The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/isa.h

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    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * William Jolitz.
    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  * 4. 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  *      from: @(#)isa.h 5.7 (Berkeley) 5/9/91
   33  * $FreeBSD$
   34  */
   35 
   36 #ifdef PC98
   37 #error isa.h is included from PC-9801 source
   38 #endif
   39 
   40 #ifndef _I386_ISA_ISA_H_
   41 #define _I386_ISA_ISA_H_
   42 
   43 /* BEWARE:  Included in both assembler and C code */
   44 
   45 /*
   46  * ISA Bus conventions
   47  */
   48 
   49 /*
   50  * Input / Output Port Assignments
   51  */
   52 #ifndef IO_ISABEGIN
   53 #define IO_ISABEGIN     0x000           /* 0x000 - Beginning of I/O Registers */
   54 
   55                 /* CPU Board */
   56 #define IO_ICU1         0x020           /* 8259A Interrupt Controller #1 */
   57 #define IO_PMP1         0x026           /* 82347 Power Management Peripheral */
   58 #define IO_KBD          0x060           /* 8042 Keyboard */
   59 #define IO_RTC          0x070           /* RTC */
   60 #define IO_NMI          IO_RTC          /* NMI Control */
   61 #define IO_ICU2         0x0A0           /* 8259A Interrupt Controller #2 */
   62 
   63                 /* Cards */
   64 #define IO_VGA          0x3C0           /* E/VGA Ports */
   65 #define IO_CGA          0x3D0           /* CGA Ports */
   66 #define IO_MDA          0x3B0           /* Monochome Adapter */
   67 
   68 #define IO_ISAEND       0x3FF           /* End (actually Max) of I/O Regs */
   69 #endif /* !IO_ISABEGIN */
   70 
   71 /*
   72  * Input / Output Port Sizes - these are from several sources, and tend
   73  * to be the larger of what was found.
   74  */
   75 #ifndef IO_ISASIZES
   76 #define IO_ISASIZES
   77 
   78 #define IO_CGASIZE      12              /* CGA controllers */
   79 #define IO_MDASIZE      12              /* Monochrome display controllers */
   80 #define IO_VGASIZE      16              /* VGA controllers */
   81 
   82 #endif /* !IO_ISASIZES */
   83 
   84 /*
   85  * Input / Output Memory Physical Addresses
   86  */
   87 #ifndef IOM_BEGIN
   88 #define IOM_BEGIN       0x0A0000        /* Start of I/O Memory "hole" */
   89 #define IOM_END         0x100000        /* End of I/O Memory "hole" */
   90 #define IOM_SIZE        (IOM_END - IOM_BEGIN)
   91 #endif /* !IOM_BEGIN */
   92 
   93 /*
   94  * RAM Physical Address Space (ignoring the above mentioned "hole")
   95  */
   96 #ifndef RAM_BEGIN
   97 #define RAM_BEGIN       0x0000000       /* Start of RAM Memory */
   98 #define RAM_END         0x1000000       /* End of RAM Memory */
   99 #define RAM_SIZE        (RAM_END - RAM_BEGIN)
  100 #endif /* !RAM_BEGIN */
  101 
  102 #endif /* !_I386_ISA_ISA_H_ */

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