Quote Originally Posted by Acetronics
Hi,Joe

Mhhhh, now, If you DO NOT send data one after the other , but specify WHERE you want it to be written ...

Only 2 lines will be used ...

But YOU MUST Tell PbP you USE a 4 LINES Display ... PbP can't think you only WANT 2 lines ... no DEFINE for unwanted lines !!!

CQFD

Alain.
HI Alain,
The thing is, if you check post #6, I am sending the data in a manner so as to tell PBP where to write each line, I would expect the software to delimit the display to the addresses available only to a 2 line display if it is defined as a 2 line, even with a 4 line display connected, but it displays all 4 lines. Now if I install a 2 line display, and send 4 lines of data as written in post 6, only the lines written for line 1 and line 2 will display. I would have expected the PIC to truncate the third and fourth lines when set to 2 lines, even when connected to a 4 line display. It appears that is not so. So I still have the question, what effect does DEFINE LCD_LINES have on the LCDOUT command?
Regards
JS