> > I think that there was a tutorial on graphics displays
in EPE mag about a year ago. <<

 www.labcenter.co.uk  took the direct source code of the EPE tut. and hooked
up the circuit in it's simulator Proteus lite 5.2 . And this executed the
877 and lcd in real time on my 450mhz .
These demo's circuit diagramns could not be modified unless registered , but
you could modify the source code . It is a great learning tool , also for
experimenting first time with  lcd matrix display using that particular
chip.(lcds simulated HD44780  / Graphical LCD Display Model (T6963C) / +
PIC16F873A, PIC16F874A, PIC16F876A, PIC16F877A.
+PIC16x83 and PIC16x84 ... digital behaviour .

Also the demo came with a few other circuits ( modify code only ) like 8051
/ '51 Basic / and a couple of Pic circuits - these are a great breadboard
for begginners .

Don't think that the registering will be fun to the wallet , though . Seems
worth it though .

Vis Naicker

cut'n'paste from their help file docs :
======================================
>>>
This sample is taken from an article in Everyday Practical Electronics by
John Becker and consists of a tutorial in controlling a PG12864F LCD display
using a PIC16F877 processor.

To operate the sample, press the PLAY button, and then click the pushbutton
switch on the circuit to step through the various demonstrations contained
with John Becker's code.

As with other VSM samples, you may modify the source code even if you have
not registered your copy of Proteus Lite or are using the Proteus
Professional demonstration. But the sample will not simulate on an
unregistered copy if you modify the electrical connectivity.
<<<<
>>>
This sample implements a simple digital clock using a PIC 16F84
microcontroller
>>>
 ...a trivial controller for a set of traffic lights using a PIC 16F84
microcontroller.
>>>
 use of serial LCD displays
>>>
...ADC module in the PIC16F877
>>>
combination of the PIC 16F84 model with the digital sounder model to
implement a novelty/musical doorbell.  On a Pentium II or better PC, the
simulated PIC will run fast enough to generate audio tones in real time!

With apologies to J.S Bach and W.A. Mozart..

 =====================================

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