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#ifndef _DOS_H_

#define _DOS_H_

#include "pc.h"

union REGS {

  struct {

    unsigned long ax;

    unsigned long bx;

    unsigned long cx;

    unsigned long dx;

    unsigned long si;

    unsigned long di;

    unsigned long cflag;

    unsigned long flags;

  } x;

  struct {

    unsigned char al;

    unsigned char ah;

    unsigned short upper_ax;

    unsigned char bl;

    unsigned char bh;

    unsigned short upper_bx;

    unsigned char cl;

    unsigned char ch;

    unsigned short upper_cx;

    unsigned char dl;

    unsigned char dh;

    unsigned short upper_dx;

  } h;

};

struct SREGS {

  unsigned short cs;

  unsigned short ds;

  unsigned short es;

  unsigned short fs;

  unsigned short gs;

  unsigned short ss;

};

struct ftime {

  unsigned ft_tsec:5;   /* 0-29, double to get real seconds */

  unsigned ft_min:6;    /* 0-59 */

  unsigned ft_hour:5;   /* 0-23 */

  unsigned ft_day:5;    /* 1-31 */

  unsigned ft_month:4;  /* 1-12 */

  unsigned ft_year:7;   /* since 1980 */

};

struct date {

  short da_year;

  char  da_day;

  char  da_mon;

};

struct time {

  unsigned char ti_min;

  unsigned char ti_hour;

  unsigned char ti_hund;

  unsigned char ti_sec;

};

struct dfree {

  unsigned df_avail;

  unsigned df_total;

  unsigned df_bsec;

  unsigned df_sclus;

};

#ifdef __cplusplus

extern "C" {

#endif

int bdos(int func, unsigned dx, unsigned al);

int bdosptr(int func, void *dx, unsigned al);

int int86(int ivec, union REGS *in, union REGS *out);

int int86x(int ivec, union REGS *in, union REGS *out, struct SREGS *seg);

int intdos(union REGS *in, union REGS *out);

int intdosx(union REGS *in, union REGS *out, struct SREGS *seg);

int enable(void);

int disable(void);

int getftime(int handle, struct ftime *ftimep);

int setftime(int handle, struct ftime *ftimep);

int getcbrk(void);

int setcbrk(int new_value);

void getdate(struct date *);

void gettime(struct time *);

void setdate(struct date *);

void settime(struct time *);

void getdfree(unsigned char drive, struct dfree *ptr);

void delay(unsigned msec);

int _get_default_drive(void);

void _fixpath(const char *, char *);

#ifdef __cplusplus

}

#endif

#endif