pchwio.h

C语言库函数的源代码,是C语言学习参考的好文档。

/* +++Date last modified: 05-Jul-1997 */

/*
**  PCHWIO.H - SNIPPETS header file for portable hardware I/O access under DOS
**
**  public domain by Bob Stout
*/

#ifndef PCHWIO__H
#define PCHWIO__H

#include <dos.h>
#include "extkword.h"


#if defined(__TURBOC__) || defined(__POWERC)
 #ifndef inp
  #define inp           inportb
 #endif
 #ifndef outp
  #define outp          outportb
 #endif
 #ifndef inpw
  #define inpw          inport
 #endif
 #ifndef outpw
  #define outpw         outport
 #endif
#elif defined(__ZTC__)
 #include <int.h>
 #define enable         int_on
 #define disable        int_off
 #if !defined(__SC__)
  void FAR * getvect(unsigned intnum);
  void setvect(unsigned intnum, void (INTERRUPT FAR *handler)());
 #else
  #define getvect       _dos_getvect
  #define setvect       _dos_setvect
 #endif
#else /* assume MSC/QC/WC */
 #include <conio.h>
 #if defined(__WATCOMC__)
  #include <i86.h>
 #endif
 #define enable         _enable
 #define disable        _disable
 #define getvect        _dos_getvect
 #define setvect        _dos_setvect
#endif


#if defined(_MSC_VER) || defined(__WATCOMC__) || \
      defined(__ZTC__) || defined(__SC__)

unsigned char  Peekb(unsigned seg, unsigned ofs);           /* PCHWIO.C */
unsigned short Peekw(unsigned seg, unsigned ofs);           /* PCHWIO.C */
void Pokeb(unsigned seg, unsigned ofs, unsigned char ch);   /* PCHWIO.C */
void Pokew(unsigned seg, unsigned ofs, unsigned short num); /* PCHWIO.C */
 
#elif defined(__TURBOC__)
 #define Peekw peek
 #define Pokew poke
 #define Peekb peekb
 #define Pokeb pokeb
#endif /* peek(), poke() */

#endif /* PCHWIO__H */