Question

((Microprocessors 8086 & Assembly Language))

Hellp
General Instructions:
Explain the project and analyze the logic of the program in clear.
Write the code of the project in the code section.
Write steps for execution and running the project, insert the screen shot and result
of the program.
CODE CONVERSIONS – BINARY TO BCD OBJECTIVE
To convert a given binary to BCD. ALGORITHM:
Step 1: Initialize the data to the data segment. Step 2: Move the input to AX register.
Step 3: Move 64 to CL register
Step 4: Divide AL, CL value
Step 5: Increment memory by 1 and move AL value Step 6: Move AH value to AL
Step 7: Move 0A to CL register
Step 8: Divide the AL, CL
Step 9: Rotate CL register 4 times
Step 10: Add AH, AL
Step 11: Store the resultant in memory location.
KING KHALID UNIVERSITY College of Computer Science Dept. of Computer Science
Deadline: 30-11-2023
Subject Code: 352 CCS
Subject Name: Microprocessors & Assembly Language
HOD: Dr. Omar
Teacher: Syeda
Section:817
Mini Project

 DIGITAL CLOCK AIM
To write an ALP program for displaying the Digital clock.
ALGORITHM
Create the display macro for string
Initialise the necessary register with the required values.  Use a macro to display clock value.
End the code.
To write an ALP program
a) multiply a 16-bit number by an 8-bit number.
b) find square root of an 8-bit number.

Answer 1

Code to algorithm to convert binary to BCD is:

; Start of program

; Initialize data segment

.DATA

binary_number DB 11010101 ; Binary number to convert

bcd_result DD 0 ; Memory location to store BCD result

; Initialize code segment

.CODE

START:

; Move binary number to AX register

MOV AX, binary_number

; Move 64 to CL register for division by 10

MOV CL, 64

; Divide AX by CL (hundreds digit)

DIV CL

; Increment memory by 1 and move AL value (hundreds digit)

INC bcd_result

MOV [bcd_result], AL

; Move AH to AL (tens and units digits)

MOV AL, AH

; Move 0A to CL for division by 10

MOV CL, 0A

; Divide AL by CL (tens digit)

DIV CL

; Rotate CL register 4 times (shift tens digit to memory location)

ROL CL, 4

; Add AH and AL (tens and units digits)

ADD AH, AL

; Store result in memory location (BCD result)

MOV [bcd_result], AX

; End of program

MOV AH, 4CH

INT 21H

END START

What is the code for the Assembly Language?

The program that is shown above uses the algorithm to convert binary to BCD and the step is:

1. Move the input binary number to the AX register.
2. Divide the AX register by 10 (represented by the hexadecimal value 0A). This will give us the hundreds digit of the BCD number.
3. Store the quotient (hundreds digit) in a memory location.
4. Move the remainder (tens and units digits) to the AL register.
5. Divide the AL register by 10. This will give us the tens digit of the BCD number.
6. Store the quotient (tens digit) in a memory location.
7. Move the remainder (units digit) to the AL register.
8. Store the units digit in a memory location.