+extern cnputc(); /* standard console putc */
+int (*v_putc)() = cnputc; /* routine to putc on virtual console */
+extern struct tty cons; /* standard console tty */
+struct tty *constty; /* pointer to console "window" tty */
+
+#ifdef KADB
+extern cngetc(); /* standard console getc */
+extern cnpoll();
+int (*v_getc)() = cngetc; /* "" getc from virtual console */
+int (*v_poll)() = cnpoll; /* kdb hook to enable input polling */
+#endif
+
+extern cnputc(); /* standard console putc */
+extern struct tty cons; /* standard console tty */
+struct tty *constty; /* pointer to console "window" tty */
+int (*v_console)() = cnputc; /* routine to putc on virtual console */
+