Y2_CFG_SPC
bus_write_4((sc)->msk_res[0], Y2_CFG_SPC + (reg), (val))
bus_write_2((sc)->msk_res[0], Y2_CFG_SPC + (reg), (val))
bus_write_1((sc)->msk_res[0], Y2_CFG_SPC + (reg), (val))
bus_read_4((sc)->msk_res[0], Y2_CFG_SPC + (reg))
bus_read_2((sc)->msk_res[0], Y2_CFG_SPC + (reg))
bus_read_1((sc)->msk_res[0], Y2_CFG_SPC + (reg))