xram_fct.c

来自「T89C51CC01 uart BOOTLOAD」· C语言 代码 · 共 50 行

/*C**************************************************************************
* NAME: xram_fct  
*----------------------------------------------------------------------------
* CREATED_BY:    Jean-Sebastien BERTHY
* CREATION_DATE: 2/10/2000 
* AUTHOR:        $Author: jberthy $
* REVISION       $Revision: 1.1 $
* DATE:          $Date: 2001/03/24 13:28:38 $
*----------------------------------------------------------------------------
* PURPOSE: 
*
*****************************************************************************/

/*_____ I N C L U D E S ____________________________________________________*/
#include "compiler.h"
/*_____ M A C R O S ________________________________________________________*/

/*_____ D E F I N I T I O N ________________________________________________*/


/*_____ D E C L A R A T I O N ______________________________________________*/


/*F**************************************************************************
* NAME: xram_wr 
*----------------------------------------------------------------------------
*----------------------------------------------------------------------------
* PURPOSE: 
*****************************************************************************/
void xram_wr(Uchar xdata *addr, Uchar val)
{
  *addr = val;          /* addr is a pointer to external data mem */
}

/*F**************************************************************************
* NAME: xram_rd 
*----------------------------------------------------------------------------
* PARAMS:  
*----------------------------------------------------------------------------
* PURPOSE: 
*****************************************************************************/
Uchar xram_rd(Uchar xdata *addr)
{  
  return *addr;  
}