1 /* $NetBSD: grfabs_et.h,v 1.4 2011/10/04 04:50:20 chs Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Leo Weppelman. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Saved register-state of the ET4000 30 */ 31 typedef struct { 32 u_char misc_output; 33 u_char crt[25]; /* Std. VGA crt registers */ 34 u_char attr[25]; /* Std. VGA attr. registers */ 35 u_char grf[9]; /* Std. VGA grf. registers */ 36 u_char seq[5]; /* Std. VGA seq. registers */ 37 38 /* ET4000 extensions */ 39 u_char ext_start; /* Extra Crt registers */ 40 u_char compat_6845; 41 u_char overfl_high; 42 u_char hor_overfl; 43 u_char state_ctl; /* Extra Seq. registers */ 44 u_char aux_mode; 45 u_char seg_sel; /* Extra general register */ 46 } et_sv_reg_t; 47 48 typedef struct { 49 et_sv_reg_t sv_regs; /* saved card regs */ 50 int fb_size; /* # of shorts in sv_fb */ 51 u_short sv_fb[1]; /* saved frame buffer */ 52 /* actually longer... */ 53 } save_area_t; 54 55 void et_hwrest(et_sv_reg_t *); 56 void et_hwsave(et_sv_reg_t *); 57 int et_probe_card(void); 58 void et_probe_video(MODES *); 59