extern const struct consw newport_con; /* SGI Newport console */
extern const struct consw prom_con; /* SPARC PROM console */
+int con_is_bound(const struct consw *csw);
+int register_con_driver(const struct consw *csw, int first, int last);
+int unregister_con_driver(const struct consw *csw);
int take_over_console(const struct consw *sw, int first, int last, int deflt);
void give_up_console(const struct consw *sw);
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/* scroll */
#define SM_UP (1)
#define SM_DOWN (2)