I picked up a couple of these from BG but haven't used them yet.  I was
looking forward to having the big display for a project.  But, now it
seems that they are more trouble than they are worth.  I will be
watching this thread in anticipation of someone getting the LCD to work.
For what it is worth... here is a note I found in the manual-

From the manual...
  NOTE:  When an MPU program with checking the Busy Flag(DB7) is made,
it must be necessary
  1/2Fosc is necessary for executing the next instruction by the falling
edge of the "E"
  signal after the Busy Flag(DB7) goes to "Low".
...So there you go.

>    ----- Original Message -----
On Friday, October 31, 2003 5:18 PM Jinx wrote:
<snip>
The other thing to look at would be timing. The HD44780
has a nominal Busy timeout for most instructions of 40us
and a 6us period after Busy is released when RAM can't
be read/written. Other controllers have different figures
for this. For example they may still be working on internal
register updating during the Busy period and so not have
a 6us post-Busy timeout
>

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