Sets the 8 switches in the UPSI (User Program Switch Indicator) byte. 
	 
 
	 Syntax:
 
		 
		      *---------------------------------------------------------------
      * UPSI OPERANDS
      *    //  UPSI xxxxxxxx
      *------------------------------------------------------------------
 
	  
 
	  
		Where: 
		
 
		 
		   
			 - xxxxxxxx 
			 
 
 
			 - 1 to 8 characters corresponding to the bit switches. Valid values for each character are: 
				
 
				   
					 - 0 
					 
 
 
					 - Set switch to off. 
					 
 
 
				   
				   
					 - 1 
					 
 
 
					 - Set switch to on.
					 
 
 
				   
				   
					 - X 
					 
 
 
					 - Leave unchanged.