contents of CL with contents of AL
:200B	FE,C9		DEC	CL	Decrease CL
:200D	14,46		JNZ	BACK	Jump if not zero to 2009
:201F	FE, C9		MOV	[2000],AL	Copy contents of AL on memory location [2000]
:2013	CC		INT	3	Stop

S0200 : 2000,  2009

Result:-

            0200: [2000]: 78 H

 

 

 

Q.5) Program Title: - WALP to 44H & 57H in AL & BL register respectively, perform the addition & store the sum on memory location [2000]. DS = 0200H

 

Register & Memory Address Used: - AL, BL & [2000]

Data: - 44H, 57H & 0200H

A7000

Address	Op-code	Label	Mnemonic	Operand	Comments
0000:7000	B8,00,02		MOV	AX,0200	Initialization of DS
:7003	8E,D8		MOV	DS,AX
:7005	B0,44		MOV	AL,44H	;COPY 44H IN AL
:7007	B3,57		MOV	BL,57H	;COPY 55H IN BL
:7009	02,C3		ADD	AL,BL	;ADD CONTENTS OF BL WITH AL & RESULT SOTRED IN AL
:700B	88,06,00,20		MOV	[2000],AL	COPY CONTENTS OF AL ON MEMORY LOCATION [2000]
:700F	CC		INT	03	STOP

 

Result:-

DS : OFFSET : DATA

0200:  [2000]    : 9B H

 

Q.6)  Program Title: -WALP to store 55H & 22H in DL & AH register respectively, perform the Subtraction & store the result on memory location [4000]. DS = 0300H

Register & Memory Address Used: - DL, AH & [4000]

Data: - 55H, 22H & 0300H

A8000

Address	Op-code	Label	Mnemonic	Operand	Comments
0000:8000	B8,00,03		MOV	AX,0300	Initialization of DS
:8003	8E,D8		MOV	DS,AX
:8005	B2,55		MOV	DL,55H	;COPY 55H IN DL
:8007	B4,22		MOV	AH,22H	;COPY 22H IN AH
:8009	2A,D4		SUB	DL,AH	;SUBTRACT CONTENTS OF AH FROM DL & RESULT SOTRED IN DL
:800B	88,16,00,40		MOV	[4000],DL	COPY CONTENTS OF DL ON MEMORY LOCATION [4000]
:800F	CC		INT	03	STOP

 

Result:-

DS   : OFFSET : DATA

0300:  [4000]    : 33H

 

Q.7)  Program title:-WALP(write assembly language program)to transfer the block of data of 10 elements from M.L[3000] onwards to M.L[2000] onwards .DS=0400 .

Abstract:-DS, AX, SI, DI, CL, AL.

Data:-0400:3000 -01,02,03,04,05,06,07,08,09,0A.

A2000

Address	Opcode	Label	Mnemonics	Operand	Comments
:2000	B8,00,04		MOV	AX,0400	Initialization Of DS
:2003	8E,D8		MOV	DS,AX
:2005	BE,00,10		MOV	SI,3000	;3000 H copy in SI Register
:2008	BF,00,20		MOV	DI,2000	;2000 H copy in DI Register
:200B	B1,0A		MOV	CL,0A	;copy 0A in CL
:200D	8E,04	BACK:	MOV	AL,[SI]	;contents of SI copy on AL
:200F	88,05		MOV	[DI],AL	;copy contents of AL on DI
:2011	46		INC	SI	;increase SI
:2012	47		INC	DI	;increase DI
:2013	FE,C9		DEC	CL	;decrease CL
:2015	75,F6		JNZ	BACK	;jump if not zero;
:2017	CC		INT	03	;stop

 

RESULT:-D0200:2000:2009

                 0400:2000:-01

                      :2001:-02

                       2002:-03

2003:-04

2004:-05

2005:-06

2006:-07

2007:-08

2008:-09

2009:-0A

Q.8) Program Title-WALP(write assembly language program ) to find the given number is odd or even if number is odd store 00H on memory location [4000]else store FF H the number is 44H in a BL register.

[if d₀ is the ‘1’the number is odd if d₀ bit is ‘0’the number is even]

Abstract: AX, DS, BL, AL, DL, [4000]

Data:0200H, 44H, 01H, 11H, 0FFH

A2000

Address	Opcode	Label	Mnemonics	Operand	Comments
:2000	B8,00,02		MOV	AX,0200	Initialization Of DS
:2003	8E,D8		MOV	DS,AX
:2005	B3,44		MOV	BL,44	;copy 44 in BL
:2007	D0,CB		ROR	BL,1	;check D0 bit
:2009	72,07		JC	ODD	;jump with carry
:200B	B2,FF		MOV	DL,0FF	;copy 0FF in DL
:200D	88,16,00,40		MOV	[4000],DL	;the no is even
:2011	EB,FA		JMP	END	;jump
:2013	B0,11	ODD:	MOV	AL,11	;the no. is odd
:2015	88,06,00,40		MOV	[4000],AL	;copy contents of AL on memory location [4000]
:2019	CC	END:	INT	03	;stop

 

RESULT:- 0200:[4000]:FF (number is even)

Q.9) Program Title:- WALP(write assembly language progam) to store 88H in AL register &find the number is +ve or –ve .if number is +ve store FF H on memory location [5000] otherwise store 00H.DS=0200H.

[if D₇ is bit 0 the number is +ve, if D₇ bit is 1 the number is –ve ]

Abstract:-AX, DS, AL, DL, [5000]

Data:-0200H, 88H, 01H, 00H, 0FFH

A2000

Address	Operand	Label	Mnemonic	Operand	Comments
:2000	B8,00,02		MOV	AX,0200	Initialization Of DS
:2003	8E,D8		MOV	DS,AX
:2005	B0,88		MOV	AL,88	;copy 88 in  AL
:2007	D0,C0		ROL	AL,1	;check D7bit
:2009	72,07		JC	NEG	;jump with carry
:200B	B2,FF		MOV	DL,FF	;no is +ve copy FF in DL.
:200D	88,16,00,50		MOV	[5000],DL	;and DL contents on memory location
:2011	CC		INT	3	;stop execution
:2012	B2,00	NEG:	MOV	DL,00	;no is –ve copy 00 in DL
:2014	88,16,FC,4F		MOV	[5000],DL	And DL content on Memory location .
:2018	CC		INT	3	;stop execution

 

Result:-0200:[5000]:00H(number is –ve)

Q.10)Program Title:-WALP(Write assembly language program)to find smallest number in block of 5 elements .block begins from memory location [2000].store the smallest number on memory location [5000].DS=0200.

Abstract: AX, DS, SI, CL, AL, [2000], [5000]

Data: DS:0200:[2000]:88

                            [2001]:22H

                           [2002]:33H

                            [2003]:77H

                           [2004]:55H

A2000

 

Address	Operand	Label	Mnemonic	Operand	Comments
:2000	B8,00,02		MOV	AX,0200	Initialization Of DS
:2003	8E,D8		MOV	DS,AX
:2005	B8,00,20		MOV	SI,2000	2000 H copy in SI register
:2008	B1,04		MOV	CL,04	;copy 04 in CL
:200A	8A,04		MOV	AL,[SI]	;contents of memory location SI copy on AL register
:200C	46	BACK:	INC	SI	;increase SI
:200D	3A,04		CMP	AL,[SI]	;comparison for +ve or –ve
:200F	72,FC		JC	NEXT	;jump with carry
:2011	8A,04		MOV	AL,[SI]	;copy contents of SI memory location in AL register
:2013	FE,C9	NEXT:	DEC	CL	;decrease CL
:2015	75,F5		JNZ	BACK	;jump if not zero
:2017	88,06,00,50		MOV	[5000],AL	;copy  contents of AL on memory location [5000]
:201B	CC		INT	3	;stop

 

 

Result:-0200:[5000]:22H