Problems with linked list and xdata

I'm having a problem getting a linked list to work on Keil. I'm using an aduc842 microcontroller from Analog. Linked lists are something we do all the time in c and i'm baffled as to why i cant get it to work in this situation. This code works in the simulator but doesnt work on the actual hardware. Ive got 2k on chip xdata and it's configured as such. Ive tried using void * as well for the link node, which increases the size of the struct by one byte, and that didnt work either.

#include <ADuC842.h>
sbit led = 0xb4;
unsigned char xdata Store[1024] ;
unsigned char xdata * pStore ;
void xdata *  FetchMem ( unsigned int bytes ) {
	unsigned char xdata * ppStore ;
	ppStore = pStore ;
	pStore += bytes ;
	return ppStore ;
}

xdata struct Example {
	unsigned char a ;
	struct Example xdata * Next ;
} ;
struct Example xdata List ;
struct Example xdata * pList ;
int main (void ){
	unsigned char i ;
	FetchMem(1);
	pList=&List ;
	pList->a='a'; pList->Next = 0 ;
	{
		struct Example xdata * rec ;
		rec=FetchMem(sizeof(struct Example));
		rec->a='b'; rec->Next=0;
		pList->Next=rec; pList=rec;}
	{
		struct Example xdata * rec ;
		rec=FetchMem(sizeof(struct Example));
		rec->a='c'; rec->Next=0;
		pList->Next=rec; pList=rec;
	}
	{
		struct Example xdata * rec ;
		rec=FetchMem(sizeof(struct Example));
		rec->a='d'; rec->Next=0;
		pList->Next=rec; pList=rec;
	}
	pList=&List;
	for(;;){
		i=pList->a;
		if(pList->Next==0)break;
		pList=pList->Next;
	}
	led=!led;
	for(;;){}
}