+extern cnputc(); /* standard console putc */
+extern struct tty cons; /* standard console tty */
+struct tty *constty; /* pointer to console "window" tty */
+int (*v_putc)() = cnputc; /* routine to putc on virtual console */
+
+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 */
+