> On Mar 5, 2017, at 09:49, Chuck Guzis via cctalk <cctalk@classiccmp.org> > wrote: > > I don't recall many who used those yellow rings for their intended > purpose. It was just too easy to forget to remove one. You mounted > tapes without and reached around the back of the reel with a punch card > and tripped the "finger" that detected the ring.
So, was the write enable state latched at some point in the loading cycle on those drives? That surprises me, because I would have expected the write enable sensor to interrupt write current as combinatorial function on the drive, and/or pass sensor status up to the formatter a combinatorial signal. -- Mark J. Blair, NF6X <n...@nf6x.net> http://www.nf6x.net/
