Lpc2000

Is there any way to reset the processor from within the firmware?

I am currently using the Watchdog feature, and I know if I stop 
toggling the watchdog then my processor will time out and reset.

However, I need to be able to do different things depending on 
the 'cause' of the reset...

ie if its a watchdog timeout that caused reset I need to do X,Y,Z 
before normal operation
but if its a software triggered reset (eg after I have updated a 
parameter or something in flash) then I only want it to do Y,Z

Obviously I could use some external hardware, however is there any 
way to do it in software????

any help is appreciated!
cheers,

pete