bios98.mh

来自「开放源码的编译器open watcom 1.6.0版的源代码」· MH 代码 · 共 189 行

/*
 *  bios98.h    NEC BIOS functions
 *
:include crwat.sp
 */
#ifndef _BIOS_H_INCLUDED
#define _BIOS_H_INCLUDED
:include readonly.sp
:include cpluspro.sp

#ifndef _COMDEF_H_INCLUDED
 #include <_comdef.h>
#endif

:include pshpackl.sp

struct  _nec98_diskinfo_t {     /* disk parameters */
        unsigned command;
        unsigned drive;         /* drive number    */
        unsigned head;          /* head number     */
        unsigned cylinder;
        unsigned data_len;
        unsigned sector_len;
        unsigned sector;        /* sector number   */
        unsigned nsectors;      /* number of sectors to read/write/compare  */
        void _WCI86FAR *buffer; /* buffer to read to,write from, or compare */
        void _WCI86FAR *result;
};
#define _diskinfo_t     _nec98_diskinfo

:include ext.sp
#define diskinfo_t      _nec98_diskinfo_t
#endif

/* constants for BIOS disk access functions */
/* disk services */
#define _DISK_VERIFY            0x01    /* verify disk sector */
#define _DISK_DIAGNOSTIC        0x02    /* read diagnostic */
#define _DISK_INITIALIZE        0x03    /* initialize */
#define _DISK_SENSE             0x04    /* sense disk sector */
#define _DISK_WRITE             0x05    /* disk write */
#define _DISK_READ              0x06    /* disk read */
#define _DISK_RECALIBRATE       0x07    /* recalibrate */
#define _DISK_ALTERNATE         0x08    /* assign alternate track */
#define _DISK_WRITEDDAM         0x09    /* write deleted data */
#define _DISK_READID            0x0A    /* read ID */
#define _DISK_BADTRACK          0x0B    /* format bad track */
#define _DISK_READDDAM          0x0C    /* read deleted data */
#define _DISK_FORMATTRACK       0x0D    /* format track */
#define _DISK_OPMODE            0x0E    /* set operation mode */
#define _DISK_RETRACT           0x0F    /* retract */
#define _DISK_SEEK              0x10    /* seek disk sector */
#define _DISK_FORMATDRIVE       0x8D    /* format drive */

#define _CMD_2HD                0x0090  /* 1MB flopy disk */
#define _CMD_2DD                0x0070  /* 640KB flopy disk */
#define _CMD_2D                 0x0050  /* 320KB flopy disk */
#define _CMD_HD                 0x0080  /* hard disk */

#define _CMD_SEEK               0x1000  /* seek operation */
#define _CMD_MF                 0x4000  /* double-density / single-density */
#define _CMD_MT                 0x8000  /* multi track / single track */
#define _CMD_RETRY              0x2000  /* retry operation */

/* constants for BIOS serial communications (RS-232) support */

/* serial port services */

#define _COM_INIT       0x00    /* init serial port */
#define _COM_INITX      0x01    /* init serial port (with X parameter) */
#define _COM_GETDTL     0x02    /* get data length */
#define _COM_SEND       0x03    /* send character */
#define _COM_RECEIVE    0x04    /* receive character */
#define _COM_COMMAND    0x05    /* get command status */
#define _COM_STATUS     0x06    /* get serial port status */

/* select port */

#define _COM_CH1                0x01    /* default port */
#define _COM_CH2                0x02    /* expansion board's port */
#define _COM_CH3                0x03    /* expansion board's port */

/* serial port initializers.  One and only one constant from each of the
 * following four groups - character size, stop bit, parity, and baud rate -
 * must be specified in the initialization byte.
 */

/* character size initializers */

#define _COM_CHR7               0x08    /* 7 bits characters */
#define _COM_CHR8               0x0C    /* 8 bits characters */

/* stop bit values - on or off */

#define _COM_STOP1              0x40    /* 1 stop bit */
#define _COM_STOP2              0xC0    /* 2 stop bit */

/*  parity initializers */

#define _COM_NOPARITY   0       /* no parity */
#define _COM_ODDPARITY  0x10    /* odd parity */
#define _COM_ODD        _COM_ODDPARITY  /* odd parity */
#define _COM_EVENPARITY 0x30    /* even parity */
#define _COM_EVEN       _COM_EVENPARITY /* even parity */

/*  baud rate initializers */

#define _COM_DEFAULT            0xFF    /* default baud */
#define _COM_75                 0x00    /* 75 baud */
#define _COM_150                0x01    /* 150 baud */
#define _COM_300                0x02    /* 300 baud */
#define _COM_600                0x03    /* 600 baud */
#define _COM_1200               0x04    /* 1200 baud */
#define _COM_2400               0x05    /* 2400 baud */
#define _COM_4800               0x06    /* 4800 baud */
#define _COM_9600               0x07    /* 9600 baud */

/* command */

#define _COM_TXEN               0x01    /* transmission enable */
#define _COM_DTR                0x02    /* data terminal ready */
#define _COM_RXEN               0x04    /* enable to receive */
#define _COM_SBRK               0x08    /* send brake character */
#define _COM_ER                 0x10    /* error reset */
#define _COM_RTS                0x20    /* request to send */
#define _COM_IR                 0x40    /* internal reset */

struct com_t {
        unsigned short baud;
        unsigned short mode;
        unsigned short command;
        unsigned short tx_time;
        unsigned short rx_time;
        unsigned short size;
        void _WCI86FAR *buffer;
};

/* keyboard services */

#define _KEYBRD_READ        0   /* read next character from keyboard */
#define _KEYBRD_READY       1   /* check for keystroke */
#define _KEYBRD_SHIFTSTATUS 2   /* get current shift key status */
#define _KEYBRD_INITIALIZE  3   /* init keyboard interface */
#define _KEYBRD_SENSE       4   /* sense key input status */

/* printer services */

#define _PRINTER_WRITE        0x11      /* write character to printer */
#define _PRINTER_INIT         0x10      /* initialize printer */
#define _PRINTER_STATUS       0x12      /* get printer status */
#define _PRINTER_WRITE_STRING 0x30      /* write string to printer */
/* MS-C compatible */
#define _PRN_INIT       _PRINTER_INIT   /* initialize printer */
#define _PRN_WRITE      _PRINTER_WRITE  /* write character to printer */
#define _PRN_STRING     0x30            /* write strings to printer */
#define _PRN_STATUS     _PRINTER_STATUS /* get printer status */

/* time-of-day services */

#define _TIME_GETCLOCK  0       /* get current clock count */
#define _TIME_SETCLOCK  1       /* set current clock count */


/* When BIOS98.H is included, map BIOS calls to NEC98 routines */
#define _bios_disk              __nec98_bios_disk
#define _bios_equiplist         __nec98_bios_equiplist
#define _bios_keybrd            __nec98_bios_keybrd
#define _bios_memsize           __nec98_bios_memsize
#define _bios_printer           __nec98_bios_printer
#define _bios_serialcom         __nec98_bios_serialcom
#define _bios_timeofday         __nec98_bios_timeofday


_WCRTLINK extern unsigned short _bios_disk(unsigned __cmd,
                                           struct diskinfo_t *__diskinfo);
_WCRTLINK extern unsigned short _bios_equiplist(void);
_WCRTLINK extern unsigned short _bios_keybrd(unsigned,unsigned char *);
_WCRTLINK extern unsigned short _bios_memsize(void);
_WCRTLINK extern unsigned short _bios_printer(unsigned __cmd,
                                              unsigned char *_data);
_WCRTLINK extern unsigned short _bios_serialcom(unsigned __cmd,unsigned __port,
                                                struct com_t *__data);
_WCRTLINK extern unsigned short _bios_timeofday(unsigned __cmd,char *__timeval);


:include poppack.sp
:include cplusepi.sp
#endif