Annotation of sys/arch/sparc/dev/bt445reg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bt445reg.h,v 1.1 2003/06/17 21:21:31 miod Exp $ */
! 2: /*
! 3: * Copyright (c) 2003, Miodrag Vallat.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: *
! 14: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 15: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 16: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 17: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 18: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 19: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 20: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 21: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 22: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 23: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 24: * POSSIBILITY OF SUCH DAMAGE.
! 25: */
! 26:
! 27: /*
! 28: * Actual BT445 register layout
! 29: */
! 30:
! 31: /* Read/write address */
! 32: #define BT445_ADDRESS 0
! 33:
! 34: /*
! 35: * Access to a register is done by programming the address register with
! 36: * the low 8 bits, and then reading or writing at the register pointed out
! 37: * by the high 8 bits.
! 38: */
! 39: #define BT445_REGISTER_OFFSET(x) ((x) & 0xff)
! 40: #define BT445_REGISTER_INDEX(x) (((x) >> 8) & 0xff)
! 41:
! 42: /* Palette data - 3 r/w cycles par address, and autoincrement */
! 43: #define BT445_PALDATA 1
! 44:
! 45: /* Overlay palette data - 3 r/w cycles par address, and autoincrement */
! 46: #define BT445_OVPALDATA 3
! 47:
! 48: /*
! 49: * Various registers (very incomplete...)
! 50: */
! 51: #define BT445_ID 0x0200
! 52: #define BT445_REVISION 0x0201
! 53:
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