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dosbox-wii/src/ints/int10_modes.cpp

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#include <string.h>
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#include "dosbox.h"
#include "mem.h"
#include "inout.h"
#include "int10.h"
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#include "mouse.h"
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#include "vga.h"
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#define _EGA_HALF_CLOCK 0x0001
#define _EGA_LINE_DOUBLE 0x0002
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#define SEQ_REGS 0x05
#define GFX_REGS 0x09
#define ATT_REGS 0x15
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VideoModeBlock ModeList_VGA[]={
/* mode ,type ,sw ,sh ,tw ,th ,cw,ch ,pt,pstart ,plength,htot,vtot,hde,vde special flags */
{ 0x000 ,M_TEXT ,320 ,400 ,40 ,25 ,9 ,16 ,8 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x001 ,M_TEXT ,320 ,400 ,40 ,25 ,9 ,16 ,8 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x002 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB8000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x003 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB8000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x004 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE},
{ 0x005 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE},
{ 0x006 ,M_CGA2 ,640 ,200 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE },
{ 0x007 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB0000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x00D ,M_EGA16 ,320 ,200 ,40 ,25 ,8 ,8 ,8 ,0xA0000 ,0x2000 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE },
{ 0x00E ,M_EGA16 ,640 ,200 ,80 ,25 ,8 ,8 ,4 ,0xA0000 ,0x4000 ,100 ,449 ,80 ,400 ,_EGA_LINE_DOUBLE },
{ 0x00F ,M_EGA16 ,640 ,350 ,80 ,25 ,8 ,14 ,2 ,0xA0000 ,0x8000 ,100 ,449 ,80 ,400 ,0 },/*was EGA_2*/
{ 0x010 ,M_EGA16 ,640 ,350 ,80 ,25 ,8 ,14 ,1 ,0xA0000 ,0x8000 ,100 ,449 ,80 ,350 ,0 },
{ 0x011 ,M_EGA16 ,640 ,480 ,80 ,30 ,8 ,16 ,1 ,0xA0000 ,0xA000 ,100 ,525 ,80 ,480 ,0 },/*was EGA_2 */
{ 0x012 ,M_EGA16 ,640 ,480 ,80 ,30 ,8 ,16 ,1 ,0xA0000 ,0xA000 ,100 ,525 ,80 ,480 ,0 },
{ 0x013 ,M_VGA ,320 ,200 ,40 ,25 ,8 ,8 ,1 ,0xA0000 ,0x0000 ,100 ,449 ,80 ,400 ,0 },
{ 0x054 ,M_TEXT ,1056 ,688, 132,43, 8, 8, 1 ,0xB8000 ,0x4000, 192, 800, 132, 688, 0 },
{ 0x055 ,M_TEXT ,1056 ,400, 132,25, 8, 16, 1 ,0xB8000 ,0x2000, 192, 449, 132, 400, 0 },
{ 0x100 ,M_LIN8 ,640 ,400 ,80 ,25 ,8 ,16 ,1 ,0xA0000 ,0x10000,100 ,449 ,80 ,400 ,0 },
{ 0x101 ,M_LIN8 ,640 ,480 ,80 ,30 ,8 ,16 ,1 ,0xA0000 ,0x10000,100 ,525 ,80 ,480 ,0 },
{ 0x103 ,M_LIN8 ,800 ,600 ,100,37 ,8 ,16 ,1 ,0xA0000 ,0x10000,128 ,663 ,100,600 ,0 },
{ 0x150 ,M_LIN8 ,320 ,200 ,40 ,25 ,8 ,8 ,1 ,0xA0000 ,0x10000,100 ,449 ,80 ,400 , _EGA_LINE_DOUBLE },
{ 0x151 ,M_LIN8 ,320 ,240 ,40 ,30 ,8 ,8 ,1 ,0xA0000 ,0x10000,100 ,525 ,80 ,480 , _EGA_LINE_DOUBLE },
{ 0x152 ,M_LIN8 ,320 ,400 ,40 ,50 ,8 ,8 ,1 ,0xA0000 ,0x10000,100 ,449 ,80 ,400 , 0 },
{ 0x153 ,M_LIN8 ,320 ,480 ,40 ,60 ,8 ,8 ,1 ,0xA0000 ,0x10000,100 ,525 ,80 ,480 , 0 },
{0xFFFF ,M_ERROR ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0x00000 ,0x0000 ,0 ,0 ,0 ,0 ,0 },
};
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VideoModeBlock ModeList_OTHER[]={
/* mode ,type ,sw ,sh ,tw ,th ,cw,ch ,pt,pstart ,plength,htot,vtot,hde,vde ,special flags */
{ 0x000 ,M_TEXT ,320 ,400 ,40 ,25 ,8 ,8 ,8 ,0xB8000 ,0x0800 ,56 ,31 ,40 ,25 ,0 },
{ 0x001 ,M_TEXT ,320 ,400 ,40 ,25 ,8 ,8 ,8 ,0xB8000 ,0x0800 ,56 ,31 ,40 ,25 ,0 },
{ 0x002 ,M_TEXT ,640 ,400 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x1000 ,113 ,31 ,80 ,25 ,0 },
{ 0x003 ,M_TEXT ,640 ,400 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x1000 ,113 ,31 ,80 ,25 ,0 },
{ 0x004 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,56 ,127 ,40 ,100 ,0 },
{ 0x005 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,56 ,127 ,40 ,100 ,0 },
{ 0x006 ,M_CGA2 ,640 ,200 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,56 ,127 ,40 ,100 ,0 },
{ 0x008 ,M_TANDY16,160 ,200 ,20 ,25 ,8 ,8 ,8 ,0xB8000 ,0x2000 ,56 ,127 ,40 ,100 ,0 },
{ 0x009 ,M_TANDY16,320 ,200 ,40 ,25 ,8 ,8 ,8 ,0xB8000 ,0x2000 ,113 ,63 ,80 ,50 ,0 },
{ 0x00A ,M_CGA4 ,640 ,200 ,40 ,25 ,8 ,8 ,8 ,0xB8000 ,0x2000 ,113 ,63 ,80 ,50 ,0 },
{0xFFFF ,M_ERROR ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0x00000 ,0x0000 ,0 ,0 ,0 ,0 ,0 },
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};
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VideoModeBlock Hercules_Mode=
{ 0x007 ,M_TEXT ,640 ,400 ,80 ,25 ,8 ,14 ,4 ,0xB0000 ,0x1000 ,97 ,25 ,80 ,25 ,0 };
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static Bit8u text_palette[64][3]=
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{
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{0x00,0x00,0x00},{0x00,0x00,0x2a},{0x00,0x2a,0x00},{0x00,0x2a,0x2a},{0x2a,0x00,0x00},{0x2a,0x00,0x2a},{0x2a,0x2a,0x00},{0x2a,0x2a,0x2a},
{0x00,0x00,0x15},{0x00,0x00,0x3f},{0x00,0x2a,0x15},{0x00,0x2a,0x3f},{0x2a,0x00,0x15},{0x2a,0x00,0x3f},{0x2a,0x2a,0x15},{0x2a,0x2a,0x3f},
{0x00,0x15,0x00},{0x00,0x15,0x2a},{0x00,0x3f,0x00},{0x00,0x3f,0x2a},{0x2a,0x15,0x00},{0x2a,0x15,0x2a},{0x2a,0x3f,0x00},{0x2a,0x3f,0x2a},
{0x00,0x15,0x15},{0x00,0x15,0x3f},{0x00,0x3f,0x15},{0x00,0x3f,0x3f},{0x2a,0x15,0x15},{0x2a,0x15,0x3f},{0x2a,0x3f,0x15},{0x2a,0x3f,0x3f},
{0x15,0x00,0x00},{0x15,0x00,0x2a},{0x15,0x2a,0x00},{0x15,0x2a,0x2a},{0x3f,0x00,0x00},{0x3f,0x00,0x2a},{0x3f,0x2a,0x00},{0x3f,0x2a,0x2a},
{0x15,0x00,0x15},{0x15,0x00,0x3f},{0x15,0x2a,0x15},{0x15,0x2a,0x3f},{0x3f,0x00,0x15},{0x3f,0x00,0x3f},{0x3f,0x2a,0x15},{0x3f,0x2a,0x3f},
{0x15,0x15,0x00},{0x15,0x15,0x2a},{0x15,0x3f,0x00},{0x15,0x3f,0x2a},{0x3f,0x15,0x00},{0x3f,0x15,0x2a},{0x3f,0x3f,0x00},{0x3f,0x3f,0x2a},
{0x15,0x15,0x15},{0x15,0x15,0x3f},{0x15,0x3f,0x15},{0x15,0x3f,0x3f},{0x3f,0x15,0x15},{0x3f,0x15,0x3f},{0x3f,0x3f,0x15},{0x3f,0x3f,0x3f}
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};
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static Bit8u ega_palette[64][3]=
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{
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{0x00,0x00,0x00}, {0x00,0x00,0x2a}, {0x00,0x2a,0x00}, {0x00,0x2a,0x2a}, {0x2a,0x00,0x00}, {0x2a,0x00,0x2a}, {0x2a,0x15,0x00}, {0x2a,0x2a,0x2a},
{0x00,0x00,0x00}, {0x00,0x00,0x2a}, {0x00,0x2a,0x00}, {0x00,0x2a,0x2a}, {0x2a,0x00,0x00}, {0x2a,0x00,0x2a}, {0x2a,0x15,0x00}, {0x2a,0x2a,0x2a},
{0x15,0x15,0x15}, {0x15,0x15,0x3f}, {0x15,0x3f,0x15}, {0x15,0x3f,0x3f}, {0x3f,0x15,0x15}, {0x3f,0x15,0x3f}, {0x3f,0x3f,0x15}, {0x3f,0x3f,0x3f},
{0x15,0x15,0x15}, {0x15,0x15,0x3f}, {0x15,0x3f,0x15}, {0x15,0x3f,0x3f}, {0x3f,0x15,0x15}, {0x3f,0x15,0x3f}, {0x3f,0x3f,0x15}, {0x3f,0x3f,0x3f},
{0x00,0x00,0x00}, {0x00,0x00,0x2a}, {0x00,0x2a,0x00}, {0x00,0x2a,0x2a}, {0x2a,0x00,0x00}, {0x2a,0x00,0x2a}, {0x2a,0x15,0x00}, {0x2a,0x2a,0x2a},
{0x00,0x00,0x00}, {0x00,0x00,0x2a}, {0x00,0x2a,0x00}, {0x00,0x2a,0x2a}, {0x2a,0x00,0x00}, {0x2a,0x00,0x2a}, {0x2a,0x15,0x00}, {0x2a,0x2a,0x2a},
{0x15,0x15,0x15}, {0x15,0x15,0x3f}, {0x15,0x3f,0x15}, {0x15,0x3f,0x3f}, {0x3f,0x15,0x15}, {0x3f,0x15,0x3f}, {0x3f,0x3f,0x15}, {0x3f,0x3f,0x3f},
{0x15,0x15,0x15}, {0x15,0x15,0x3f}, {0x15,0x3f,0x15}, {0x15,0x3f,0x3f}, {0x3f,0x15,0x15}, {0x3f,0x15,0x3f}, {0x3f,0x3f,0x15}, {0x3f,0x3f,0x3f}
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};
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static Bit8u cga_palette[16][3]= {
{0x00,0x00,0x00}, {0x00,0x00,0x2a}, {0x00,0x2a,0x00}, {0x00,0x2a,0x2a}, {0x2a,0x00,0x00}, {0x2a,0x00,0x2a}, {0x2a,0x15,0x00}, {0x2a,0x2a,0x2a},
{0x15,0x15,0x15}, {0x15,0x15,0x3f}, {0x15,0x3f,0x15}, {0x15,0x3f,0x3f}, {0x3f,0x15,0x15}, {0x3f,0x15,0x3f}, {0x3f,0x3f,0x15}, {0x3f,0x3f,0x3f},
};
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static Bit8u vga_palette[256][3]=
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{
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{0x00,0x00,0x00},{0x00,0x00,0x2a},{0x00,0x2a,0x00},{0x00,0x2a,0x2a},{0x2a,0x00,0x00},{0x2a,0x00,0x2a},{0x2a,0x15,0x00},{0x2a,0x2a,0x2a},
{0x15,0x15,0x15},{0x15,0x15,0x3f},{0x15,0x3f,0x15},{0x15,0x3f,0x3f},{0x3f,0x15,0x15},{0x3f,0x15,0x3f},{0x3f,0x3f,0x15},{0x3f,0x3f,0x3f},
{0x00,0x00,0x00},{0x05,0x05,0x05},{0x08,0x08,0x08},{0x0b,0x0b,0x0b},{0x0e,0x0e,0x0e},{0x11,0x11,0x11},{0x14,0x14,0x14},{0x18,0x18,0x18},
{0x1c,0x1c,0x1c},{0x20,0x20,0x20},{0x24,0x24,0x24},{0x28,0x28,0x28},{0x2d,0x2d,0x2d},{0x32,0x32,0x32},{0x38,0x38,0x38},{0x3f,0x3f,0x3f},
{0x00,0x00,0x3f},{0x10,0x00,0x3f},{0x1f,0x00,0x3f},{0x2f,0x00,0x3f},{0x3f,0x00,0x3f},{0x3f,0x00,0x2f},{0x3f,0x00,0x1f},{0x3f,0x00,0x10},
{0x3f,0x00,0x00},{0x3f,0x10,0x00},{0x3f,0x1f,0x00},{0x3f,0x2f,0x00},{0x3f,0x3f,0x00},{0x2f,0x3f,0x00},{0x1f,0x3f,0x00},{0x10,0x3f,0x00},
{0x00,0x3f,0x00},{0x00,0x3f,0x10},{0x00,0x3f,0x1f},{0x00,0x3f,0x2f},{0x00,0x3f,0x3f},{0x00,0x2f,0x3f},{0x00,0x1f,0x3f},{0x00,0x10,0x3f},
{0x1f,0x1f,0x3f},{0x27,0x1f,0x3f},{0x2f,0x1f,0x3f},{0x37,0x1f,0x3f},{0x3f,0x1f,0x3f},{0x3f,0x1f,0x37},{0x3f,0x1f,0x2f},{0x3f,0x1f,0x27},
{0x3f,0x1f,0x1f},{0x3f,0x27,0x1f},{0x3f,0x2f,0x1f},{0x3f,0x37,0x1f},{0x3f,0x3f,0x1f},{0x37,0x3f,0x1f},{0x2f,0x3f,0x1f},{0x27,0x3f,0x1f},
{0x1f,0x3f,0x1f},{0x1f,0x3f,0x27},{0x1f,0x3f,0x2f},{0x1f,0x3f,0x37},{0x1f,0x3f,0x3f},{0x1f,0x37,0x3f},{0x1f,0x2f,0x3f},{0x1f,0x27,0x3f},
{0x2d,0x2d,0x3f},{0x31,0x2d,0x3f},{0x36,0x2d,0x3f},{0x3a,0x2d,0x3f},{0x3f,0x2d,0x3f},{0x3f,0x2d,0x3a},{0x3f,0x2d,0x36},{0x3f,0x2d,0x31},
{0x3f,0x2d,0x2d},{0x3f,0x31,0x2d},{0x3f,0x36,0x2d},{0x3f,0x3a,0x2d},{0x3f,0x3f,0x2d},{0x3a,0x3f,0x2d},{0x36,0x3f,0x2d},{0x31,0x3f,0x2d},
{0x2d,0x3f,0x2d},{0x2d,0x3f,0x31},{0x2d,0x3f,0x36},{0x2d,0x3f,0x3a},{0x2d,0x3f,0x3f},{0x2d,0x3a,0x3f},{0x2d,0x36,0x3f},{0x2d,0x31,0x3f},
{0x00,0x00,0x1c},{0x07,0x00,0x1c},{0x0e,0x00,0x1c},{0x15,0x00,0x1c},{0x1c,0x00,0x1c},{0x1c,0x00,0x15},{0x1c,0x00,0x0e},{0x1c,0x00,0x07},
{0x1c,0x00,0x00},{0x1c,0x07,0x00},{0x1c,0x0e,0x00},{0x1c,0x15,0x00},{0x1c,0x1c,0x00},{0x15,0x1c,0x00},{0x0e,0x1c,0x00},{0x07,0x1c,0x00},
{0x00,0x1c,0x00},{0x00,0x1c,0x07},{0x00,0x1c,0x0e},{0x00,0x1c,0x15},{0x00,0x1c,0x1c},{0x00,0x15,0x1c},{0x00,0x0e,0x1c},{0x00,0x07,0x1c},
{0x0e,0x0e,0x1c},{0x11,0x0e,0x1c},{0x15,0x0e,0x1c},{0x18,0x0e,0x1c},{0x1c,0x0e,0x1c},{0x1c,0x0e,0x18},{0x1c,0x0e,0x15},{0x1c,0x0e,0x11},
{0x1c,0x0e,0x0e},{0x1c,0x11,0x0e},{0x1c,0x15,0x0e},{0x1c,0x18,0x0e},{0x1c,0x1c,0x0e},{0x18,0x1c,0x0e},{0x15,0x1c,0x0e},{0x11,0x1c,0x0e},
{0x0e,0x1c,0x0e},{0x0e,0x1c,0x11},{0x0e,0x1c,0x15},{0x0e,0x1c,0x18},{0x0e,0x1c,0x1c},{0x0e,0x18,0x1c},{0x0e,0x15,0x1c},{0x0e,0x11,0x1c},
{0x14,0x14,0x1c},{0x16,0x14,0x1c},{0x18,0x14,0x1c},{0x1a,0x14,0x1c},{0x1c,0x14,0x1c},{0x1c,0x14,0x1a},{0x1c,0x14,0x18},{0x1c,0x14,0x16},
{0x1c,0x14,0x14},{0x1c,0x16,0x14},{0x1c,0x18,0x14},{0x1c,0x1a,0x14},{0x1c,0x1c,0x14},{0x1a,0x1c,0x14},{0x18,0x1c,0x14},{0x16,0x1c,0x14},
{0x14,0x1c,0x14},{0x14,0x1c,0x16},{0x14,0x1c,0x18},{0x14,0x1c,0x1a},{0x14,0x1c,0x1c},{0x14,0x1a,0x1c},{0x14,0x18,0x1c},{0x14,0x16,0x1c},
{0x00,0x00,0x10},{0x04,0x00,0x10},{0x08,0x00,0x10},{0x0c,0x00,0x10},{0x10,0x00,0x10},{0x10,0x00,0x0c},{0x10,0x00,0x08},{0x10,0x00,0x04},
{0x10,0x00,0x00},{0x10,0x04,0x00},{0x10,0x08,0x00},{0x10,0x0c,0x00},{0x10,0x10,0x00},{0x0c,0x10,0x00},{0x08,0x10,0x00},{0x04,0x10,0x00},
{0x00,0x10,0x00},{0x00,0x10,0x04},{0x00,0x10,0x08},{0x00,0x10,0x0c},{0x00,0x10,0x10},{0x00,0x0c,0x10},{0x00,0x08,0x10},{0x00,0x04,0x10},
{0x08,0x08,0x10},{0x0a,0x08,0x10},{0x0c,0x08,0x10},{0x0e,0x08,0x10},{0x10,0x08,0x10},{0x10,0x08,0x0e},{0x10,0x08,0x0c},{0x10,0x08,0x0a},
{0x10,0x08,0x08},{0x10,0x0a,0x08},{0x10,0x0c,0x08},{0x10,0x0e,0x08},{0x10,0x10,0x08},{0x0e,0x10,0x08},{0x0c,0x10,0x08},{0x0a,0x10,0x08},
{0x08,0x10,0x08},{0x08,0x10,0x0a},{0x08,0x10,0x0c},{0x08,0x10,0x0e},{0x08,0x10,0x10},{0x08,0x0e,0x10},{0x08,0x0c,0x10},{0x08,0x0a,0x10},
{0x0b,0x0b,0x10},{0x0c,0x0b,0x10},{0x0d,0x0b,0x10},{0x0f,0x0b,0x10},{0x10,0x0b,0x10},{0x10,0x0b,0x0f},{0x10,0x0b,0x0d},{0x10,0x0b,0x0c},
{0x10,0x0b,0x0b},{0x10,0x0c,0x0b},{0x10,0x0d,0x0b},{0x10,0x0f,0x0b},{0x10,0x10,0x0b},{0x0f,0x10,0x0b},{0x0d,0x10,0x0b},{0x0c,0x10,0x0b},
{0x0b,0x10,0x0b},{0x0b,0x10,0x0c},{0x0b,0x10,0x0d},{0x0b,0x10,0x0f},{0x0b,0x10,0x10},{0x0b,0x0f,0x10},{0x0b,0x0d,0x10},{0x0b,0x0c,0x10},
{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00},{0x00,0x00,0x00}
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};
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VideoModeBlock * CurMode;
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static bool SetCurMode(VideoModeBlock modeblock[],Bitu mode) {
Bitu i=0;
while ( modeblock[i].mode!=0xffff) {
if ( modeblock[i].mode==mode) goto foundmode;
i++;
}
return false;
foundmode:
CurMode=&modeblock[i];
return true;
}
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static void FinishSetMode(bool clearmem) {
Bitu i;
/* Clear video memory if needs be */
if (clearmem) {
switch (CurMode->type) {
case M_CGA4:
case M_CGA2:
for (i=0;i<16*1024;i++) {
real_writew(0xb800,i*2,0x0000);
}
break;
case M_TEXT:
if (CurMode->mode==7) for (i=0;i<16*1024;i++) {
real_writew(0xb000,i*2,0x0120);
} else for (i=0;i<16*1024;i++) {
real_writew(0xb800,i*2,0x0720);
}
break;
case M_EGA16:
case M_VGA:
case M_LIN8:
/* Hack we just acess the memory directly */
memset(&vga.mem,0,sizeof(vga.mem));
}
}
/* Setup the BIOS */
if (CurMode->mode<128) real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE,CurMode->mode);
else real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE,CurMode->mode-0x98); //Looks like the s3 bios
real_writew(BIOSMEM_SEG,BIOSMEM_NB_COLS,CurMode->twidth);
real_writew(BIOSMEM_SEG,BIOSMEM_PAGE_SIZE,CurMode->plength);
real_writew(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS,CurMode->mode==7 ? 0x3b4 : 0x3d4);
real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,CurMode->theight-1);
real_writew(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,CurMode->cheight);
real_writeb(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,(0x60|(clearmem << 7)));
real_writeb(BIOSMEM_SEG,BIOSMEM_SWITCHES,0x09);
real_writeb(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,real_readb(BIOSMEM_SEG,BIOSMEM_MODESET_CTL)&0x7f);
// FIXME We nearly have the good tables. to be reworked
if (machine==MCH_VGA) real_writeb(BIOSMEM_SEG,BIOSMEM_DCC_INDEX,0x08); // 8 is VGA should be ok for now
real_writew(BIOSMEM_SEG,BIOSMEM_VS_POINTER,0x00);
real_writew(BIOSMEM_SEG,BIOSMEM_VS_POINTER+2,0x00);
// Set cursor shape
if(CurMode->type==M_TEXT) {
INT10_SetCursorShape(0x06,07);
}
// Set cursor pos for page 0..7
for(i=0;i<8;i++) INT10_SetCursorPos(0,0,(Bit8u)i);
// Set active page 0
INT10_SetActivePage(0);
/* Set some interrupt vectors */
switch (CurMode->cheight) {
case 8:RealSetVec(0x43,int10.rom.font_8_first);break;
case 14:RealSetVec(0x43,int10.rom.font_14);break;
case 16:RealSetVec(0x43,int10.rom.font_16);break;
}
/* Tell mouse resolution change */
Mouse_NewVideoMode();
}
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bool INT10_SetVideoMode_OTHER(Bitu mode,bool clearmem) {
Bitu i;
switch (machine) {
case MCH_CGA:
if (mode>6) return false;
case MCH_TANDY:
if (mode>0xa) return false;
if (!SetCurMode(ModeList_OTHER,mode)) {
LOG(LOG_INT10,LOG_ERROR)("Trying to set illegal mode %X",mode);
return false;
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}
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break;
case MCH_HERC:
if (mode!=7) return false;
CurMode=&Hercules_Mode;
break;
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}
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LOG(LOG_INT10,LOG_NORMAL)("Set Video Mode %X",mode);
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/* Setup the VGA to the correct mode */
// VGA_SetMode(CurMode->type);
/* Setup the CRTC */
Bitu crtc_base=machine==MCH_HERC ? 0x3b4 : 0x3d4;
//Horizontal total
IO_WriteW(crtc_base,0x00 | (CurMode->htotal) << 8);
//Horizontal displayed
IO_WriteW(crtc_base,0x01 | (CurMode->hdispend) << 8);
//Horizontal sync position
IO_WriteW(crtc_base,0x02 | (CurMode->hdispend+1) << 8);
//Horizontal sync width, seems to be fixed to 0xa, for cga at least, hercules has 0xf
IO_WriteW(crtc_base,0x03 | (0xa) << 8);
////Vertical total
IO_WriteW(crtc_base,0x04 | (CurMode->vtotal) << 8);
//Vertical total adjust, 6 for cga,hercules,tandy
IO_WriteW(crtc_base,0x05 | (6) << 8);
//Vertical displayed
IO_WriteW(crtc_base,0x06 | (CurMode->vdispend) << 8);
//Vertical sync position
IO_WriteW(crtc_base,0x07 | (CurMode->vdispend+1) << 8);
//Maximum scanline
Bit8u scanline,crtpage;
switch(CurMode->type) {
case M_TEXT:
if (machine==MCH_HERC) scanline=14;
else scanline=8;
break;
case M_CGA2:
scanline=2;
case M_CGA4:
if (CurMode->mode!=0xa) scanline=2;
else scanline=4;
case M_TANDY16:
if (CurMode->mode!=0x9) scanline=2;
else scanline=4;
break;
}
IO_WriteW(crtc_base,0x09 | (scanline-1) << 8);
//Setup the CGA palette using VGA DAC palette
for (i=0;i<16;i++) VGA_DAC_SetEntry(i,cga_palette[i][0],cga_palette[i][1],cga_palette[i][2]);
//Setup the tandy palette
for (i=0;i<16;i++) VGA_DAC_CombineColor(i,i);
//Setup the special registers for each machine type
Bit8u mode_control_list[0xa+1]={
0x2c,0x28,0x2d,0x29, //0-3
0x2a,0x2e,0x1e,0x29, //4-7
0x2a,0x2b,0x3b //8-a
};
Bit8u mode_control,color_select;
switch (machine) {
case MCH_HERC:
IO_WriteB(0x3bf,0x3); //Enable changing all bits
IO_WriteB(0x3b8,0x8); //TEXT mode and non-blinking characters
IO_WriteB(0x3bf,0x0); //Disable changing all bits
VGA_DAC_CombineColor(1,0xf);
break;
case MCH_CGA:
mode_control=mode_control_list[CurMode->mode];
if (CurMode->mode == 0x6) color_select=0x3f;
else color_select=0x30;
IO_WriteB(0x3d8,mode_control);
IO_WriteB(0x3d9,color_select);
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,mode_control);
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAL,color_select);
break;
case MCH_TANDY:
/* Init some registers */
IO_WriteB(0x3da,0x1);IO_WriteB(0x3de,0xf); //Palette mask always 0xf
IO_WriteB(0x3da,0x2);IO_WriteB(0x3de,0x0); //block border
IO_WriteB(0x3da,0x3); //Tandy color overrides?
switch (CurMode->mode) {
case 0x8:
IO_WriteB(0x3de,0x14);break;
case 0x9:
IO_WriteB(0x3de,0x14);break;
case 0xa:
IO_WriteB(0x3de,0x0c);break;
default:
IO_WriteB(0x3de,0x0);break;
}
crtpage=(CurMode->mode>=0x9) ? 0xf6 : 0x3f;
IO_WriteB(0x3df,crtpage);
real_writeb(BIOSMEM_SEG,BIOSMEM_CRTCPU_PAGE,crtpage);
mode_control=mode_control_list[CurMode->mode];
if (CurMode->mode == 0x6 || CurMode->mode==0xa) color_select=0x3f;
else color_select=0x30;
IO_WriteB(0x3d8,mode_control);
IO_WriteB(0x3d9,color_select);
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,mode_control);
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAL,color_select);
break;
}
FinishSetMode(clearmem);
return true;
}
bool INT10_SetVideoMode(Bitu mode) {
bool clearmem=true;Bitu i;
if ((mode<256) && (mode & 128)) {
clearmem=false;
mode-=128;
}
LOG(LOG_INT10,LOG_NORMAL)("Set Video Mode %X",mode);
if (machine!=MCH_VGA) return INT10_SetVideoMode_OTHER(mode,clearmem);
Bit8u modeset_ctl,video_ctl,vga_switches;
if (!SetCurMode(ModeList_VGA,mode)){
LOG(LOG_INT10,LOG_ERROR)("Trying to set illegal mode %X",mode);
return false;
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}
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/* First read mode setup settings from bios area */
video_ctl=real_readb(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL);
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vga_switches=real_readb(BIOSMEM_SEG,BIOSMEM_SWITCHES);
modeset_ctl=real_readb(BIOSMEM_SEG,BIOSMEM_MODESET_CTL);
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/* Setup the VGA to the correct mode */
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Bit16u crtc_base;
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bool mono_mode=(mode == 7);
if (mono_mode) crtc_base=0x3b4;
else crtc_base=0x3d4;
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/* Setup MISC Output Register */
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Bit8u misc_output=0x2 | (mono_mode ? 0x0 : 0x1);
IO_Write(0x3c2,misc_output); //Setup for 3b4 or 3d4
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/* Program Sequencer */
Bit8u seq_data[SEQ_REGS];
memset(seq_data,0,SEQ_REGS);
seq_data[1]|=1; //8 dot fonts by default
seq_data[1]|= //Check for half clock
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(CurMode->special & _EGA_HALF_CLOCK) ? 0x08 : 0x00;
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seq_data[4]|=0x02; //More than 64kb
switch (CurMode->type) {
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case M_TEXT:
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seq_data[2]|=0x3; //Enable plane 0 and 1
seq_data[4]|=0x05; //Alpanumeric and odd/even enabled
break;
case M_EGA16:
seq_data[2]|=0xf; //Enable all planes for writing
break;
case M_LIN8: //Seems to have the same reg layout from testing
case M_VGA:
seq_data[2]|=0xf; //Enable all planes for writing
seq_data[4]|=0xc; //Graphics - odd/even - Chained
break;
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}
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for (i=0;i<SEQ_REGS;i++) {
IO_Write(0x3c4,i);
IO_Write(0x3c5,seq_data[i]);
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}
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/* Program CRTC */
/* First disable write protection */
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IO_Write(crtc_base,0x11);
IO_Write(crtc_base+1,IO_Read(crtc_base+1)&0x7f);
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/* Clear all the regs */
for (i=0x0;i<=0x18;i++) {
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IO_Write(crtc_base,i);IO_Write(crtc_base+1,0);
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}
Bit8u overflow=0;Bit8u max_scanline=0;
Bit8u ver_overflow=0;Bit8u hor_overflow=0;
/* Horizontal Total */
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IO_Write(crtc_base,0x00);IO_Write(crtc_base+1,CurMode->htotal-5);
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hor_overflow|=((CurMode->htotal-5) & 0x100) >> 8;
/* Horizontal Display End */
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IO_Write(crtc_base,0x01);IO_Write(crtc_base+1,CurMode->hdispend-1);
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hor_overflow|=((CurMode->hdispend-1) & 0x100) >> 7;
/* Start horizontal Blanking */
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IO_Write(crtc_base,0x02);IO_Write(crtc_base+1,CurMode->hdispend);
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hor_overflow|=((CurMode->hdispend) & 0x100) >> 6;
/* End horizontal Blanking */
Bitu blank_end;
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if (CurMode->special & _EGA_HALF_CLOCK) {
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blank_end = (CurMode->htotal-1) & 0x7f;
} else {
blank_end = (CurMode->htotal-2) & 0x7f;
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}
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IO_Write(crtc_base,0x03);IO_Write(crtc_base+1,0x80|(blank_end & 0x1f));
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/* Start Horizontal Retrace */
Bitu ret_start;
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if (CurMode->special & _EGA_HALF_CLOCK) ret_start = (CurMode->hdispend+2);
else ret_start = (CurMode->hdispend+4);
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IO_Write(crtc_base,0x04);IO_Write(crtc_base+1,ret_start);
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hor_overflow|=(ret_start & 0x100) >> 4;
/* End Horizontal Retrace */
Bitu ret_end;
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if (CurMode->special & _EGA_HALF_CLOCK) ret_end = (CurMode->htotal-2) & 0x3f;
else ret_end = (CurMode->htotal-4) & 0x3f;
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IO_Write(crtc_base,0x05);IO_Write(crtc_base+1,(ret_end & 0x1f) | (blank_end & 0x20) << 2);
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/* Vertical Total */
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IO_Write(crtc_base,0x06);IO_Write(crtc_base+1,(CurMode->vtotal-2));
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overflow|=((CurMode->vtotal-2) & 0x100) >> 8;
overflow|=((CurMode->vtotal-2) & 0x200) >> 4;
ver_overflow|=((CurMode->vtotal-2) & 0x400) >> 10;
/*
These aren't exactly accurate i think,
Should be more like a certain percentage based on vertical total
So you get same sized borders, but okay :)
*/
/* Vertical Retrace Start */
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IO_Write(crtc_base,0x10);IO_Write(crtc_base+1,(CurMode->vdispend+12));
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overflow|=((CurMode->vdispend+12) & 0x100) >> 6;
overflow|=((CurMode->vdispend+12) & 0x200) >> 2;
ver_overflow|=((CurMode->vdispend+12) & 0x400) >> 6;
/* Vertical Retrace End */
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IO_Write(crtc_base,0x11);IO_Write(crtc_base+1,(CurMode->vdispend+14) & 0xF);
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/* Vertical Display End */
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IO_Write(crtc_base,0x12);IO_Write(crtc_base+1,(CurMode->vdispend-1));
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overflow|=((CurMode->vdispend-1) & 0x100) >> 7;
overflow|=((CurMode->vdispend-1) & 0x200) >> 3;
ver_overflow|=((CurMode->vdispend-1) & 0x400) >> 9;
/* Vertical Blank Start */
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IO_Write(crtc_base,0x15);IO_Write(crtc_base+1,(CurMode->vdispend+8));
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overflow|=((CurMode->vdispend+8) & 0x100) >> 5;
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max_scanline|=((CurMode->vdispend+8) & 0x200) >> 4;
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ver_overflow|=((CurMode->vdispend+8) & 0x400) >> 8;
/* Vertical Retrace End */
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IO_Write(crtc_base,0x16);IO_Write(crtc_base+1,(CurMode->vtotal-8));
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/* Line Compare */
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Bitu line_compare=(CurMode->vtotal < 1024) ? 1023 : 2047;
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IO_Write(crtc_base,0x18);IO_Write(crtc_base+1,line_compare&0xff);
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overflow|=(line_compare & 0x100) >> 4;
max_scanline|=(line_compare & 0x200) >> 3;
ver_overflow|=(line_compare & 0x400) >> 4;
Bit8u underline=0;
/* Maximum scanline / Underline Location */
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if (CurMode->special & _EGA_LINE_DOUBLE) max_scanline|=0x80;
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switch (CurMode->type) {
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case M_TEXT:
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max_scanline|=CurMode->cheight-1;
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underline=0x1f;
break;
case M_VGA:
underline=0x40;
max_scanline|=1; //Vga doesn't use double line but this
break;
case M_LIN8:
underline=0x60; //Seems to enable the every 4th clock on my s3
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break;
case M_CGA4:
max_scanline|=1;
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break;
}
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IO_Write(crtc_base,0x09);IO_Write(crtc_base+1,max_scanline);
IO_Write(crtc_base,0x14);IO_Write(crtc_base+1,underline);
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/* OverFlow */
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IO_Write(crtc_base,0x07);IO_Write(crtc_base+1,overflow);
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/* Extended Horizontal Overflow */
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IO_Write(crtc_base,0x5d);IO_Write(crtc_base+1,hor_overflow);
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/* Extended Vertical Overflow */
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IO_Write(crtc_base,0x5e);IO_Write(crtc_base+1,ver_overflow);
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/* Offset Register */
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IO_Write(crtc_base,0x13);
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switch (CurMode->type) {
case M_LIN8:
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IO_Write(crtc_base+1,CurMode->swidth/8);
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break;
default:
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IO_Write(crtc_base+1,CurMode->hdispend/2);
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}
/* Mode Control */
Bit8u mode_control=0;
switch (CurMode->type) {
case M_CGA4:
case M_CGA2:
mode_control=0xa2;
break;
case M_EGA16:
mode_control=0xe3;
break;
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case M_TEXT:
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case M_VGA:
mode_control=0xa3;
break;
case M_LIN8:
mode_control=0xab;
break;
}
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IO_Write(crtc_base,0x17);IO_Write(crtc_base+1,mode_control);
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/* Renable write protection */
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IO_Write(crtc_base,0x11);
IO_Write(crtc_base+1,IO_Read(crtc_base+1)|0x80);
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/* Setup the correct clock */
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if (CurMode->mode>=0x100) {
misc_output|=0xef; //Select clock 3
Bitu clock=CurMode->vtotal*8*CurMode->htotal*70;
VGA_SetClock(3,clock/1000);
}
Bit8u misc_control_2;
/* Setup Pixel format */
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switch (CurMode->type) {
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case M_LIN8:
if (CurMode->swidth < 640) misc_control_2=0x0; //Use single pixel mode,M_VGA then
else misc_control_2=0x10;
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break;
default:
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misc_control_2=0x0;
break;
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}
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IO_WriteB(0x3d4,0x67);IO_WriteB(0x3d5,misc_control_2);
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/* Write Misc Output */
IO_Write(0x3c2,misc_output);
/* Program Graphics controller */
Bit8u gfx_data[GFX_REGS];
memset(gfx_data,0,GFX_REGS);
gfx_data[0x7]=0xf; /* Color don't care */
gfx_data[0x8]=0xff; /* BitMask */
switch (CurMode->type) {
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case M_TEXT:
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gfx_data[0x5]|=0x10; //Odd-Even Mode
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gfx_data[0x6]|=mono_mode ? 0x0a : 0x0e; //Either b800 or b000
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break;
case M_LIN8:
case M_VGA:
gfx_data[0x5]|=0x40; //256 color mode
gfx_data[0x6]|=0x05; //graphics mode at 0xa000-affff
break;
case M_EGA16:
gfx_data[0x6]|=0x05; //graphics mode at 0xa000-affff
break;
case M_CGA2:
case M_CGA4:
case M_TANDY16:
gfx_data[0x5]|=0x20; //CGA mode
gfx_data[0x6]|=0x0f; //graphics mode at at 0xb800=0xbfff
break;
}
for (i=0;i<GFX_REGS;i++) {
IO_Write(0x3ce,i);
IO_Write(0x3cf,gfx_data[i]);
}
Bit8u att_data[ATT_REGS];
memset(att_data,0,ATT_REGS);
att_data[0x12]=0xf; //Always have all color planes enabled
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/* Program Attribute Controller */
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switch (CurMode->type) {
case M_EGA16:
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att_data[0x10]=0x01; //Color Graphics
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if (CurMode->mode>0xe) goto att_text16;
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for (i=0;i<8;i++) {
att_data[i]=i;
att_data[i+8]=i+0x10;
}
break;
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case M_TANDY16:
att_data[0x10]=0x01; //Color Graphics
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for (i=0;i<16;i++) att_data[i]=i;
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break;
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case M_TEXT:
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att_data[0x13]=0x08; //Pel panning on 8, although we don't have 9 dot text mode
att_data[0x10]=0x0C; //Color Text with blinking
att_text16:
for (i=0;i<8;i++) {
att_data[i]=i;
att_data[i+8]=i+0x38;
}
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att_data[0x06]=0x14; //Odd Color 6 yellow/brown.
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break;
case M_CGA2:
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att_data[0x10]=0x01; //Color Graphics
att_data[0]=0x0;
att_data[1]=0xf;
att_data[0x12]=0x1; //Only enable 1 plane
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAL,0x3f);
break;
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case M_CGA4:
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att_data[0x10]=0x01; //Color Graphics
att_data[0]=0x0;
att_data[1]=0x3;
att_data[2]=0x5;
att_data[3]=0x7;
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real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAL,0x30);
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break;
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case M_VGA:
case M_LIN8:
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for (i=0;i<16;i++) att_data[i]=i;
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att_data[0x10]=0x41; //Color Graphics 8-bit
break;
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}
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IO_Read(mono_mode ? 0x3ba : 0x3da);
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for (i=0;i<ATT_REGS;i++) {
IO_Write(0x3c0,i);
IO_Write(0x3c0,att_data[i]);
}
/* Setup the DAC */
IO_Write(0x3c8,0);
switch (CurMode->type) {
case M_EGA16:
if (CurMode->mode>0xe) goto dac_text16;
for (i=0;i<64;i++) {
IO_Write(0x3c9,ega_palette[i][0]);
IO_Write(0x3c9,ega_palette[i][1]);
IO_Write(0x3c9,ega_palette[i][2]);
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}
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break;
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case M_CGA2:
case M_CGA4:
case M_TANDY16:
for (i=0;i<16;i++) {
IO_Write(0x3c9,cga_palette[i][0]);
IO_Write(0x3c9,cga_palette[i][1]);
IO_Write(0x3c9,cga_palette[i][2]);
}
break;
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case M_TEXT:
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dac_text16:
for (i=0;i<64;i++) {
IO_Write(0x3c9,text_palette[i][0]);
IO_Write(0x3c9,text_palette[i][1]);
IO_Write(0x3c9,text_palette[i][2]);
}
break;
case M_VGA:
case M_LIN8:
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for (i=0;i<256;i++) {
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IO_Write(0x3c9,vga_palette[i][0]);
IO_Write(0x3c9,vga_palette[i][1]);
IO_Write(0x3c9,vga_palette[i][2]);
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}
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break;
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}
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/* Setup some special stuff for different modes */
Bit8u feature=real_readb(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE);
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switch (CurMode->type) {
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case M_CGA2:
feature=(feature&~0x30)|0x20;
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,0x12);
break;
case M_CGA4:
feature=(feature&~0x30)|0x20;
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,0x2);
break;
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case M_TANDY16:
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feature=(feature&~0x30)|0x20;
break;
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case M_TEXT:
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feature=(feature&~0x30)|0x20;
break;
case M_EGA16:
case M_VGA:
feature=(feature&~0x30);
break;
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}
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real_writeb(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE,feature);
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/* Setup the CPU Window */
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IO_Write(crtc_base,0x6a);
IO_Write(crtc_base+1,0);
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/* Setup the linear frame buffer */
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IO_Write(crtc_base,0x59);
IO_Write(crtc_base+1,(Bit8u)(S3_LFB_BASE >> 24));
IO_Write(crtc_base,0x5a);
IO_Write(crtc_base+1,(Bit8u)(S3_LFB_BASE >> 16));
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/* Setup some remaining S3 registers */
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IO_Write(crtc_base,0x31);IO_Write(crtc_base+1,0x9); //Enable banked memory and 256k+ access
IO_Write(crtc_base,0x58);IO_Write(crtc_base+1,0x3); //Enable 8 mb of linear addressing
IO_Write(crtc_base,0x38);IO_Write(crtc_base+1,0x48); //Register lock 1
IO_Write(crtc_base,0x39);IO_Write(crtc_base+1,0xa5); //Register lock 2
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FinishSetMode(clearmem);
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/* Load text mode font */
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if (CurMode->type==M_TEXT) {
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INT10_LoadFont(Real2Phys(int10.rom.font_16),true,256,0,0,16);
}
return true;
}
DOSBox 0.57
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Reference in New Issue Copy Permalink