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/* $OpenBSD: cfbreg.h,v 1.4 2003/10/18 20:14:41 jmc Exp $ */
/* $NetBSD: cfbreg.h,v 1.1 1996/05/01 23:25:00 cgd Exp $ */
/*
* Copyright (c) 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* 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 the
* rights to redistribute these changes.
*/
/*
* Color Frame Buffer definitions, from:
* ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
* (Revision 1.2)'', available via anonymous FTP from gatekeeper.dec.com.
*
* All definitions are in "dense" TurboChannel space.
*/
/*
* Size of the CFB address space.
*/
#define CFB_SIZE 0x400000
/*
* Offsets into slot space of each functional unit.
*/
#define CFB_FB_OFFSET 0x000000 /* Frame buffer */
#define CFB_FB_SIZE 0x100000
#define CFB_RAMDAC_OFFSET 0x200000 /* Bt495 RAMDAC Registers */
#define CFB_RAMDAC_SIZE 0x100000
#define CFB_IREQCTRL_OFFSET 0x300000 /* IReq Control region */
#define CFB_IREQCTRL_SIZE 0x080000
/*
* Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
*/
#define CFB_RAMDAC_ADDRLOW 0x0000 /* Address register low byte */
#define CFB_RAMDAC_ADDRHIGH 0x0004 /* Address register high byte */
#define CFB_RAMDAC_REGDATA 0x0008 /* Register addressed by addr reg */
#define CFB_RAMDAC_CMAPDATA 0x000c /* Colormap loc addressed by addr reg */
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