;Using Full Ascending Load and Store for stack
	AREA     PROG6_2, CODE, READONLY                             
	ENTRY         
	LDR	R13,=Stack_Top	;load SP
	LDR  	R0,=0x125	;R0 = 0x125
	LDR  	R1,=0x144	;R1 = 0x144
	MOV  	R2,#0x56	;R2 = 0x56
	BL	MY_SUB	;call a subroutine
	ADD	R3,R0,R1	;R3 = R0 + R1 = 0x125 + 0x144 = 0x269
	ADD	R3,R3,R2	;R3 = R3 + R2 = 0x269 + 0x56 = 0x2BF
HERE	B	HERE		;stay here
	;---------------------------	
MY_SUB
	;--------save R0, R1, and R2 on stack before they are used by a loop
	STMFA  R13,{R0-R2}	;save R0,R1,R2 on stack using Full Ascending
	;--------R0,R1, and R2 are changed
	MOV  	R0,#0	 	;R0=0
	MOV  	R1,#0	 	;R1=0
	MOV  	R2,#0	 	;R2=0
	;---------restore the original registers contents from stack
	LDMFA	R13,{R0-R2} 	
	;restore R0,R1,and R2 from stack using F. Ascending
	
	BX	LR		;return to caller
	END