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65 lines
3.0 KiB
C
65 lines
3.0 KiB
C
/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)ns16550.h 7.1 (Berkeley) 5/9/91
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* $FreeBSD$
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*/
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/*
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* NS16550 UART registers
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*/
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#ifdef PC98
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#define com_data 0x000 /* data register (R/W) */
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#define com_dlbl 0x000 /* divisor latch low (W) */
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#define com_dlbh 0x100 /* divisor latch high (W) */
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#define com_ier 0x100 /* interrupt enable (W) */
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#define com_iir 0x200 /* interrupt identification (R) */
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#define com_fifo 0x200 /* FIFO control (W) */
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#define com_lctl 0x300 /* line control register (R/W) */
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#define com_cfcr 0x300 /* line control register (R/W) */
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#define com_mcr 0x400 /* modem control register (R/W) */
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#define com_lsr 0x500 /* line status register (R/W) */
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#define com_msr 0x600 /* modem status register (R/W) */
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#else /* IBM-PC */
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#define com_data 0 /* data register (R/W) */
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#define com_dlbl 0 /* divisor latch low (W) */
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#define com_dlbh 1 /* divisor latch high (W) */
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#define com_ier 1 /* interrupt enable (W) */
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#define com_iir 2 /* interrupt identification (R) */
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#define com_fifo 2 /* FIFO control (W) */
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#define com_lctl 3 /* line control register (R/W) */
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#define com_cfcr 3 /* line control register (R/W) */
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#define com_mcr 4 /* modem control register (R/W) */
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#define com_lsr 5 /* line status register (R/W) */
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#define com_msr 6 /* modem status register (R/W) */
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#endif /* PC98 */
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