FY-2-c Easy 8085 program to Add 16-bit number in memory locations

January 30, 2021January 28, 2021 by adminvgitcs

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8085 Program to ADD 16-bit number in memory locations

Add the 16-bit number in memory locations 4000H and 4001H to the 16-bit number
in memory locations 4002H and 4003H. The most significant eight bits of the two
numbers to be added are in memory locations 4001H and 4003H. Store the result in
memory locations 4004H and 4005H with the most significant byte in memory
location 4005H.

For following program we have change address to following :

4000->0700,
4001->0701,
4002->0702,
4003->0703,
4004->0704,
4005->0705

Number 1=1234
Number 2=3453

0700 34
0701 12
0702 53
0703 34

LHLD 0700   
XCHG
LHLD 0702
DAD D
SHLD 0704
HLT

LHLD 0700 : 3 byte instruction, it stands for Load HL pair using Direct addressing. This instruction will load 16-bits data from memory location 0700 to HL pair.

XCHG : 1 byte instruction, stands for exchange. This instruction will exchange data between HL pair and DE pair. Data of H register will swapped with D register and data of L register will swapped with E register.

LHDL : This instruction will load 16-bits data from memory location 0702 to HL pair.

DAD D : 1 byte instruction, it stands for Double ADD. This command will add values of DE pair with values of HL pair.

SHLD 0704 : 3 byte instruction, it stands for Store HL pair using Direct addressing. This command will store 16 bits data from HL pair to 0704 memory location.

HLT – This command is use to put microprocessor on halt.

8085 instructions to add 16 bit number into memory location

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Perform the following Operations related to memory locations.

FY-1-a Easy program to store one byte data into memory location

FY-1-b 8085 program to exchange content of memory locations in easy way

Simple assembly language programs.

FY-2-a Subtract content of one memory location from another and store the result in third memory location

FY-2-c Easy 8085 program to Add 16-bit number in memory locations

FY-2-d Easy Add content of two memory locations and store the result in third memory location

FY-2-f Easy 8085 program to find 1s complement of the number

FY-2-g Easy 8085 program to find 2s complement of the number

Packing and unpacking operations

FY-3-a Easy 8085 program to pack the two unpacked BCD numbers stored in memory locations

FY-3-b Easy 8085 program to Unpack the BCD number and store the two digits in memory locations

Register Operations

FY-4-a Easy 8085 program to shift an eight bit data four bits right

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