fossil.c

来自「汇编源代码大全4」· C语言 代码 · 共 74 行

/*--------------------------------------------------------------------*/
/*       f o s s i l . c                                              */
/*                                                                    */
/*       UUPC/extended defines for accessing FOSSIL functions via     */
/*       INT 14 under MS-DOS; also used for other INT14 interfaces.   */
/*--------------------------------------------------------------------*/

/*--------------------------------------------------------------------*/
/*    Changes Copyright (c) 1990-1993 by Kendra Electronic            */
/*    Wonderworks.                                                    */
/*                                                                    */
/*    All rights reserved except those explicitly granted by the      */
/*    UUPC/extended license agreement.                                */
/*--------------------------------------------------------------------*/

/*--------------------------------------------------------------------*/
/*                          RCS Information                           */
/*--------------------------------------------------------------------*/

/*
 *    $Id: FOSSIL.C 1.1 1993/05/30 15:25:50 ahd Exp $
 *
 *    Revision history:
 *    $Log: FOSSIL.C $
 * Revision 1.1  1993/05/30  15:25:50  ahd
 * Initial revision
 *
 * Revision 1.1  1993/05/30  00:16:35  ahd
 * Initial revision
 *
 */


/*--------------------------------------------------------------------*/
/*                        System include files                        */
/*--------------------------------------------------------------------*/

#include <stdio.h>
#include <dos.h>

/*--------------------------------------------------------------------*/
/*                    UUPC/extended include files                     */
/*--------------------------------------------------------------------*/

#include "lib.h"
#include "fossil.h"

/*--------------------------------------------------------------------*/
/*                          Global variables                          */
/*--------------------------------------------------------------------*/

short portNum;        // Must be set by openline()

/*--------------------------------------------------------------------*/
/*       F o s s i l C n t l                                          */
/*                                                                    */
/*       Perform control functions on a FOSSIL port                   */
/*--------------------------------------------------------------------*/

 short FossilCntl( const char function, const char info )
 {
   union REGS regs;

   regs.x.dx = portNum;
   regs.h.ah = function;
   regs.h.al = info;
   regs.x.bx = 0x00;          // Insure start function doesn't
                              // cause ES:CX to be twiddled
   int86( FS_INTERRUPT, &regs, &regs );

   return regs.x.ax;          // Return AX to caller

 } /* FossilCntl */