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      1 /* $NetBSD: bt485reg.h,v 1.3 2005/12/11 12:21:26 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995, 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 (at) 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  * Register definitions for the Brooktree Bt485A 170MHz Monolithic
     32  * CMOS True-Color RAMDAC.
     33  */
     34 
     35 
     36 /*
     37  * Directly-addressed registers.
     38  */
     39 #define	BT485_REG_PCRAM_WRADDR	0x00
     40 #define	BT485_REG_PALETTE	0x01
     41 #define	BT485_REG_PIXMASK	0x02
     42 #define	BT485_REG_PCRAM_RDADDR	0x03
     43 #define	BT485_REG_COC_WRADDR	0x04
     44 #define	BT485_REG_COCDATA	0x05
     45 #define	BT485_REG_COMMAND_0	0x06
     46 #define	BT485_REG_COC_RDADDR	0x07
     47 #define	BT485_REG_COMMAND_1	0x08
     48 #define	BT485_REG_COMMAND_2	0x09
     49 #define	BT485_REG_STATUS	0x0a
     50 #define	BT485_REG_EXTENDED	BT485_REG_STATUS
     51 #define	BT485_REG_CURSOR_RAM	0x0b
     52 #define	BT485_REG_CURSOR_X_LOW	0x0c
     53 #define	BT485_REG_CURSOR_X_HIGH	0x0d
     54 #define	BT485_REG_CURSOR_Y_LOW	0x0e
     55 #define	BT485_REG_CURSOR_Y_HIGH	0x0f
     56 
     57 #define	BT485_REG_MAX		0x0f
     58 
     59 #define	BT485_IREG_STATUS	0x00
     60 #define	BT485_IREG_COMMAND_3	0x01
     61 #define	BT485_IREG_COMMAND_4	0x02
     62 #define	BT485_IREG_RSA		0x20
     63 #define	BT485_IREG_GSA		0x21
     64 #define	BT485_IREG_BSA		0x22
     65