Well, that's one reason to learn why everything works the way everything works...
'cause if you did...you may also find out that on a parallel LCD, you don't necessarily need the R/W pin connected, just tie it low.
There ya go! Saved you 1 pin...
You can actually figure it out for yourself.
Make a program that accesses the LCD, compile it, assemble it, set up MCS to output a .LST file (before compiling and assembling), then search that .LST file for the LCDOUT command. If you look close enough, you should be able to see references in that .LST file as to where the command is going to send data/control signals.
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