Never played with COS. I have one COS DECtape for the
-8/e + TD8E. I
think I booted it 25 years ago and didn't know how to make it do
anything and put it back on the shelf.
Manuals are here. Probably still not that exciting.
http://www.pdp8online.com/pdp8cgi/query_docs/query.pl?Search=cos
I could use that for my DECmate I anyway.
I made a disk using that source and some others. They are in RX02 mode.
http://www.pdp8online.com/images/images/os8/DECmate_I.shtml
I haven't seen any original DECmate I disk images around.