Annotation of sys/arch/alpha/include/cfbreg.h, Revision 1.1.1.1
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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