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