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#define NULL 0
//typedef unsigned int size_t;
struct screen_info {
unsigned char orig_x; /* 0x00 */
unsigned char orig_y; /* 0x01 */
unsigned short dontuse1; /* 0x02 -- EXT_MEM_K sits here */
unsigned short orig_video_page; /* 0x04 */
unsigned char orig_video_mode; /* 0x06 */
unsigned char orig_video_cols; /* 0x07 */
unsigned short unused2; /* 0x08 */
unsigned short orig_video_ega_bx; /* 0x0a */
unsigned short unused3; /* 0x0c */
unsigned char orig_video_lines; /* 0x0e */
unsigned char orig_video_isVGA; /* 0x0f */
unsigned short orig_video_points; /* 0x10 */
/* VESA graphic mode -- linear frame buffer */
unsigned short lfb_width; /* 0x12 */
unsigned short lfb_height; /* 0x14 */
unsigned short lfb_depth; /* 0x16 */
unsigned long lfb_base; /* 0x18 */
unsigned long lfb_size; /* 0x1c */
unsigned short dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */
unsigned short lfb_linelength; /* 0x24 */
unsigned char red_size; /* 0x26 */
unsigned char red_pos; /* 0x27 */
unsigned char green_size; /* 0x28 */
unsigned char green_pos; /* 0x29 */
unsigned char blue_size; /* 0x2a */
unsigned char blue_pos; /* 0x2b */
unsigned char rsvd_size; /* 0x2c */
unsigned char rsvd_pos; /* 0x2d */
unsigned short vesapm_seg; /* 0x2e */
unsigned short vesapm_off; /* 0x30 */
unsigned short pages; /* 0x32 */
/* 0x34 -- 0x3f reserved for future expansion */
};
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