Mini-Unix/usr/source/mdec/rp.s

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/ rp03 disk driver

rpda = 176724
	mov	dska,r1
	clr	r0
/	div	$10.,r0
0:
	sub	$10.,r1
	bmi	0f
	inc	r0
	br	0b
0:
	add	$10.,r1
	mov	r1,-(sp)
	mov	r0,r1
	clr	r0
/	div	$20.,r0
0:
	sub	$20.,r1
	bmi	0f
	inc	r0
	br	0b
0:
	add	$20.,r1
	bisb	r1,1(sp)
	mov	$rpda,r1
	mov	(sp)+,(r1)
	mov	r0,-(r1)
	mov	ba,-(r1)
	mov	wc,-(r1)
	mov	$iocom,-(r1)
1:
	tstb	(r1)
	bpl	1b
	rts	pc