getkey.c

上课老师给的8086仿真器

/*
 *  This file is part of the C-51 Compiler package
 *  Copyright (c) KEIL ELEKTRONIK GmbH and Franklin Software Inc. 1993
 *
 *  PUTCHAR.C:  This routine is the general character input of C-51.
 *
 *  To compile this file use C51 with the following invocation:
 *
 *     C51 GETKEY.C
 *
 *  To link the modified GETKEY.OBJ file to your application use the
 *  following L51 invocation:
 *
 *     L51 <your object file list>, GETKEY.OBJ <controls>
 *
*/

#include <reg51.h>

char _getkey ()  {
  char c;

  while (!RI);
  c = SBUF;
  RI = 0;
  return (c);
}