IVP wrote: >> Drawing a line from 1,0 to 1,240 sets bytes 0 to 239 to 0x02, erasing=20 >> the first line >> =20 > > If I understand you, the new data should be IORed with or added to > the existing ? Or 8 lines should be drawn at once with FF ? > > Joe > =20 Assuming that my assumptions are correct, yes. IORed, that is, not=20 literally added. Kerry --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .