> That's probably good (but you may have got it accidentally or
> even something that looks like what you wanted). You should
> separate those bit commands in lcd_set with NOP. I guess
> your micro speed is 4MHz or less if you're using XT, so one
> NOP should be enough. Read-modify-write can be a real
> problem and cause confusing effects, don't under-estimate it

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

Wouter van Ooijen

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