Hm das müßte es doch sein oder !
Das ist aus den Header files des ethernat drivers
#ifndef __91C111_H__
#define __91C111_H__
#define LANREGBASE 0x80000000
#define LANADDR_BANK 0x8000000e
/*Bank 0*/
#define LANADDR_TCR 0x80000000
#define LANADDR_EPH_STATUS 0x80000002
#define LANADDR_RCR 0x80000004
#define LANADDR_COUNTER 0x80000006
#define LANADDR_MIR 0x80000008
#define LANADDR_RPCR 0x8000000A
/*Bank 1*/
#define LANADDR_CONFIG 0x80000000
#define LANADDR_BASE 0x80000002
#define LANADDR_IA01 0x80000004
#define LANADDR_IA23 0x80000006
#define LANADDR_IA45 0x80000008
#define LANADDR_GP 0x8000000A
#define LANADDR_CONTROL 0x8000000C
/*Bank 2*/
#define LANADDR_MMU 0x80000000
#define LANADDR_PNR 0x80000002
#define LANADDR_FIFO 0x80000004
#define LANADDR_POINTER 0x80000006
#define LANADDR_DATA 0x80000008
#define LANADDR_INTERRUPT 0x8000000C
/*Bank 3*/
#define LANADDR_MT01 0x80000000
#define LANADDR_MT23 0x80000002
#define LANADDR_MT45 0x80000004
#define LANADDR_MT67 0x80000006
#define LANADDR_MGMT 0x80000008
#define LANADDR_REVISION 0x8000000A
#define LANADDR_ERCV 0x8000000C