Thank you for the warm welcome and all your answers with hints!

@Dr Jefyll

Welcome, HelgeCPH. For some reason I'm not able to view the image. May I suggest you attach it with your post? This forum (unlike many others) does allow that. :)

Right, I do not know why this happens, but I edited the ...

Hej everybody,

I am new to this forum, new to the 6502 processor, this is my first post in the forum, and it is directly my first question.

After reading some blogposts, such as,

http://www.grappendorf.net/projects/6502-home-computer/the-microprocessor.html,
https://coronax.wordpress.com/2012 ...