FreeBSD/Linux Kernel Cross Reference
sys/i386at/cram.h

     /* 
      * Mach Operating System
      * Copyright (c) 1991,1990,1989 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /* 
     * HISTORY
     * $Log:        cram.h,v $
     * Revision 2.5  91/05/14  16:22:13  mrt
     *      Correcting copyright
     * 
     * Revision 2.4  91/02/05  17:16:50  mrt
     *      Changed to new Mach copyright
     *      [91/02/01  17:42:45  mrt]
     * 
     * Revision 2.3  90/11/26  14:49:30  rvb
     *      jsb bet me to XMK34, sigh ...
     *      [90/11/26            rvb]
     *      Synched 2.5 & 3.0 at I386q (r1.5.1.3) & XMK35 (r2.3)
     *      [90/11/15            rvb]
     * 
     * Revision 2.2  90/05/03  15:41:48  dbg
     *      First checkin.
     * 
     * Revision 1.5.1.2  90/02/28  15:49:23  rvb
     *      Fix numerous typo's in Olivetti disclaimer.
     *      [90/02/28            rvb]
     * 
     * Revision 1.5.1.1  90/01/08  13:31:57  rvb
     *      Add Olivetti copyright.
     *      [90/01/08            rvb]
     * 
     * Revision 1.5  89/09/25  12:26:32  rvb
     *      File was provided by Intel 9/18/89.
     *      [89/09/23            rvb]
     * 
     */
    
    /*
     * cram.h
     */
    
    /*
      Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
    Cupertino, California.
    
                    All Rights Reserved
    
      Permission to use, copy, modify, and distribute this software and
    its documentation for any purpose and without fee is hereby
    granted, provided that the above copyright notice appears in all
    copies and that both the copyright notice and this permission notice
    appear in supporting documentation, and that the name of Olivetti
    not be used in advertising or publicity pertaining to distribution
    of the software without specific, written prior permission.
    
      OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
    INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
    IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
    CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
    LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
    NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
    WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    */
    
    /* 
     * outb(CMOS_ADDR, addr);
     * result = inb(CMOS_DATA);
     * 
     * where "addr" tells what value you want to read (some are listed 
     * below).  Interrupts should be disabled while you do this.
     */
    
    /* I/O ports */
    
    #define CMOS_ADDR       0x70            /* port for CMOS ram address */
    #define CMOS_DATA       0x71            /* port for CMOS ram data */
    
    
   /* Addresses, related masks, and potential results */
   
   #define CMOS_EB         0x14            /* read Equipment Byte */
   #define CM_SCRMSK       0x30            /* mask for EB query to get screen */
   #define CM_EGA_VGA      0x00            /* "not CGA or MONO" */
   #define CM_CGA_40       0x10
   #define CM_CGA_80       0x20
   #define CM_MONO_80      0x30
   

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