Yes, I did... I've already been bitten by that bug one
too many times.. But thanks!

-- Rob

--- James Paul <jim@JPES.COM> wrote:
>  Robert,
>
>  Did you set the oscillator for HS operation as opposed to XT when
>  you went to 20Mhz?  If not, the oscillator probably isn't starting
>  or running at 20Mhz.  Just a thought.
>
>                                           Regards,
>
>                                             Jim
>
>
>
> On Tue, 13 February 2001, Robert Shady wrote:
>
> >
> > I'm not sure if I should really latch on to this
> > thread or not with my own problems, but they might
> > be related to what your seeing as well, so I'll
> > post what's happened to me so far...  Which is
> > REALLY bizarre..
> >
> > *** WARNING -- THIS IS LONG! ***
> >
> > I've taken Mike's 2wirelcd circuit and wired it
> > up, downloaded his 2wirelcd.asm code, compiled,
> > and ran -- It worked fine @ 4mhz as stated.
> >
> > I need to be able to run it @ 20mhz, so I visited
> > the time delay code generator at:
> > http://www.piclist.com/cgi-bin/delay.exe
> > and generated a replacement 160usec delay and
> > 5msec delay and put it in a file called delay20.inc
> > (thinking I can also make one called delay4.inc and
> > just change 1 line of the code to switch between
> > 4mhz & 20mhz).  I switched everything to use the new
> > code and ran it @ 20mhz -- didn't work, tried it @
> > 4mhz -- didn't work.
> >
> > I revisited the delay code generator and generated
> > new 4mhz based delays for 160usec & 5msec and put
> > them in delay4.inc, compiled and ran @ 4mhz -- nothing.
> >
> > Now here's the really funky part... I took the routines
> > out of delay4.inc and put them in the lcd.asm code
> > compiled and ran @ 4mhz -- worked perfectly.
> >
> > So I took the routines out of delay20.inc and put them
> > in the lcd.asm code, compile & ran @ 20mhz -- nothing!
> >
> > Any clue?  Why would the routines work when compiled
> > directly into the code, but not included?  Also, I
> > couldn't even get the circuit to work just by
> > interfacing directly with the PIC, I had to use Mike's
> > little flip-flop circuit for some reason... Timing
> > issues maybe?
> >
> > Does anybody have 16F84 (actually 16F84A) code for
> > driving an LCD (preferrably with Mike's circuit, it's
> > nice only using 2 pins) running @ 20mhz?
> >
> > -- Rob
> >
> > > --- David VanHorn <dvanhorn@CEDAR.NET> wrote:
> > > > At 01:45 PM 2/13/01 +1100, Ian Hynes wrote:
> > > > >PICers,
> > > > >
> > > > >Sorry to be a pain but I'm totally stymied with this. It's a
> 16F84
> > > > >interfaced via 3 wires to an HD44780 LCD. I'm still learning
> this
> > > > >stuff so
> > > >
> > > > You know the 44780 needs three wires, plus four for data,
> right?
> > > >
> > > >
> > > >
> > > > --
> > > > Dave's Engineering Page: http://www.dvanhorn.org
> > > > Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9
> > > >
> > > > --
> > > > http://www.piclist.com hint: The list server can filter out
> > > subtopics
> > > > (like ads or off topics) for you. See
> > > http://www.piclist.com/#topics
> > > >
> > > >
> > >
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Get personalized email addresses from Yahoo! Mail - only $35
> > > a year!  http://personal.mail.yahoo.com/
> > >
> > > --
> > > http://www.piclist.com hint: The PICList is archived three
> different
> > > ways.  See http://www.piclist.com/#archives for details.
> > >
> > >
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Get personalized email addresses from Yahoo! Mail - only $35
> > a year!  http://personal.mail.yahoo.com/
> >
> > --
> > http://www.piclist.com hint: The PICList is archived three
> different
> > ways.  See http://www.piclist.com/#archives for details.
>
> jim@jpes.com
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>


__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail - only $35
a year!  http://personal.mail.yahoo.com/

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.