Convert Two-Digit Hex to Two ASCII Values in 8085

Now let us see a program of Intel 8085 Microprocessor. This program will convert 8-bit numbers to two digit ASCII values.

Problem Statement

Write 8085 Assembly language program where an 8-bit binary number is stored in memory location 8050H. Separate each nibbles and convert it to corresponding ASCII code and store it to the memory location 8060H and 8061H.

Discussion

In this problem we are using a subroutine to convert one hexa-decimal digit (nibble) to its equivalent ASCII values. As the 8-bit number contains two nibbles, so we can execute this subroutine to find ASCII values of them. We can get the lower nibble very easily by masking the upper nibble, and for the upper nibble, we have to mask the lower nibble at first, then rotate the register content dour times to the right to make, now we can change it to ASCII values.

Here we will put 3AH as input, the program will return 33 and 41. These are the ASCII values of 3 and A respectively.

Input

Flow Diagram

Program

Output