Sunday, August 19, 2012

Sunday, August 19, 2012 -

BCD TO HEX CONVERSION

To convert two BCD numbers in memory to the equivalent HEX number using 8085
instruction set

ALGORITHM:
1) Initialize memory pointer to 4150 H
2) Get the Most Significant Digit (MSD)
3) Multiply the MSD by ten using repeated addition


4) Add the Least Significant Digit (LSD) to the result obtained in previous step
5) Store the HEX data in Memory


PROGRAM:
LXI H,4150
MOV A,M Initialize memory pointer
ADD A MSD X 2
MOV B,A Store MSD X 2
ADD A MSD X 4
ADD A MSD X 8
ADD B MSD X 10
INX H Point to LSD
ADD M Add to form HEX
INX H
MOV M,A Store the result
HLT

OBSERVATION:
Input: 4150 : 02 (MSD)
4151 : 09 (LSD)
Output: 4152 : 1D H