Hiya, It's working fine and I think you've doped out what is happening. Most 16x1 displays are actually 8x2 displays with the lower line concatenated onto the first. To jump to the 9th character, send a 0x0C0 instruction to the LCD to move the cursor to the first character of the second line. Good luck! myke ----- Original Message ----- From: "Jinx" To: Sent: Friday, January 05, 2001 10:08 PM Subject: [EE]: LCDs > I'm testing a bunch of reclaimed LCD screens of indeterminate > origin, 16 x1, 20 x 2, 32 x 4 etc. Going well until I went over the > handlebars when a 16 x 1 wouldn't display its full 16 characters. > It has a single 44780, and there doesn't appear to be a second > chip under the glass > > Whilst tinkering (and making the odd error) with the s/w to try and > get something out of this display, I did get chars to appear in the > second 8 positions, but don't know if this was accidental and not > repeatable under controlled conditions > > What I think I've understood from the Hitachi manual is > > a) a 44780 can display only 8 chars of its own, and can store 80 > b) it can drive 44100's, each of which can also display 8 chars > > Can someone please confirm this that so I don't waste any more > time trying to get 16 chars out of an 8 char display. Or is there a > way to get twice the performance out of a 44780 ? Getting the > second 8 to light up accidentally (?) has got me intrigued > > TIA > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body