ns16550reg.h Source File

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ns16550reg.h
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1 #ifndef NS16550REG_H
2 #define NS16550REG_H
3 
4 /* $NetBSD: ns16550reg.h,v 1.5 2000/05/16 00:18:44 thorpej Exp $ */
5 
6 /*-
7  * Copyright (c) 1991 The Regents of the University of California.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in the
17  * documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  * must display the following acknowledgement:
20  * This product includes software developed by the University of
21  * California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  * may be used to endorse or promote products derived from this software
24  * without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  *
38  * @(#)ns16550.h 7.1 (Berkeley) 5/9/91
39  */
40 
41 /*
42  * NS16550 UART registers
43  */
44 
45 #define com_data 0 /* data register (R/W) */
46 #define com_dlbl 0 /* divisor latch low (W) */
47 #define com_dlbh 1 /* divisor latch high (W) */
48 #define com_ier 1 /* interrupt enable (W) */
49 #define com_iir 2 /* interrupt identification (R) */
50 #define com_fifo 2 /* FIFO control (W) */
51 #define com_lctl 3 /* line control register (R/W) */
52 #define com_cfcr 3 /* line control register (R/W) */
53 #define com_mcr 4 /* modem control register (R/W) */
54 #define com_lsr 5 /* line status register (R/W) */
55 #define com_msr 6 /* modem status register (R/W) */
56 #define com_scratch 7 /* scratch register (R/W) */
57 
58 #endif /* NS16550REG_H */

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