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Annotation of sys/arch/alpha/include/cfbreg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: cfbreg.h,v 1.4 2003/10/18 20:14:41 jmc Exp $  */
        !             2: /*     $NetBSD: cfbreg.h,v 1.1 1996/05/01 23:25:00 cgd Exp $   */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1996 Carnegie-Mellon University.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Author: Chris G. Demetriou
        !             9:  *
        !            10:  * Permission to use, copy, modify and distribute this software and
        !            11:  * its documentation is hereby granted, provided that both the copyright
        !            12:  * notice and this permission notice appear in all copies of the
        !            13:  * software, derivative works or modified versions, and any portions
        !            14:  * thereof, and that both notices appear in supporting documentation.
        !            15:  *
        !            16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
        !            18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            19:  *
        !            20:  * Carnegie Mellon requests users of this software to return to
        !            21:  *
        !            22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            23:  *  School of Computer Science
        !            24:  *  Carnegie Mellon University
        !            25:  *  Pittsburgh PA 15213-3890
        !            26:  *
        !            27:  * any improvements or extensions that they make and grant Carnegie the
        !            28:  * rights to redistribute these changes.
        !            29:  */
        !            30:
        !            31: /*
        !            32:  * Color Frame Buffer definitions, from:
        !            33:  * ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
        !            34:  * (Revision 1.2)'', available via anonymous FTP from gatekeeper.dec.com.
        !            35:  *
        !            36:  * All definitions are in "dense" TurboChannel space.
        !            37:  */
        !            38:
        !            39: /*
        !            40:  * Size of the CFB address space.
        !            41:  */
        !            42: #define        CFB_SIZE                0x400000
        !            43:
        !            44: /*
        !            45:  * Offsets into slot space of each functional unit.
        !            46:  */
        !            47: #define        CFB_FB_OFFSET           0x000000        /* Frame buffer */
        !            48: #define        CFB_FB_SIZE             0x100000
        !            49: #define        CFB_RAMDAC_OFFSET       0x200000        /* Bt495 RAMDAC Registers */
        !            50: #define        CFB_RAMDAC_SIZE         0x100000
        !            51: #define        CFB_IREQCTRL_OFFSET     0x300000        /* IReq Control region */
        !            52: #define        CFB_IREQCTRL_SIZE       0x080000
        !            53:
        !            54: /*
        !            55:  * Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
        !            56:  */
        !            57: #define        CFB_RAMDAC_ADDRLOW      0x0000  /* Address register low byte */
        !            58: #define        CFB_RAMDAC_ADDRHIGH     0x0004  /* Address register high byte */
        !            59: #define        CFB_RAMDAC_REGDATA      0x0008  /* Register addressed by addr reg */
        !            60: #define        CFB_RAMDAC_CMAPDATA     0x000c  /* Colormap loc addressed by addr reg */