Thank you very much for an in-depth analysis of my problem. I programmed in high level languages a bit and change the way of thinking is really difficult for me. Now I have to, based on this program, display the hex 8-bit number. I know the relationship between binary and hex numeral system.
Is a ...

Hello.
My exercise is to understand how this program works. I have some concept how it works but I think my knowledge is not sufficient to explain it properly. I use xasm compiler, did 'Easy 6502 by skilldrick' and have some books but it's not enough. Comments are mine.

Thanks in advance for any ...