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cfbreg.h revision 1.1.2.1 
      1  1.1.2.1  cgd /* $NetBSD: cfbreg.h,v 1.1.2.1 1997/06/01 04:12:08 cgd Exp $ */
      2      1.1  cgd 
      3      1.1  cgd /*
      4      1.1  cgd  * Copyright (c) 1996 Carnegie-Mellon University.
      5      1.1  cgd  * All rights reserved.
      6      1.1  cgd  *
      7      1.1  cgd  * Author: Chris G. Demetriou
      8      1.1  cgd  *
      9      1.1  cgd  * Permission to use, copy, modify and distribute this software and
     10      1.1  cgd  * its documentation is hereby granted, provided that both the copyright
     11      1.1  cgd  * notice and this permission notice appear in all copies of the
     12      1.1  cgd  * software, derivative works or modified versions, and any portions
     13      1.1  cgd  * thereof, and that both notices appear in supporting documentation.
     14      1.1  cgd  *
     15      1.1  cgd  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16      1.1  cgd  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17      1.1  cgd  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18      1.1  cgd  *
     19      1.1  cgd  * Carnegie Mellon requests users of this software to return to
     20      1.1  cgd  *
     21      1.1  cgd  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22      1.1  cgd  *  School of Computer Science
     23      1.1  cgd  *  Carnegie Mellon University
     24      1.1  cgd  *  Pittsburgh PA 15213-3890
     25      1.1  cgd  *
     26      1.1  cgd  * any improvements or extensions that they make and grant Carnegie the
     27      1.1  cgd  * rights to redistribute these changes.
     28      1.1  cgd  */
     29      1.1  cgd 
     30      1.1  cgd /*
     31      1.1  cgd  * Color Frame Buffer definitions, from:
     32      1.1  cgd  * ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
     33      1.1  cgd  * (Revision 1.2)'', availalable via anonymous FTP from gatekeeper.dec.com.
     34      1.1  cgd  *
     35      1.1  cgd  * All definitions are in "dense" TurboChannel space.
     36      1.1  cgd  */
     37      1.1  cgd 
     38      1.1  cgd /*
     39      1.1  cgd  * Size of the CFB address space.
     40      1.1  cgd  */
     41      1.1  cgd #define	CFB_SIZE		0x400000
     42      1.1  cgd 
     43      1.1  cgd /*
     44      1.1  cgd  * Offsets into slot space of each functional unit.
     45      1.1  cgd  */
     46      1.1  cgd #define	CFB_FB_OFFSET		0x000000	/* Frame buffer */
     47      1.1  cgd #define	CFB_FB_SIZE		0x100000
     48      1.1  cgd #define	CFB_RAMDAC_OFFSET	0x200000	/* Bt495 RAMDAC Registers */
     49      1.1  cgd #define	CFB_RAMDAC_SIZE		0x100000
     50      1.1  cgd #define	CFB_IREQCTRL_OFFSET	0x300000	/* IReq Control region */
     51      1.1  cgd #define	CFB_IREQCTRL_SIZE	0x080000
     52      1.1  cgd 
     53      1.1  cgd /*
     54      1.1  cgd  * Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
     55      1.1  cgd  */
     56      1.1  cgd #define	CFB_RAMDAC_ADDRLOW	0x0000	/* Address register low byte */
     57      1.1  cgd #define	CFB_RAMDAC_ADDRHIGH	0x0004	/* Address register high byte */
     58      1.1  cgd #define	CFB_RAMDAC_REGDATA	0x0008	/* Register addressed by addr reg */
     59      1.1  cgd #define	CFB_RAMDAC_CMAPDATA	0x000c	/* Colormap loc addressed by addr reg */
     60