well I got my LCD modules in and after lots of studying, figured out how to hook it up. couldn't get anything on the display, then ended up getting junk. after couple of code changes, and finally changing the LCD_DATAUS to 50 from 20, I'm getting what I expect on the display. I'm still getting the first line all "black squares" (or what ever you call it when all the dots are on) on power up. They clear with the clear command, but seems like it shouldn't be doing the "light up the first line" thing when powered up. I'll keep grinding to figure it out. (the second line of the display does not do this).