Intel 8086 microprocessor, how to write user data to the operating memory area?

Question

assembler

I am writing a small program that simply needs to translate the entered number or letter into the 16th code.
But it turns out that the room for maneuver is limited to only 4 general-purpose registers.
How to correctly write values ​​to an address and call them on demand.
The program is written in assembler.

Answer 1

Author Do you already have some HelloWorld for 8086 where is the skeleton of this application?
Publish please. I think that it will be very productive, otherwise the participants in the topic will not understand what exactly is not clear to you.