video.h revision 1.1
1 /* $NetBSD: video.h,v 1.1 1995/03/26 07:12:08 leo Exp $ */ 2 3 /* 4 * Copyright (c) 1995 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Leo Weppelman. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_VIDEO_H 34 #define _MACHINE_VIDEO_H 35 /* 36 * Access to circuitry for video 37 */ 38 39 #define VIDEO ((struct video *)AD_VIDEO) 40 41 struct video { 42 volatile char vdb[64]; /* sparsely filled */ 43 volatile u_short vd_st_rgb[16]; /* RGB for simultaneous colors (ST)*/ 44 volatile u_char vd_st_res; /* ST resolution */ 45 volatile char vd_fill1; /* filler */ 46 volatile u_short vd_tt_res; /* TT-resultion mode */ 47 volatile u_char vd_ste_hscroll; /* MEGA STe hor bitwise scroll */ 48 volatile u_char vd_fill2[411]; 49 volatile u_short vd_tt_rgb[256]; /* RGB for simultaneous TT colors */ 50 }; 51 52 #define vd_ramh vdb[ 1] /* base address Video RAM, high byte */ 53 #define vd_ramm vdb[ 3] /* base address Video RAM, mid byte */ 54 #define vd_raml vdb[13] /* base address Video RAM, low byte */ 55 #define vd_ptrh vdb[ 5] /* scan address Video RAM, high byte */ 56 #define vd_ptrm vdb[ 7] /* scan address Video RAM, mid byte */ 57 #define vd_ptrl vdb[ 9] /* scan address Video RAM, low byte */ 58 #define vd_sync vdb[10] /* synchronization mode */ 59 60 /* bits in vd_sync: */ 61 #define SYNC_EXT 0x01 /* extern sync */ 62 #define SYNC_50 0x02 /* 50 Hertz (used for color) */ 63 64 /* bits in vd_st_rgb[]: */ 65 #define RGB_B 0x0007 66 #define RGB_G 0x0070 67 #define RGB_R 0x0700 68 69 /* some values for vd_st_rgb[]: */ 70 #define RGB_BLACK 0x0000 71 #define RGB_RED 0x0700 72 #define RGB_GREEN 0x0070 73 #define RGB_BLUE 0x0007 74 #define RGB_WHITE 0x0777 75 #define RGB_MAGENTA 0x0707 76 #define RGB_CYAN 0x0077 77 #define RGB_YELLOW 0x0770 78 #define RGB_LGREY 0x0555 79 #define RGB_DGREY 0x0222 80 81 /* values for vd_st_res: */ 82 #define RES_LOW 0x00 /* 320x200, 16 colors */ 83 #define RES_MID 0x01 /* 640x200, 4 colors */ 84 #define RES_HIGH 0x02 /* 640x400, monochrome */ 85 86 /* masks for vd_tt_res: */ 87 #define RES_STLOW 0x0000 /* 320x200, 16 colors */ 88 #define RES_STMID 0x0100 /* 640x200, 4 colors */ 89 #define RES_STHIGH 0x0200 /* 640x400, monochrome */ 90 #define RES_TTMID 0x0400 /* 640x480, 16 colors */ 91 #define RES_TTHIGH 0x0600 /* 1280x960, monochrome */ 92 #define RES_TTLOW 0x0700 /* 320x480, 256 colors */ 93 #define TT_PALLET 0x000f /* Pallette number */ 94 #define TT_HYMONO 0x8000 /* Hyper mono mode */ 95 #define TT_SHOLD 0x1000 /* Sample/hold mode */ 96 97 /* 98 * Yahama YM-2149 Programmable Sound Generator 99 */ 100 101 #define SOUND ((struct sound *)AD_SOUND) 102 103 struct sound { 104 char sdb[4]; /* use only the even bytes */ 105 }; 106 107 #define sd_selr sdb[0] /* select register */ 108 #define sd_rdat sdb[0] /* read register data */ 109 #define sd_wdat sdb[2] /* write register data */ 110 111 /* 112 * Accessing the YM-2149 registers is indirect through ST-specific 113 * circuitry by writing the register number into sd_selr. 114 */ 115 #define YM_PA0 0 /* Period Channel A, bits 0-7 */ 116 #define YM_PA1 1 /* Period Channel A, bits 8-11 */ 117 #define YM_PB0 2 /* Period Channel B, bits 0-7 */ 118 #define YM_PB1 3 /* Period Channel B, bits 8-11 */ 119 #define YM_PC0 4 /* Period Channel C, bits 0-7 */ 120 #define YM_PC1 5 /* Period Channel C, bits 8-11 */ 121 #define YM_PNG 6 /* Period Noise Generator, bits 0-4 */ 122 #define YM_MFR 7 /* Multi Function Register */ 123 #define YM_VA 8 /* Volume Channel A */ 124 #define YM_VB 9 /* Volume Channel B */ 125 #define YM_VC 10 /* Volume Channel C */ 126 #define YM_PE0 11 /* Period Envelope, bits 0-7 */ 127 #define YM_PE1 12 /* Period Envelope, bits 8-15 */ 128 #define YM_WFE 13 /* Wave Form Envelope */ 129 #define YM_IOA 14 /* I/O port A */ 130 #define YM_IOB 15 /* I/O port B */ 131 132 /* bits in MFR: */ 133 #define SA_OFF 0x01 /* Sound Channel A off */ 134 #define SB_OFF 0x02 /* Sound Channel B off */ 135 #define SC_OFF 0x04 /* Sound Channel C off */ 136 #define NA_OFF 0x08 /* Noise Channel A off */ 137 #define NB_OFF 0x10 /* Noise Channel B off */ 138 #define NC_OFF 0x20 /* Noise Channel C off */ 139 #define PA_OUT 0x40 /* Port A for Output */ 140 #define PB_OUT 0x80 /* Port B for Output */ 141 142 /* bits in Vx: */ 143 #define VOLUME 0x0F /* 16 steps */ 144 #define ENVELOP 0x10 /* volume steered by envelope */ 145 146 /* bits in WFE: */ 147 #define WF_HOLD 0x01 /* hold after one period */ 148 #define WF_ALTERNAT 0x02 /* up and down (no saw teeth) */ 149 #define WF_ATTACK 0x04 /* start up */ 150 #define WF_CONTINUE 0x08 /* multiple periods */ 151 152 /* names for bits in Port A (ST specific): */ 153 #define PA_SIDEB 0x01 /* select floppy head - if double sided */ 154 #define PA_FLOP0 0x02 /* Drive Select Floppy 0 */ 155 #define PA_FLOP1 0x04 /* Drive Select Floppy 1 */ 156 #define PA_SRTS 0x08 /* Serial RTS */ 157 #define PA_SDTR 0x10 /* Serial DTR */ 158 #define PA_PSTROBE 0x20 /* Parallel Strobe */ 159 #define PA_USER 0x40 /* Free Pin on Monitor Connector */ 160 /* 0x80 reserved */ 161 162 #endif /* _MACHINE_VIDEO_H */ 163
Indexes created Sun Oct 19 02:09:48 GMT 2025