What sizes of LCD’s will work with an all zero pic id header? Will any of the character displays on the web site work?Does the header just determine whether it is graphical or character,or does it also have something to do with the # of characters?
mmm I don’t really understand what you mean but :
ID = 0000000000000000 it’s for character LCD (any size). This works only with MIOS (so pic18f452).
The ID determine if it’s character or graphic display ADN the midi interface (common midi or via the serial port).
I hope this help you 
that’s what I needed to know.Thanx.