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No book can be effective without information being shared by some, amplified by others, and absorbed by many. This is my fourth work in 12 years—meager by the standards of those who are able to churn thousands of pages each year for us to enjoy—regardless a labor of enjoyment and enlightenment. There are many to acknowledge as such an effort is conceived, created, implemented, and distributed. Writing a book may be the easiest part. Producing one that delivers useful information, looks good, and makes sense is the task of many people behind the scenes. In this case there is no question where to start in acknowledging and appreciating those involved. Judy—my beloved acquisitions editor. She got stuck with me and “IRQ, DMA, & I/O” back in 1995 and encouraged me through a lot of interesting work since that eventually led to the conception of this project. I am forever grateful! Pat