/* *****************************************************************
 *    File Name : AT28HC.D  (Gang is not supported !! )
 *    Pin num   : 24-pin	(A0..A10      D0..D7)
 *    Size	: 16K (7FF)
 *    Vpp	: 12.0		Vcc = 5.0	Dur=1ms (Erase:10ms) 
 *    Last Modify Date : 91. 2. 27 
 *
 *    Device 	: ATMEL  28HC191/L	28HC291/L		
 * ***************************************************************** */
declaration
   dataunit : byte;
   functions
      Program
      Read
      Verify
      Blank_Check
      Data_Compare
   ;
   Manufacturers
      ATMEL
   ;
   Devices
      D28HC191
      D28HC191L
      D28HC291
      D28HC291L
   ;
   chips = A7, A6, A5, A4, A3, A2, A1, A0, D0, D1, D2, GND,
	   D3, D4, D5, D6, D7,CS3_, CS2_, CS1_ , A10, A9, A8, Vcc;
   $v2 = CS1_, CS2_;
   $v3 = Vcc;
endd

/* -----------------------------------------------------------------------
 * Failf () ---> Fail address setting
 * ----------------------------------------------------------------------- */
int Failf (hwhb, hwlb, lwhb, lwlb, tmp)
int hwhb, hwlb, lwhb, lwlb, tmp;
{
int high, low;

   high = (hwhb << 8) | hwlb;
   low  = (lwhb << 8) | lwlb;

   @Fail high, low, tmp;
}
/* -----------------------------------------------------------------------
 * init () ---> Initial processing
 * ----------------------------------------------------------------------- */
int     init (vol2, vol3)
voltage vol2, vol3;
{
   @Vout 2, vol2;            /* Voltage Source #2 */
   @Vout 3, vol3;            /* Voltage Source #3 */
   @Out GND      , @G;       /* Ground output */
   @Delay 10	 , @ms;

   @Out D [0..7] , @W;       /* ------------------------ */
   @Out A [0..7] , @W;       /*                          */
   @Out A [8..10], @W;       /*   Initial Direction      */
   @Out CS1_     , @W;       /*         Of               */
   @Out CS2_     , @W;       /* ------------------------ */
   @Out CS3_	 , @W;	
   @Out Vcc	 , @W;
   
   @Out Vcc	 , @L;
   @Out Vcc	 , @O;       /* Vcc Enable */
   @Delay 100	 , @us;
}
/* -----------------------------------------------------------------------
 * InitProcess () ---> Initial Buffer | Voltage source
 * ----------------------------------------------------------------------- */
int InitProcess ()
{
   if (FUNCTION != Program) init ( 5.0 , 5.0 );
   else                     init (12.0,  5.0);
}
/* -----------------------------------------------------------------------
 * read () ---> read processing
 * ----------------------------------------------------------------------- */
int read (row)
int	row;
{
int  hwhb, hwlb, lwhb, lwlb;	
int  sll, ell, slh, elh;
int  tmp, tmp2;

   lwlb = lwhb = hwhb = hwlb = 0;
   sll = ell = slh = elh = tmp =tmp2 = 0;
   
   @Set B_HADDR, B_LADDR;
   @Inc	__B_START__;
   
   @Out D [0..7], @Z;	/* Data Input  */
   @Out CS1_, @H;
   @Out CS2_, @L;
   @Out CS3_, @L;
   
   if (FUNCTION == Read ) 
   {
      @Display 26, row, "Reading...";
      @CheckSumON;
   }
   else if (FUNCTION == Verify)		@Display 26, row, "Verifying...";
   else if (FUNCTION == Blank_Check)	@Display 26, row, "Blank Checking...";
   else 			        @Display 26, row, "Data Comparing...";   

   for ( hwhb=0 /* S_HWHB */ ; hwhb<=0 /* E_HWHB */; hwhb++ )
   {
      @Display 64, 9, hwhb;
      for ( hwlb=0 /* S_HWLB */; hwlb<=0 /* E_HWLB */; hwlb++ )
      {
	 @Display 66, 9, hwlb;
	 if (hwlb == S_HWLB) slh = S_LWHB;
         else                slh = 0;
         if (hwlb == E_HWLB) elh = E_LWHB;
         else                elh = 0xFF;

	 for ( lwhb=slh; lwhb<=elh; lwhb++)
         {
	    @Display 68, 9, lwhb;
	    @Out A [8..10], lwhb;   /* Output High word address */
	    
	    if (lwhb == S_LWHB) sll = S_LWLB;
            else                sll = 0;
            if (lwhb == E_LWHB) ell = E_LWLB;
            else                ell = 0xFF;

	    for ( lwlb=sll; lwlb<=ell; lwlb++)
	    {
	       @Out A [0..7], lwlb;    /* Low  byte address output */
	       @Out CS1_      , @L;
	       @Out CS2_      , @H;
	       @Out CS3_      , @H;	
	       
	       @In  D [0..7], tmp;
	       @Out CS1_    , @H;
	       @Out CS2_    , @L;
	       @Out CS3_    , @L;

	       if      (FUNCTION == Read)          @Load tmp;
	       else if (FUNCTION == Blank_Check)   /* Blank_Char */
	       {
		    if (tmp != 0xFF)	Failf(hwhb, hwlb, lwhb, lwlb, tmp);
	       }
	       else if (FUNCTION == Verify)
	       {
		   @Store tmp2;
		   if (tmp != tmp2)  Failf (hwhb, hwlb, lwhb, lwlb, tmp);
	       }
	       else if (FUNCTION == Data_Compare) 	   
	       {
	       	    @Store	tmp2;
	       	    @Compare	tmp, tmp2;
	       }
	       @Inc SPLIT;
            }
	 }
      }
   }
   if 	   (FUNCTION == Read)		@Display 26, row, "Read OK!   ";
   else if (FUNCTION == Verify)		@Display 26, row, "Verification OK!";
   else if (FUNCTION == Blank_Check)	@Display 26, row, "Blank Check OK!  ";
   else 			        @Display 26, row, "Data Comparison OK!";
}
/* -----------------------------------------------------------------------
 *  program() ---> Control main
 * ----------------------------------------------------------------------- */
int	program ()
{
int  hwhb, hwlb, lwhb, lwlb;
int  sll, ell, slh, elh;
int  tmp , tmp2, failcnt;

   @Set  B_HADDR, B_LADDR;
   @Inc  __B_START__;
   
   failcnt = lwlb = lwhb = hwhb = hwlb = 0;
   sll = ell = slh = elh = tmp = tmp2 = 0;
	
   @Display 26, 6, "Programming...";   
/*----------------  Chip Erase  ----------------------- */
   @Out CS1_	  , @H;
   @Out CS3_	  , @H;
   @Out CS2_	  , @H;
   
   @Out CS2_	  , @O;                    	
   @Out CS1_	  , @L;
   
   @Out CS3_	  , @L;   
   @Delay  10	  , @ms;
   @Out CS3_	  , @H;
   
   @Out CS1_	  , @H;
   @Out CS2_	  , @F;
   @Out CS2_	  , @H;
   
   @Out CS2_  , @L;	
   @Out CS3_  , @H;   

   for ( hwhb=0 /* S_HWHB */; hwhb<=0 /* E_HWHB */; hwhb++ )
   {
       @Display 64, 9, hwhb;

       for ( hwlb=0 /* S_HWLB */; hwlb<=0 /* E_HWLB */; hwlb++ )
       {
	   @Display 66, 9, hwlb;
	   if (hwlb == S_HWLB) slh = S_LWHB;
           else                slh = 0;
           if (hwlb == E_HWLB) elh = E_LWHB;
           else                elh = 0xFF;

	   for ( lwhb=slh; lwhb<=elh; lwhb++)
	   {
	       @Display 68, 9, lwhb;
	       @Out A [8..10], lwhb;   /* Output High word address */
	       if (lwhb == S_LWHB) sll = S_LWLB;
               else                sll = 0;
               if (lwhb == E_LWHB) ell = E_LWLB;
               else                ell = 0xFF;

	       for ( lwlb=sll; lwlb<=ell; lwlb++)
	       {
		  @Store tmp;

		  if (tmp == 0xFF)
		  {
		     @Inc SPLIT;
		     continue;
		  }
		  
	          @Out CS1_    , @O; 		                                   	
	          @Out A [0..7], lwlb;
	          @Out CS3_    , @L;
		  @Out D [0..7], tmp;
		  @Out CS3_    , @H;
		  @Delay 1     , @ms;
		  
		  /* -------- Verify ----------- */
	          @Out D [0..7], @Z;
		  @Out CS2_    , @H;
	          @Out CS1_    , @F;		  
	          @Out CS1_    , @L;
	          @In  D [0..7], tmp2;
		  @Out CS2_    , @L;
		  @Out D [0..7] , @W;
		  @Out CS1_    , @H;

		  if (tmp != tmp2)
                  {
		     if (failcnt > 25) Failf (hwhb, hwlb, lwhb, lwlb, tmp2);
		     else
		     {
			++ failcnt;
			lwlb--;
		     }
                  }
		  else
		  {
			failcnt = 0;
			@Inc SPLIT;
		  }
               }
           }
       }
   }
   @Display 26, 6, "Program OK!   ";
   FUNCTION = Verify;
   read (6);		/*  Verify  */
}   
/* -----------------------------------------------------------------------
 * main () ---> Control main
 * ----------------------------------------------------------------------- */
int main ()
{
   InitProcess();

   if ( FUNCTION == Program ) 	program();
   else 			read (6);
}
/* ---------------------------- End of program --------------------------- */