/* $OpenBSD: bt485reg.h,v 1.2 2001/04/21 20:03:55 aaron Exp $ */
/* $NetBSD: bt485reg.h,v 1.1 1998/04/15 20:16:30 drochner Exp $ */

/*
 * Copyright (c) 1995, 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.
 */

/*
 * Register definitions for the Brooktree Bt485A 170MHz Monolithic
 * CMOS True-Color RAMDAC.
 */


/*
 * Directly-addressed registers.
 */
#define BT485_REG_PCRAM_WRADDR  0x00
#define BT485_REG_PALETTE       0x01
#define BT485_REG_PIXMASK       0x02
#define BT485_REG_PCRAM_RDADDR  0x03
#define BT485_REG_COC_WRADDR    0x04
#define BT485_REG_COCDATA       0x05
#define BT485_REG_COMMAND_0     0x06
#define BT485_REG_COC_RDADDR    0x07
#define BT485_REG_COMMAND_1     0x08
#define BT485_REG_COMMAND_2     0x09
#define BT485_REG_STATUS        0x0a
#define BT485_REG_EXTENDED      BT485_REG_STATUS
#define BT485_REG_CURSOR_RAM    0x0b
#define BT485_REG_CURSOR_X_LOW  0x0c
#define BT485_REG_CURSOR_X_HIGH 0x0d
#define BT485_REG_CURSOR_Y_LOW  0x0e
#define BT485_REG_CURSOR_Y_HIGH 0x0f

#define BT485_REG_MAX           0x0f

#define BT485_IREG_STATUS       0x00
#define BT485_IREG_COMMAND_3    0x01
#define BT485_IREG_COMMAND_4    0x02
#define BT485_IREG_RSA          0x20
#define BT485_IREG_GSA          0x21
#define BT485_IREG_BSA          0x22