/* $NetBSD: cfbreg.h,v 1.4 2022/06/03 17:04:54 andvar 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)''. * * 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 */ |