FreeBSD/Linux Kernel Cross Reference
sys/isa/isareg.h

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * Copyright (c) 1990 The Regents of the University of California.
      * All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * William Jolitz.
      *
     * 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.
     *
     *      from: @(#)isa.h 5.7 (Berkeley) 5/9/91
     * $FreeBSD: releng/12.0/sys/isa/isareg.h 326023 2017-11-20 19:43:44Z pfg $
     */
    
    #ifndef _ISA_ISA_H_
    #define _ISA_ISA_H_
    
    /*
     * ISA Bus conventions
     */
    
    /*
     * Input / Output Port Assignments
     */
    #ifndef IO_ISABEGIN
    #define IO_ISABEGIN     0x000           /* 0x000 - Beginning of I/O Registers */
    #define IO_ICU1         0x020           /* 8259A Interrupt Controller #1 */
    #define IO_KBD          0x060           /* 8042 Keyboard */
    #define IO_RTC          0x070           /* RTC */
    #define IO_ICU2         0x0A0           /* 8259A Interrupt Controller #2 */
    
    #define IO_MDA          0x3B0           /* Monochome Adapter */
    #define IO_VGA          0x3C0           /* E/VGA Ports */
    #define IO_CGA          0x3D0           /* CGA Ports */
    
    #endif /* !IO_ISABEGIN */
    
    /*
     * Input / Output Port Sizes
     */
    #define IO_CGASIZE      12              /* CGA controllers */
    #define IO_MDASIZE      12              /* Monochrome display controllers */
    #define IO_VGASIZE      16              /* VGA controllers */
    
    #endif /* !_ISA_ISA_H_ */

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