60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* $NetBSD: cfbreg.h,v 1.2 1997/04/06 08:47:20 cgd Exp $ */
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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Color Frame Buffer definitions, from:
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* ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
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* (Revision 1.2)'', availalable via anonymous FTP from gatekeeper.dec.com.
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*
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* All definitions are in "dense" TurboChannel space.
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*/
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/*
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* Size of the CFB address space.
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*/
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#define CFB_SIZE 0x400000
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/*
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* Offsets into slot space of each functional unit.
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*/
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#define CFB_FB_OFFSET 0x000000 /* Frame buffer */
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#define CFB_FB_SIZE 0x100000
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#define CFB_RAMDAC_OFFSET 0x200000 /* Bt495 RAMDAC Registers */
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#define CFB_RAMDAC_SIZE 0x100000
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#define CFB_IREQCTRL_OFFSET 0x300000 /* IReq Control region */
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#define CFB_IREQCTRL_SIZE 0x080000
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/*
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* Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
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*/
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#define CFB_RAMDAC_ADDRLOW 0x0000 /* Address register low byte */
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#define CFB_RAMDAC_ADDRHIGH 0x0004 /* Address register high byte */
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#define CFB_RAMDAC_REGDATA 0x0008 /* Register addressed by addr reg */
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#define CFB_RAMDAC_CMAPDATA 0x000c /* Colormap loc addressed by addr reg */
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