DCONS_GDB
dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB);
dcons_detach(DCONS_GDB);
struct dcons_softc *dc = &sc[DCONS_GDB];
struct dcons_softc *dc = &sc[DCONS_GDB];
dc->port[DCONS_GDB].sport);
while ((len = dconschat_read_dcons(dc, DCONS_GDB, &buf[0],
#define IS_GDB(p) ((p)->port == DCONS_GDB)