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- /* bios.h
-
- Access to bios services.
-
- Copyright (c) 1987, 1991 by Borland International
- All Rights Reserved.
- */
-
- #if !defined(__BIOS_H)
- #define __BIOS_H
-
- #if !defined(__DEFS_H)
- #include <_defs.h>
- #endif
-
- /* diskinfo_t structure for _bios_disk() */
-
- struct diskinfo_t {
- unsigned drive, head, track, sector, nsectors;
- void far *buffer;
- };
-
- /* cmd values for _bios_disk() */
-
- #define _DISK_RESET 0 /* controller hard reset */
- #define _DISK_STATUS 1 /* status of last operation */
- #define _DISK_READ 2 /* read sectors */
- #define _DISK_WRITE 3 /* write sectors */
- #define _DISK_VERIFY 4 /* verify sectors */
- #define _DISK_FORMAT 5 /* format track */
-
- /* cmd values for _bios_keybrd() */
-
- #define _KEYBRD_READ 0 /* read key */
- #define _NKEYBRD_READ 0x10 /* read key - enhanced */
- #define _KEYBRD_READY 1 /* check key ready */
- #define _NKEYBRD_READY 0x11 /* check key ready - enhanced */
- #define _KEYBRD_SHIFTSTATUS 2 /* get shift status */
- #define _NKEYBRD_SHIFTSTATUS 0x12 /* get shift status - enhanced */
-
- /* cmd values for _bios_printer() */
-
- #define _PRINTER_WRITE 0 /* send a byte to printer */
- #define _PRINTER_INIT 1 /* initialize printer */
- #define _PRINTER_STATUS 2 /* read printer status */
-
- /* cmd values for _bios_serialcom() */
-
- #define _COM_INIT 0 /* set communication parms to a byte */
- #define _COM_SEND 1 /* send a byte to port */
- #define _COM_RECEIVE 2 /* read character from port */
- #define _COM_STATUS 3 /* get status of port */
-
- /* byte values for _COM_INIT cmd of _bios_serialcom() */
-
- #define _COM_CHR7 0x02 /* 7 data bits */
- #define _COM_CHR8 0x03 /* 8 data bits */
- #define _COM_STOP1 0x00 /* 1 stop bit */
- #define _COM_STOP2 0x04 /* 2 stop bits */
- #define _COM_NOPARITY 0x00 /* no parity */
- #define _COM_EVENPARITY 0x18 /* even parity */
- #define _COM_ODDPARITY 0x08 /* odd parity */
- #define _COM_110 0x00 /* 110 baud */
- #define _COM_150 0x20 /* 150 baud */
- #define _COM_300 0x40 /* 300 baud */
- #define _COM_600 0x60 /* 600 baud */
- #define _COM_1200 0x80 /* 1200 baud */
- #define _COM_2400 0xa0 /* 2400 baud */
- #define _COM_4800 0xc0 /* 4800 baud */
- #define _COM_9600 0xe0 /* 9600 baud */
-
- /* cmd values for _bios_timeofday() */
-
- #define _TIME_GETCLOCK 0 /* get clock count */
- #define _TIME_SETCLOCK 1 /* set clock count */
-
- /* register structure definitions for int86(), int86x() */
-
- #ifndef _REG_DEFS
- #define _REG_DEFS
-
- struct WORDREGS {
- unsigned int ax, bx, cx, dx, si, di, cflag, flags;
- };
-
- struct BYTEREGS {
- unsigned char al, ah, bl, bh, cl, ch, dl, dh;
- };
-
- union REGS {
- struct WORDREGS x;
- struct BYTEREGS h;
- };
-
- struct SREGS {
- unsigned int es;
- unsigned int cs;
- unsigned int ss;
- unsigned int ds;
- };
-
- struct REGPACK {
- unsigned r_ax, r_bx, r_cx, r_dx;
- unsigned r_bp, r_si, r_di, r_ds, r_es, r_flags;
- };
-
- #endif /* _REG_DEFS */
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /* New MSC-compatible BIOS functions.
- */
- unsigned _Cdecl _bios_equiplist(void);
- unsigned _Cdecl _bios_disk(unsigned __cmd, struct diskinfo_t *__dinfo);
- unsigned _Cdecl _bios_keybrd(unsigned __cmd);
- unsigned _Cdecl _bios_memsize(void);
- unsigned _Cdecl _bios_printer(unsigned __cmd, unsigned __port, unsigned __abyte);
- unsigned _Cdecl _bios_serialcom(unsigned __cmd, unsigned __port, unsigned __abyte);
- unsigned _Cdecl _bios_timeofday(unsigned __cmd, long *__timeval);
-
- /* Old-style BIOS functions.
- */
- int _Cdecl bioscom(int __cmd, char __abyte, int __port);
- int _Cdecl biosdisk(int __cmd, int __drive, int __head, int __track,
- int __sector, int __nsects, void *__buffer);
- int _Cdecl biosequip(void);
- int _Cdecl bioskey(int __cmd);
- int _Cdecl biosmemory(void);
- int _Cdecl biosprint(int __cmd, int __abyte, int __port);
- long _Cdecl biostime(int __cmd, long __newtime);
-
- /* Miscellaneous prototypes for MSC compatibility
- */
- int _Cdecl int86(int __intno, union REGS *__inregs, union REGS *__outregs);
- int _Cdecl int86x(int __intno, union REGS *__inregs,
- union REGS *__outregs, struct SREGS *__segregs);
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* __BIOS_H */
-