I've been playing with batch scripts over the weekend, and am successfully initialising the Bus Pirate into I2C mode and have a menu system working in command line.
I hope to be able to read and write values next, then I can add that to the script for easy reprogramming.
A few questions:
What speed should I set the I2C bus to?
What commands did you use on the Bus Pirate to successfully write to the AM503B?