The Knowledge Adda

Assumption: Assume that data is stored in memory location 2500 and 2501 H. Store the result in 2502H and 2503 H.

 

Algorithm:

Program:

Memory Address	Op-code	Operand	Comments
2000	LHLD	2500 H	Get First Number
2007	MOV	A,H	Save data of H in A
2008	RAR		Rotate right accumulator
2009	MOV	H,A	Save data of A in H
200A	MOV	A,L	Move Content of L into A
200B	RAR		Rotate right accumulator
200C	MOV	L,A	Save data of A in L
200D	SHLD	2502 H	Store output
2010	RST	5	Set Break Point
2011	END		End the program

 

Used Instruction:

LHLD addr: This instruction copies the contents of memory location given within the instruction into L register and contents of next memory location into the H register. 

MOV rd,rs: This instruction copies data from the source register into destination register. 

RAR: Rotates the bits of accumulator right by one position, through the carry 

SHLD: The contents of register L are stored in the memory location specified by the 16-bit address in the operand and the contents of register H are stored in the next memory location. 

RST 5: This instruction is used to set break-point for the execution. 

END: This instruction is used to execute the program.

 

Result:  

Input:  

Number-3412 

2500-12 

2501-34 

Output: 

2502-09 

2503-1A 

 

Procedure to look output