We have some test code that runs on an ADuC834. This works fine. The parts appear to have equivalent memory. Even for trivial examples, we are having tons of problems with the ADuC832 component. We did change the device to ADuC832 in the Keil IDE. We also changed the includes from ADuC834 to ADuC832. There are even problems with a simple _getkey() followed by putchar(). The eval board is an EVAL-ADUC832QS.