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Annotation of sys/arch/sparc/dev/bt445reg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: bt445reg.h,v 1.1 2003/06/17 21:21:31 miod Exp $       */
        !             2: /*
        !             3:  * Copyright (c) 2003, Miodrag Vallat.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  *
        !            14:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            15:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            16:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            17:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            18:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            19:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            20:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            21:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            22:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            23:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            24:  * POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: /*
        !            28:  * Actual BT445 register layout
        !            29:  */
        !            30:
        !            31: /* Read/write address */
        !            32: #define        BT445_ADDRESS                           0
        !            33:
        !            34: /*
        !            35:  * Access to a register is done by programming the address register with
        !            36:  * the low 8 bits, and then reading or writing at the register pointed out
        !            37:  * by the high 8 bits.
        !            38:  */
        !            39: #define        BT445_REGISTER_OFFSET(x)                ((x) & 0xff)
        !            40: #define        BT445_REGISTER_INDEX(x)                 (((x) >> 8) & 0xff)
        !            41:
        !            42: /* Palette data - 3 r/w cycles par address, and autoincrement */
        !            43: #define        BT445_PALDATA                           1
        !            44:
        !            45: /* Overlay palette data - 3 r/w cycles par address, and autoincrement */
        !            46: #define        BT445_OVPALDATA                         3
        !            47:
        !            48: /*
        !            49:  * Various registers (very incomplete...)
        !            50:  */
        !            51: #define        BT445_ID                                0x0200
        !            52: #define        BT445_REVISION                          0x0201
        !            53: