/* ****************************************************************************
 *    File Name 	: 2865.D  (EEPROM : Electrical Eraser PROM)
 *    Pin num		: 28-pin	(A0..A12	D0..D7)
 *    Memory Size      	: 64K	(1FFF)
 *    Last Modify Date 	: 91. 3. 5 
 *
 *    Device 	: EXEL		2865         	
 *		  FUJITSU	28C65 (Vpp=13.5)
 *		  HITACHI	58C65
 *    Vcc	: 5.0		Vpp : 15.0	
 *    Duration	: 10ms
 * ************************************************************************** */
declaration
   dataunit : byte;
   functions
      Program
      Read
      Verify
      Blank_Check
      Data_Compare      
   ;
   Manufacturers
      EXEL
      FUJITSU
      HITACHI
   ;
   Devices
      D2865	
      D28C65
      D58C65
   ;      
   chips = RDY, A12, A7, A6, A5, A4, A3, A2, A1, A0, D0, D1, D2, GND,
	   D3, D4, D5, D6, D7, CE, A10, OE, A11, A9, A8, NC, WE, Vcc;
   $v2 = OE;	   
   $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 ( vol3 )
voltage  vol3;
{
   @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..12], @W;       /*   Initial Direction      */
   @Out CE       , @W;       /*         Of               */
   @Out WE	 , @W;	     /*        Port		 */
   @Out OE       , @W;       /* ------------------------ */
   @Out RDY	 , @W;
   @Out Vcc	 , @W;
   @Out __GANG__[0..3], @W;

   @Out CE       , @H;       /* Chip enable  is High */
   @Out OE       , @H;       /* Out  enable  is High */
   @Out WE	 , @H;
   @Out RDY	 , @H;
   @Out __GANG__[0..3], @H;
   
   @Out Vcc      , @O;       /* Vcc Enable */
   @Delay 100	 , @us;
}
/* -----------------------------------------------------------------------
 * InitProcess () ---> Initial Buffer | Voltage source
 * ----------------------------------------------------------------------- */
int InitProcess ()
{
   init ( 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 RDY	, @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..12], 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 */
	       
	       if (GANG == 0)	@Out CE            , @L;
	       else		@Out __GANG__[GANG], @L;
	       
	       @Out OE      , @L;

	       @In  D [0..7], tmp;
	       
	       if (GANG == 0)	@Out CE	    	   , @H;
	       else		@Out __GANG__[GANG], @H;
	       
	       @Out OE	    , @H;

	       if (FUNCTION == Read)          @Load tmp;
	       else if (FUNCTION == Blank_Check)
	       {
		  if (tmp != 0xFF /* Blank Char  */)
		     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;
	       }
	       if ( FUNCTION != Blank_Check )	@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, Dur;

   @Set  B_HADDR, B_LADDR;
   @Inc  __B_START__;
   
   failcnt = lwlb = lwhb = hwhb = hwlb = 0;
   sll = ell = slh = elh = Dur = tmp = tmp2 = 0;
	
   @Display 26, 6, "Programming...";      
   
/* --------------- Erase Chip ------------------------- 
   if (MFG == EXEL)	@Vout 2	, 15.0;
   else			@Vout 2 , 13.5;
   
   @Out OE	, @O;
   
   if (GANG == 0)	@Out CE		   , @L;
   else			@Out __GANG__[GANG], @L;
   
   @Out WE	, @L;
   @Delay 10	, @ms;
   @Out WE	, @H;
   
   if (GANG == 0)	@Out CE	   	   , @H;
   else			@Out __GANG__[GANG], @H;
   
   @Out OE	, @F;
*/   
   @Out OE	, @L;   

   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..12], 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;

	          @Out A [0..7], lwlb;
	          @Out OE      , @H;
	          @Out WE      , @L;
	          if (GANG == 0)	@Out CE            , @L;
	          else			@Out __GANG__[GANG], @L;
	          @Out RDY     , @L;
	          
	          @Out D [0..7], tmp;
	          
		  if (GANG == 0)	@Out CE      	   , @H;
		  else			@Out __GANG__[GANG], @H;
		  
		  @Out WE      , @H;
		  @Out OE      , @L;
		  @Out WE      , @L;
		  @Out RDY     , @H;
		  
		  @Delay  10 , @ms;
		  
		  /* ----------- Verify --------------- */
		  @Out D [0..7]	, @Z;
		  @Out WE	, @H;
		  @Out OE	, @L;
		  
		  if (GANG == 0)	@Out CE		   , @L;
		  else			@Out __GANG__[GANG], @L;
		  
		  @In D [0..7]	, tmp;
		  @Out OE	, @H;
		  
		  if (GANG == 0)	@Out CE		   , @H;
		  else			@Out __GANG__[GANG], @H;
		  
		  @Out D [0..7]	, @W;
		  
		  @Inc	SPLIT; 		  
               }
	   }
       }
   }
   @Display 26, 6, "Program OK!   ";
   FUNCTION = Verify;
   read (7);		/*  Verify  */
}

/* -----------------------------------------------------------------------
 * main () ---> Control main
 * ----------------------------------------------------------------------- */
int main ()
{
   InitProcess();

   if ( FUNCTION == Program ) program();
   else if ( FUNCTION == Read )
   {
   	if 	(GANG >= 1 && __B_START__ == 0);
   	else if (GANG == 3 && __B_START__ == 1);
   	else read (6);
   }    
   else 		      read (6);
}
/* ---------------------------- End of program --------------------------- */