Thank you for the library. It is very nearly what I need to access some non memory devices only available with multiplexed address/data busses. http://mektronixtech.com/
My application uses 4 of these chips. Using malloc in this case would be a disaster. I need to read from and write to specific addresses. With partial addressing to control the CS lines of each chip, the code I am left to write is minimal. Any reason this wouldn't work with teensy2++? The chip is different, an AT90USB1286, but I think the register defines are the same. Leonardo might work too.