#include "types.h"

//Bios Startup Data
struct BiosData{
	//Start from 0x400
	u16	com1,com2,com3,com4;
	u16	lpt1,lpt2,lpt3;
	u8	ebda_lo;
	u8	ebda_hi;
	//0x410
	u16	equipf;
	u8	kbd_link_err_cnt;
	u16 memsize;	//KB
	u8	resv_1;
	u8	ps2_bios_ctrlf;
	u8	kbdflg;
	u8	kbdflg1;
	u8	keypad_entry;
	u16	kbdbuf_head;	//offset from 0x400
	u16	kbdbuf_tail;
	u8	kbdbuf[32];
	u8	frive_recalib_stat;
	u8	diskette_motor_stat;
	//0x440
	u8	motor_shutoff_cnt;	//decremented by INT8
	u8	last_diskette_opr_stat;
	u8	nec_diskette_ctrl_stat[7];
	u8	cur_video_mode;
	u16	scr_cols;
	u16	video_buf_sz;	//Bytes
	u16	cur_video_page_ofst;
	//0x450
	u16	cursposes[8];	//reflect disimmediately
	//0x460
	u8	curs_end_line;		//D n t m d f !
	u8	curs_start_line;	// o '   o i y
	u8	act_disp_page_num;
	u16	crt6845_baseport_adr;
	//3b4=mono,3d4=color
	u8	crt6845_mode_ctrl_reg_val;	//port 0x3X8
	u8	cga_cur_palatte;	//port 0x3D9
	//0x467
	u8	multiple_uses_field[5];
	//dword    cs:ip for 286 return from protect mode
	//dword    temp storage for ss:sp during shutdown
	//dword    day counter on all products after AT
	//dword    ps/2 ptr -> reset code with mem preserved
	//5 bytes  cassette tape control before AT
	u32	daily_timer;
	//incremented by INT8; read/set by INT1A
	//0x470
	u8	clock_rollover_flg;
	u8	bios_brk_flg;
	u16	spft_reset_flg;	//via ctrl-alt-del or jmp ffff:0
	u8	stat_hdisk_opr;
	u8	attach_hdisk_cnt;
	u8	xt_fixed_disk_drive_ctrl;
	u8	port_ofst_cur_fixed_disk_adapt;
	u8	timeout_lpt[4];
	u8	timeout_com[4];
	//0x480
	u16	kbdbuf_start;
	u16	kbdbuf_end;
	u8	scr_rows;
	union{
		u16	char_height;
		struct{
			u8	char_rep;
			u8	key_rep_delay;	//initial
		};
	};
	u8	cur_fn_key_num;
	u8	kbd_stat_3;
	u8	video_data;//mcga and vga
	u8	dcc_tab_idx;
	//display combination code table index (ega)
	u8	diskette_data_rate_selected;
	u8	hdisk_stat;	//ret by ctrlr
	u8	hdisk_err;	//|^|
	u8	hdisk_int_ctrl;
	u8	comb_disk_card;
	//0x490
	u8	drive_media_stat[4];
	u8	track_seek_drv0;
	u8	track_seek_drv1;
	u8	kbd_type;
	u8	kbd_led;
	u32	ptr_usr_wait_complete_flg;
	u32	user_wait_timeout;	//ms
	//0x4a0
	u8	rtc_wait_func;
	u8	lana_dma_channel;
	u8	lana_stat[2];
	u32	hdisk_intvec;
	u32	bios_video_tab_ptr;
	u8	resv_2[8];
	//below: convertible
	u8	kdb_nmi_ctrl_flg;
	u32	kdb_brk_pend;
	u8	port60_queue;
	u8	scan_code_key;
	u8	nmibuf_head;
	u8	nmibuf_tail;
	u8	nmibuf[16];
	u16	day_cnt;
	//0x4f0
	u8	intra_app_share_area[16]; 
};
#define bda ((struct BiosData*)0x400)

//Booting Config
struct BootConf{
	u8			:1;
	u8 apic		:1;
	u8 dump		:1;
	u8			:5;
};
#define bootconf ((struct BootConf*)0x7dc0)