I am using an EPM900 emulator to debug a LPC935 application that uses serial output. However, I get nothing in any of the serial windows of uV4 when I run it. I decided to start at the very beginning and loaded the "Hello" example project. Under simulation it works fine and I get the "Hello World" message repeated ad infinitum in the UART#1 window. Under EPM900 emulation it downloads fine and the LEDs flash correctly and the printf(..) instruction is being executed. However, I get nothing in any of the UART windows, including the Debug (printf) viewer. As an aside issue, why does uV4 need 3 UART windows PLUS a Debug (printf) window?