;Sending message "YES" to HyperTerminal (or TeraTerminal) via Serial 0 COM port on MDE 8051 Trainer
;Tested by Mazidi 
;This is Examples 10-3 from "The 8051 Microcontroller" textbook by Mazidis & McKinlay 
;Download the program by putting the slide SW on PROG 
;After the download is completed, put the slide SW on RUN and Reset the board and you will see the message "YES" will appear on ;screen
;Notice the Serial 0 COM port is the same as the one used to download the program to MDE8051 Trainer
 			
 			ORG	 0
 			MOV	 TMOD,#20H	
			MOV	 TH1,#-3	
			MOV	 SCON,#50H	
			SETB	 TR1		
AGAIN:			MOV	 A,#"Y"	
			ACALL TRANS	
			MOV	 A,#"E"	
			ACALL TRANS	
			MOV	 A,#"S"	
			ACALL TRANS
			SJMP	 AGAIN
;--------------------Data transfer 				
TRANS:			MOV	 SBUF,A	
HERE:			JNB	 TI,HERE	
			CLR	 TI		
			RET
;------------------------ 			
 			END