1 #ifndef GXEMUL_VGA_H 2 #define GXEMUL_VGA_H 3 4 /* 5 * Copyright (C) 2005-2018 Anders Gavare. 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 are met: 9 * 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * 31 * VGA register definitions, used by src/devices/dev_vga.c. 32 */ 33 34 /* 35 * Registers (offset from 0x3C0): 36 */ 37 38 #define VGA_ATTRIBUTE_ADDR 0 /* R/W */ 39 #define VGA_ATTRIBUTE_DATA_WRITE 0 /* W */ 40 41 #define VGA_ATTRIBUTE_DATA_READ 1 /* R */ 42 43 #define VGA_INPUT_STATUS_0 2 /* R */ 44 45 #define VGA_MISC_OUTPUT_W 2 /* W */ 46 #define VGA_MISC_OUTPUT_CS360 0x04 47 #define VGA_MISC_OUTPUT_REN 0x02 48 #define VGA_MISC_OUTPUT_IOAS 0x01 49 50 #define VGA_SEQUENCER_ADDR 4 /* R/W */ 51 #define VGA_SEQUENCER_DATA 5 /* R/W */ 52 #define VGA_SEQ_RESET 0 53 #define VGA_SEQ_CLOCKING_MODE 1 54 #define VGA_SEQ_MAP_MASK 2 55 #define VGA_SEQ_CHARACTER_MAP_SELECT 3 56 #define VGA_SEQ_SEQUENCER_MEMORY_MODE 4 57 58 #define VGA_DAC_STATE 7 /* R */ 59 #define VGA_DAC_ADDR_READ 7 /* W */ 60 #define VGA_DAC_ADDR_WRITE 8 /* W */ 61 #define VGA_DAC_DATA 9 /* R/W */ 62 63 #define VGA_FEATURE_CONTROL 0xA /* R/W? */ 64 65 #define VGA_MISC_OUTPUT_R 0xC /* R */ 66 67 #define VGA_GRAPHCONTR_ADDR 0xE /* R/W */ 68 #define VGA_GRAPHCONTR_DATA 0xF /* R/W */ 69 #define VGA_GRAPHCONTR_SETRESET 0 70 #define VGA_GRAPHCONTR_ENABLE 1 71 #define VGA_GRAPHCONTR_COLORCMP 2 72 #define VGA_GRAPHCONTR_DATAROTATE 3 73 #define VGA_GRAPHCONTR_READMAPSELECT 4 74 #define VGA_GRAPHCONTR_GRAPHICSMODE 5 75 #define VGA_GRAPHCONTR_MISC 6 76 #define VGA_GRAPHCONTR_COLORDONTCARE 7 77 #define VGA_GRAPHCONTR_MASK 8 78 79 #define VGA_CRTC_ADDR 0x14 /* R/W */ 80 #define VGA_CRTC_DATA 0x15 /* R/W */ 81 #define VGA_CRTC_CURSOR_SCANLINE_START 0x0a 82 #define VGA_CRTC_CURSOR_SCANLINE_END 0x0b 83 #define VGA_CRTC_START_ADDR_HIGH 0x0c 84 #define VGA_CRTC_START_ADDR_LOW 0x0d 85 #define VGA_CRTC_CURSOR_LOCATION_HIGH 0x0e 86 #define VGA_CRTC_CURSOR_LOCATION_LOW 0x0f 87 88 #define VGA_INPUT_STATUS_1 0x1A /* R */ 89 #define VGA_IS1_DISPLAY_VRETRACE 0x08 90 #define VGA_IS1_DISPLAY_DISPLAY_DISABLE 0x01 91 92 #endif /* GXEMUL_VGA_H */ 93