live input/output to/from application

[Rickertsen2]

After having been down the coprocessor route, i have concluded that they are unnecessary unless you are doing something *super* special. The RC is more powerful than most think. I think coprocs are cool but do not add alot of functionality you did not already have. With a coproc however, you have more stuff to go wrong and more things that you will have to futz with and waste your time.

Originally Posted by Ben Englert

I was not aware that the iPod had a serial port - is that how it interfaces with the accessories?

I thought it used a USB host controller over the dock connector.

Modern ipods have a serial port, a usb port(not a host port), and a firewire port on the dock connector.

There is also serial data through the headphone jack.