Hi,

I have a problem. When I use LCD 2X20 in mode 4 data wire, to display data from external RAM.But the character that i just send is change just like in Character Generator ROM MAP (OA). I want the character is in Generator ROM MAP (OB). It's Possible in 4 wire mode ? how ?

Is it the default in 4 wire mode is Character Generator ROM MAP (OA) ?

How we can choose Character Generator ROM MAP (OA) or (OB) ?

I check many time the data in RAM and all valid.

Best regards


andi