> And IMHO it should not be attacked with NOPs or other delays.
> The only real cure is using a shadow register

In a situation where you have pin transitions out of  your control,
for example pins on the same port as, but not related to the LCD,
that could change state, as could happen with a 4-bit connection,
that would be the best way. But in Lukas' case, where the traffic
is all one-way to the LCD and under his control (eventually ;-) ),
time between events should be sufficient. That's assuming the
cable length to the LCD isn't excessive or there's isn't anything
imposing a signal on it, like an inductive component or PSU noise

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist