In a message dated 96-12-18 00:00:21 EST, Kalle anwered:

>> Is it necessary to pull the unused inputs to the lcd low externally ?
>
>  Yes.
>

Are you sure about that?  My interface _appears_ to be working fine, yet I
leave the four extra data lines DB<3:0> floating.  Am I likely to blow them
up or something?  The example code from Optrex, for 4-bit interface, doesn't
 _use_ DB<3:0>

Best regards to all, and wishes for a happy season!!  8^)

Shel Michaels
Massachusetts, USA