CST0 604 drivers/net/wan/hd64570.c sca_in(get_msci(port) + CST0, card), CST0 553 drivers/net/wan/hd64572.c sca_in(get_msci(port) + CST0, card), CST0 2148 drivers/tty/synclinkmp.c while((status = read_reg(info,CST0)) & BIT0)