HelenOS sources

PBM_OBIO_BASE      95 uspace/drv/platform/sun4u/sun4u.c 			.address = PBM_BASE + PBM_OBIO_BASE,
PBM_OBIO_BASE     110 uspace/drv/platform/sun4u/sun4u.c 			.base = PBM_BASE + PBM_OBIO_BASE,
HelenOS homepage, sources at GitHub