Annotation of sys/arch/alpha/include/cfbreg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cfbreg.h,v 1.4 2003/10/18 20:14:41 jmc Exp $ */
! 2: /* $NetBSD: cfbreg.h,v 1.1 1996/05/01 23:25:00 cgd Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1996 Carnegie-Mellon University.
! 6: * All rights reserved.
! 7: *
! 8: * Author: Chris G. Demetriou
! 9: *
! 10: * Permission to use, copy, modify and distribute this software and
! 11: * its documentation is hereby granted, provided that both the copyright
! 12: * notice and this permission notice appear in all copies of the
! 13: * software, derivative works or modified versions, and any portions
! 14: * thereof, and that both notices appear in supporting documentation.
! 15: *
! 16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 19: *
! 20: * Carnegie Mellon requests users of this software to return to
! 21: *
! 22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 23: * School of Computer Science
! 24: * Carnegie Mellon University
! 25: * Pittsburgh PA 15213-3890
! 26: *
! 27: * any improvements or extensions that they make and grant Carnegie the
! 28: * rights to redistribute these changes.
! 29: */
! 30:
! 31: /*
! 32: * Color Frame Buffer definitions, from:
! 33: * ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
! 34: * (Revision 1.2)'', available via anonymous FTP from gatekeeper.dec.com.
! 35: *
! 36: * All definitions are in "dense" TurboChannel space.
! 37: */
! 38:
! 39: /*
! 40: * Size of the CFB address space.
! 41: */
! 42: #define CFB_SIZE 0x400000
! 43:
! 44: /*
! 45: * Offsets into slot space of each functional unit.
! 46: */
! 47: #define CFB_FB_OFFSET 0x000000 /* Frame buffer */
! 48: #define CFB_FB_SIZE 0x100000
! 49: #define CFB_RAMDAC_OFFSET 0x200000 /* Bt495 RAMDAC Registers */
! 50: #define CFB_RAMDAC_SIZE 0x100000
! 51: #define CFB_IREQCTRL_OFFSET 0x300000 /* IReq Control region */
! 52: #define CFB_IREQCTRL_SIZE 0x080000
! 53:
! 54: /*
! 55: * Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
! 56: */
! 57: #define CFB_RAMDAC_ADDRLOW 0x0000 /* Address register low byte */
! 58: #define CFB_RAMDAC_ADDRHIGH 0x0004 /* Address register high byte */
! 59: #define CFB_RAMDAC_REGDATA 0x0008 /* Register addressed by addr reg */
! 60: #define CFB_RAMDAC_CMAPDATA 0x000c /* Colormap loc addressed by addr reg */
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