vga_modes.h

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#ifndef _VGA_MODES_H_
#define _VGA_MODES_H_

#include <vga_types.h>

struct mode {
        int width; 
        int height; 
        int bpp; 
        bool graphic; 
        unsigned char *reg_values; 
};

static unsigned char mode_320x200x256[] = {
        /* GC */
        0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
        0xFF,
        /* SEQ */
        0x03, 0x01, 0x0F, 0x00, 0x0E,
        /* AC */
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
        0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
        0x41, 0x00, 0x0F, 0x00, 0x00,
        /* CRTC */
        0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F,
        0x00, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x9C, 0x0E, 0x8F, 0x28, 0x40, 0x96, 0xB9, 0xA3,
        0xFF,
        /* MISC */
        0x63,
};

static unsigned char mode_320x200x256_modex[] = {
        /* GC */
        0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
        0xFF,
        /* SEQ */
        0x03, 0x01, 0x0F, 0x00, 0x06,
        /* AC */
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
        0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
        0x41, 0x00, 0x0F, 0x00, 0x00,
        /* CRTC */
        0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F,
        0x00, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x9C, 0x0E, 0x8F, 0x28, 0x00, 0x96, 0xB9, 0xE3,
        0xFF,
        /* MISC */
        0x63,
};

static unsigned char mode_80x25_text[] = {
        /* GC */
        0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x00,
        0xFF,
        /* SEQ */
        0x03, 0x00, 0x03, 0x00, 0x02,
        /* AC */
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07,
        0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
        0x0C, 0x00, 0x0F, 0x08, 0x00,
        /* CRTC */
        0x5F, 0x4F, 0x50, 0x82, 0x55, 0x81, 0xBF, 0x1F,
        0x00, 0x4F, 0x0D, 0x0E, 0x00, 0x00, 0x00, 0x50,
        0x9C, 0x0E, 0x8F, 0x28, 0x1F, 0x96, 0xB9, 0xA3,
        0xFF,
        /* MISC */
        0x67,
};

// See enum VGA_mode in include/vga_types.h
static struct mode vga_modes[] = {
        // Text: 80x25
        { 80, 25, 1, 0, mode_80x25_text },
        // Graphic: 320x200x256 colors
        { 320, 200, 1, 1, mode_320x200x256 },
        // Graphic: 320x200x256 colors, mode X
        { 320, 200, 1, 1, mode_320x200x256_modex },
};

#endif