.mcall	MRKT$S,WTSE$S
DspReg=177524
START:
	MOV	#77,R0
10$:	MOVB	R0,@#DspReg
	MRKT$S	#1,#25,#1
	WTSE$S	#1
	SOB	R0,10$
	BR	Start
	.END START