User Manual - Microprocessor and Micro Controller Lab Assembly Language Program for 16 bit addition Previous Link: Lab: ALP Development and Execution Procedure : https://www.slideshare.net/slideshow/assembly-language-program-development-and-execution-procedure/275956545#2 Exercises: 1. 8 Bit Addition : https://www.slideshare.net/slideshow/assembly-language-program-for-8_bit_addition/275956745 Theory Unit I : https://www.slideshare.net/slideshow/lecture-notes-microprocessor-unit-1-microprocessor-architecture-and-its-operation/274981732 Unit II : https://www.slideshare.net/slideshow/lecture-notes-microprocessor-and-controllerunit2/275715906 Target Audience: First year (Second Semester) B.Sc. Computer Science students at Alagappa University seeking a solid foundation in microprocessor and micro controller Lab for academic and practical applications. About the Author: Dr. S. Murugan is Associate Professor at Alagappa Government Arts College, Karaikudi. With more than 20 years of teaching experience in the field of Computer Science, Dr. S. Murugan has a passion for simplifying complex concepts in microprocessor and micro controller. Disclaimer: This document is intended for educational purposes only. The content presented here reflects the author’s understanding in the field of Microprocessor and micro controller.

1. Microprocessor and Microcontroller Lab
Prepared By
Dr. S.Murugan, Associate Professor
Department of Computer Science,
AlagappaGovernment Arts College, Karaikudi.
(Affiliated by Alagappa University)
Mailid: muruganjit@gmail.com

2. 2. 16 Bit Addition

3. Addition of two 16 bit numbers
Memory Location Hex
Code
Mnemonics Comment
1000
1001
1002
2A
00
11
LHLD 1100 ; Load the contents of memory locations
1100 and 1101 into registers H and L.
(Load the first 16 bit number)
1003 EB XCHG ; Exchange the contents of register pair
HL with the DE register pair
1004
1005
1006
2A
02
11
LHLD 1102 ; Load the contents of memory locations
1102 and 1103H into registers H and L.
(Load the second 16 bit number)
1007 19 DAD D ; Add the contents of the DE register pair
to the HL register pair (HL = HL + DE)
1008
1009
100A
22
00
12
SHLD 1200 ; Store the contents of registers H and L
into memory locations 1200 and 1201
100B 76 HLT ;Halt the program execution

4. Addition of two 16 bit Numbers - Result
Input Output
Memory
Location
Hexa
Decimal
Decimal Memory
Location
Hexa
Decimal
Decimal
1100 FF 255 1200 3A 58
1101 01 01 1201 04 04
1102 3B 59
1103 02 02