Here is a quick and dirty guide as to what compilers will allow you create games for which platforms. So far...

Free Pascal (open source / free)

:arrow: GameBoy Advance -- Native as of 2.1.4 and up.
:arrow: Nintendo DS -- Native as of 2.1.4 and up.
:arrow: GP2X -- Uses the ARM/Linux target. Working, but full support libraries still in progress.
:arrow: XBox -- Very, very early pioneering in progress. Nothing practical yet.

Chrome

:arrow: XBox 360 / XNA -- Non-native, some support issues still revolve around Visual Studio properly supporting the XNA framework fully.