This question applies to any SED1335, S1D13305, S1D13700, etc... based graphic LCD.
I've got my mega128 talking to the controller no problem. What I am getting confused by is scrolling.
It seems if you wish to vertically scroll a text screen you simply right a new starting address to the scroll register. Ok, that works. I can scroll up or down a line at a time.
But how would you scroll up indefinetly? With the above technique you would quickly run out of display memory. It can't be true that I have to keep my own display buffer in the mega's ram and re-write the whole screen for every scroll????? What the heck would be the point of their scroll register then? I know I'm missing something simple here.
I hope my question is clear. Does anyone have any experience with scrolling on one of these things?