Hi Noel,

may I draw your attention to
	http://www.tuhs.org/Archive/Distributions/Research/Bug_Fixes/V6enb/ ?

There you'll find some modification to Unix V6. They are distributed as what I call .enb. This suffix stands for “enblocked”. Enblocking means marking blocks on a tape file suitable for simh. You’ll find more about V6 and the modifications at
	http://doc.cat-v.org/unix/v6/operating-systems-lecture-notes/

Greetings,

Wolfgang Helbig
Stauferstr. 22

71334 Waiblingen