Thank you so much, that's exactly what I was looking for.
I had no idea about < >.

I'd like to create a kind of table for strings for printing purposes like this:
s1: .asciiz "string 1"
s2: .asciiz "string 2"
s3: .asciiz "string 3"


The table will be hard coded in rom and when I need one of those strings I'd like to move the address of a label to a zp location.
But I don't know ...

I meant to write that, i guess I was not fully awake.

Thank you all for helping me out!
It's clear to me now, whitout looking at the instruction set I assumed that a nop instruction was a one cycle instruction.
And while I'm waiting for the memory chip i cannot run a real program to see the difference.
The 55 is slow indeed, I'll add an hc414 for to be ...

I am following Ben Eaters 6502 project and build the clock and connected an w65c02 and the resistors on the databus for the NOP command (without eeprom or ram I'm still waiting for those components).
When monitoring the "program" running with an Arduino i noticed that the cpu executes each ...