Mike, The spec sheet for a 1x16 states "to access the right half of this
display,send out the "C0" on the data lines with RS=0,R/W=0, and
E=High-Low.(This will access the IR register).
        Hope this helps,Dennis

Mike Watson wrote:
>
> Hi,
>
> In my current project, I have to write to a 16x1 character LCD display
> (the type based on the Hitachi 44781 (???) chip).
>
> I have done the development work on a 2x16 display using only the
> top line. I have now connected my customers prefered display and it
> seem like the line is split into 2, with the second group of 8
> characters appearing at some higher address. (ie 0x40).
>
> This means that I can't just write chars to the display, I have to
> know when I go from the 8th to the 9th char and adjust the address
> accordingly.
>
> I have not come across this before. Is this common?
>
> Thanks and regards,
>
> Mike Watson