GDT_I960_SZ
#define GDT_MPR_IC GDT_I960_SZ
#define GDT_MPR_6SR (GDT_I960_SZ + 0x3000 - GDT_SRAM_SZ)
bus_space_set_region_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_I960_SZ, htole32(0),