After serveral trys to implement a 4 bit Interface to an HD44780 driven 2 x
16 LCD display I desperately seek some help.
I tried to use the code snippet Dave Duley posted some time ago.
Unfortunately it just did not work.
Perhaps I failed, because the source covered only the used functions and no
main program...
The Microchip AN 587 example code uses a 16c5x device.
As the only Pic Controller I have here is a 16c84 I ran into serious
problems
because i do not know all the registers and ports they use.
I am not sure in what order I should connect the RB lines to the Display and
if I should use rb0-rb3 or rb4-rb7 as data lines.
I tried Myke Predkos Thermo5 Basic Example which worked fine, but is an 8
bit interface without usage of the LCD R/W line.

Thanks for any help
Ralf