Until I can try all what you suggest, I would like to understand how you Guys read and interpret the codes in the Initialisation Table I put in my post #19. It looks so obvious to you, unfortunately it is not to me...

As an example, I would like to know how you come to a LCDOUT $FE, $0C to switch On the display.

In the table the line sais Display ON/OFF, you see the bits RS(I don't even know what this one is for) and R/W, and then you have for each DB7...0 a value (0 or 1). Finally you've got this $0F value which appears to me as coming from nowhere.

I admit that the $FE is a standart value for sending datas to the display.

But, in this example, where comes the $0C from? I'm lost...

I'm missing this very basic stuff and bothering you with stupid questions so was this discussed in antoher thread already?