8051 program to convert Hexadecimal number to BCD number

This program performs two divisions. It first divides the value stored at address 30H by 10, stores the quotient and remainder, and then performs a second division on the quotient using the same divisor (10). The second division's quotient is stored back at address 30H, and after swapping the nibbles of the second remainder, it adds the first division's remainder to it and stores the result at memory address 31H. The program then enters an infinite loop, halting execution.