49c46e1789
reasons: it won't attach as console, and there's currently no way to do keyboard input on TC machines), and has no real RAMDAC (colormap, cursor, etc.) support. Digital UNIX does not support CFB frame buffers in the Alpha, but they appear to work OK (with an appropriate monitor) in my 3000/300.
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* $NetBSD: cfbreg.h,v 1.1 1996/05/01 23:25:00 cgd Exp $ */
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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Color Frame Buffer definitions, from:
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* ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
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* (Revision 1.2)'', availalable via anonymous FTP from gatekeeper.dec.com.
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*
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* All definitions are in "dense" TurboChannel space.
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*/
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/*
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* Size of the CFB address space.
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*/
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#define CFB_SIZE 0x400000
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/*
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* Offsets into slot space of each functional unit.
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*/
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#define CFB_FB_OFFSET 0x000000 /* Frame buffer */
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#define CFB_FB_SIZE 0x100000
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#define CFB_RAMDAC_OFFSET 0x200000 /* Bt495 RAMDAC Registers */
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#define CFB_RAMDAC_SIZE 0x100000
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#define CFB_IREQCTRL_OFFSET 0x300000 /* IReq Control region */
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#define CFB_IREQCTRL_SIZE 0x080000
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/*
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* Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
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*/
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#define CFB_RAMDAC_ADDRLOW 0x0000 /* Address register low byte */
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#define CFB_RAMDAC_ADDRHIGH 0x0004 /* Address register high byte */
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#define CFB_RAMDAC_REGDATA 0x0008 /* Register addressed by addr reg */
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#define CFB_RAMDAC_CMAPDATA 0x000c /* Colormap loc addressed by addr reg */
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