Lpc2000

Hi,

I am trying to use the IAP commands using lpc2114.
The result[0] is allways 0.
when the C compiler does not have -interwok option, the uC hangs.
Is there anything I forgot? is there any other configuration to the 
compiler any command to execute?

the code is:

#define IAP_LOCATION 0x7ffffff1

unsigned int command[5];
unsigned int result[2];

int main(void)
{
	typedef void (*IAP)(unsigned int [],unsigned int[]);
	IAP iap_entry;
	disableIRQ();
	iap_entry=(IAP) IAP_LOCATION;
	// get part ID
	command[0]=54;
	result[0]=0;
	iap_entry(command, result); // I do this just for a laugh
	enableIRQ();
}

thank.