From 4d0b594db6dd3dab010d253d09396368383a7f7c Mon Sep 17 00:00:00 2001 From: Michael Shalayeff Date: Mon, 23 Sep 1996 15:01:49 +0000 Subject: add mc6845 CRTC chip registers and definitions. derived from pcvt_hdr.h file. --- sys/dev/ic/mc6845.h | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 sys/dev/ic/mc6845.h (limited to 'sys') diff --git a/sys/dev/ic/mc6845.h b/sys/dev/ic/mc6845.h new file mode 100644 index 00000000000..e67851049cd --- /dev/null +++ b/sys/dev/ic/mc6845.h @@ -0,0 +1,101 @@ +/* $OpenBSD: mc6845.h,v 1.1 1996/09/23 15:01:48 mickey Exp $ */ + +/* + * Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch. + * Copyright (c) 1992, 1993 Brian Dunford-Shore. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Michael Shalayeff. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + + +#define MONO_BASE 0x3B4 /* crtc index register address mono */ +#define CGA_BASE 0x3D4 /* crtc index register address color */ + +#define CRTC_ADDR 0x00 /* index register */ + +#define CRTC_HTOTAL 0x00 /* horizontal total */ +#define CRTC_HDISPLE 0x01 /* horizontal display end */ +#define CRTC_HBLANKS 0x02 /* horizontal blank start */ +#define CRTC_HBLANKE 0x03 /* horizontal blank end */ +#define CRTC_HSYNCS 0x04 /* horizontal sync start */ +#define CRTC_HSYNCE 0x05 /* horizontal sync end */ +#define CRTC_VTOTAL 0x06 /* vertical total */ +#define CRTC_OVERFLL 0x07 /* overflow low */ +#define CRTC_IROWADDR 0x08 /* inital row address */ +#define CRTC_MAXROW 0x09 /* maximum row address */ +#define CRTC_CURSTART 0x0A /* cursor start row address */ +#define CURSOR_ON_BIT 0x20 /* cursor on/off on mda/cga/vga */ +#define CRTC_CUREND 0x0B /* cursor end row address */ +#define CRTC_STARTADRH 0x0C /* linear start address mid */ +#define CRTC_STARTADRL 0x0D /* linear start address low */ +#define CRTC_CURSORH 0x0E /* cursor address mid */ +#define CRTC_CURSORL 0x0F /* cursor address low */ +#define CRTC_VSYNCS 0x10 /* vertical sync start */ +#define CRTC_VSYNCE 0x11 /* vertical sync end */ +#define CRTC_VDE 0x12 /* vertical display end */ +#define CRTC_OFFSET 0x13 /* row offset */ +#define CRTC_ULOC 0x14 /* underline row address */ +#define CRTC_VBSTART 0x15 /* vertical blank start */ +#define CRTC_VBEND 0x16 /* vertical blank end */ +#define CRTC_MODE 0x17 /* CRTC mode register */ +#define CRTC_SPLITL 0x18 /* split screen start low */ + +/* start of ET4000 extensions */ + +#define CRTC_RASCAS 0x32 /* ras/cas configuration */ +#define CRTC_EXTSTART 0x33 /* extended start address */ +#define CRTC_COMPAT6845 0x34 /* 6845 comatibility control */ +#define CRTC_OVFLHIGH 0x35 /* overflow high */ +#define CRTC_SYSCONF1 0x36 /* video system configuration 1 */ +#define CRTC_SYSCONF2 0x36 /* video system configuration 2 */ + +/* start of WD/Paradise extensions */ + +#define CRTC_PR10 0x29 /* r/w unlocking */ +#define CRTC_PR11 0x2A /* ega switches */ +#define CRTC_PR12 0x2B /* scratch pad */ +#define CRTC_PR13 0x2C /* interlace h/2 start */ +#define CRTC_PR14 0x2D /* interlace h/2 end */ +#define CRTC_PR15 0x2E /* misc control #1 */ +#define CRTC_PR16 0x2F /* misc control #2 */ +#define CRTC_PR17 0x30 /* misc control #3 */ + /* 0x31 .. 0x3f reserved */ +/* Video 7 */ + +#define CRTC_V7ID 0x1f /* identification register */ + +/* Trident */ + +#define CRTC_MTEST 0x1e /* module test register */ +#define CRTC_SOFTPROG 0x1f /* software programming */ +#define CRTC_LATCHRDB 0x22 /* latch read back register */ +#define CRTC_ATTRSRDB 0x24 /* attribute state read back register*/ +#define CRTC_ATTRIRDB 0x26 /* attribute index read back register*/ +#define CRTC_HOSTAR 0x27 /* high order start address register */ + -- cgit v1.2.3