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+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * File: serial_defs.h
+ * Author: Alessandro Forin, Carnegie Mellon University
+ * Date: 7/91
+ *
+ * Generic console driver for serial-line based consoles.
+ */
+
+
+/*
+ * Common defs
+ */
+
+extern int (*console_probe)(), (*console_param)(), (*console_start)(),
+ (*console_putc)(), (*console_getc)(),
+ (*console_pollc)(), (*console_mctl)(), (*console_softCAR)();
+extern cngetc(), cnmaygetc(), cnputc(), rcputc();
+
+extern struct tty *console_tty[];
+extern int rcline, cnline;
+extern int console;
+
+/* Simple one-char-at-a-time scheme */
+extern cons_simple_tint(), cons_simple_rint();
+
+#define CONS_ERR_PARITY 0x1000
+#define CONS_ERR_BREAK 0x2000
+#define CONS_ERR_OVERRUN 0x4000