> Here's the code:
>
> #include <htc.h>
>
> __CONFIG(INTIO & WDTDIS & PWRTDIS & MCLREN & UNPROTECT & BORDIS & LVPDIS);
>
> #define RS RA2
> #define RW RA3
> #define E  RA4
> #define D4 RB0
> #define D5 RB1
> #define D6 RB2
> #define D7 RB3


Without digging extensively in to your code, I note that you're driving E
with RA4, which is an open drain output. Do you have a pull-up on that
line?

Harold



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