1 /* $OpenBSD: ns16450reg.h,v 1.3 2003/06/02 23:28:02 millert Exp $ */
2 /* $NetBSD: ns16450reg.h,v 1.3 1994/10/27 04:18:42 cgd Exp $ */
3
4 /*-
5 * Copyright (c) 1991 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)ns16450.h 7.1 (Berkeley) 5/9/91
33 */
34
35 /*
36 * NS16450 UART registers
37 */
38
39 #define com_data 0 /* data register (R/W) */
40 #define com_dlbl 0 /* divisor latch low (W) */
41 #define com_dlbh 1 /* divisor latch high (W) */
42 #define com_ier 1 /* interrupt enable (W) */
43 #define com_iir 2 /* interrupt identification (R) */
44 #define com_lctl 3 /* line control register (R/W) */
45 #define com_cfcr 3 /* line control register (R/W) */
46 #define com_mcr 4 /* modem control register (R/W) */
47 #define com_lsr 5 /* line status register (R/W) */
48 #define com_msr 6 /* modem status register (R/W) */