hdlc.c

hdlc_receive_code.rar

/////////////////////////////////////////////////
////If you have any question about this testbench
////please get in touch with me:  [e-mail]
////
////
////
///////////////////////////////////////////////////


//#include "/tools2/synopsys/vcs7.0/include/vcsuser.h"
#include "/jeepHome/gul/practice/vcs/vcsuser.h"
#include <stdio.h>
#include <stdlib.h>

static unsigned char byteout_inv;
static int onecount;
static int bitinsert;
static int TXD[10];
static int TXDS[10];

hello()
{ io_printf("************************\n"); 
  io_printf("\ttest begin\n");
  io_printf("************************\n"); }

flag()
{
  static int i=0;
  static unsigned char flagout=0x7E;
  onecount=0;
  bitinsert=0;
  tf_putp(1,flagout%2); 
  flagout>>=1; 
  i++;
  if(i==8) { i=0; flagout=0x7E; }	    
}

fix()
{ int isfix;
  unsigned char bytedate,byteout;
  int bytekind;
  int invnum;
  static int in_k;
  isfix=tf_getp(1);
  bytedate=tf_getp(2);
  bytekind=tf_getp(3);
  byteout=isfix?bytedate:(unsigned char)(rand()%256);
  if(bytekind!=7)
    {
      TXD[in_k]=byteout; TXDS[in_k]=bytekind;
      if(in_k<9) 
         in_k++;
      else
	 in_k=0; 
    }
  byteout_inv=0;
  for(invnum=0;invnum<8;invnum++)
    { byteout_inv<<=1; byteout_inv+=byteout%2; byteout>>=1; }
}

byte()
{ 
  tf_putp(1,byteout_inv%2);
  if(byteout_inv%2) onecount++;
  else onecount=0;
  byteout_inv>>=1;
  if(onecount==5)
     { onecount=0; bitinsert=1; }
  else
     bitinsert=0;  
}

stuff()
{
  tf_putp(1,bitinsert);
  bitinsert=0;  
}

readresult()
{ 
  static int out_k;
  tf_putp(1,TXD[out_k]);
  tf_putp(2,TXDS[out_k]);
  if(out_k<9)
     out_k++;
  else
     out_k=0;
}

seed()
{ 
  int seednum;
  seednum=tf_getp(1);
  srand(seednum);
}