Pokey is the result of alot of study of other emulator source
code for various platforms.  Foremost I should thank David Firth.  His 
Atari800 emulator for the UNIX/Amiga platforms was used as a framework for
Pokey.  David and all who worked with him have done an amazing job with 
Atari800 and I owe them all a million thanks.  Besides the framework itself
I used some parts of Atari800 in Pokey.