I am playing with 2 line displays and an 18X with great success, not my design sadly. The initation code is
rs = LCDInstruct
for Counter = 0 to 5
lookup Counter,($33,$32,$28,$0F,$01,$06),OutputByte
' #33 8 bit 1 line 5 x 7 dots
' $32 ???????????
' $28 4 bits 2 lines 5 x 7 dots
'...