Sorry, goofed, brain fade.
I've been saving IO pins by tying the R/W pin low AND using 4 bit mode.
Kind of rolled the two together and confused them in my brain.

Dave
(going back to sleep now)

----- Original Message -----
> " In 4 bit mode, you cannot query the busy bit" ...
>  Don't tell my display this.  It doesn't know.  It's been checking
>  the busy bit in 4 bit mode now for over 4 years.

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