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/* $OpenBSD: ns16550reg.h,v 1.5 2003/06/02 23:28:02 millert Exp $ */
/* $NetBSD: ns16550reg.h,v 1.4 1994/10/27 04:18:43 cgd Exp $ */
/*-
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ns16550.h 7.1 (Berkeley) 5/9/91
*/
/*
* NS16550 (and above) UART registers
*/
#define com_data 0 /* data register (R/W) */
#define com_dlbl 0 /* divisor latch low (W) */
#define com_dlbh 1 /* divisor latch high (W) */
#define com_ier 1 /* interrupt enable (W) */
#define com_iir 2 /* interrupt identification (R) */
#define com_fifo 2 /* FIFO control (W) */
#define com_fctl 2 /* extended FIFO control (W) */
#define com_efr 2 /* extended features register (W) */
#define com_lctl 3 /* line control register (R/W) */
#define com_cfcr 3 /* line control register (R/W) */
#define com_mcr 4 /* modem control register (R/W) */
#define com_lsr 5 /* line status register (R/W) */
#define com_msr 6 /* modem status register (R/W) */
#define com_scratch 7 /* scratch register (R/W) */
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