Subject: RK06/7 boot block bug (+fix)
Index:	sys/mdec/hkuboot.s 2.11BSD

Description:
	The RK06/7 boot block enters an endless loop on the first I/O
	request.

Repeat-By:
	Either attempt to boot a RK06/7 disc (sorry 'bout that Paul) or
	by inspection of the code.

Fix:
	Apply the patch below.  There was a 1 character typo, the wrong
	register was being used in the test for i/o completion.

_----------------------------------------------------------------------
*** hkuboot.s.old	Wed Apr 24 13:08:11 1991
--- hkuboot.s	Thu Dec 12 15:52:05 1991
***************
*** 249,255 ****
  	mov	$WC,-(r3)	/ word count
  	mov	$iocom,-(r3)
  1:
! 	tstb	(r1)
  	bge	1b		/ wait for iocom to complete
  	mov	(sp)+,r1
  	rts	pc
--- 249,255 ----
  	mov	$WC,-(r3)	/ word count
  	mov	$iocom,-(r3)
  1:
! 	tstb	(r3)
  	bge	1b		/ wait for iocom to complete
  	mov	(sp)+,r1
  	rts	pc